sci.electronics.repair - 22 new messages in 15 topics - digest

sci.electronics.repair
http://groups.google.com/group/sci.electronics.repair?hl=en

sci.electronics.repair@googlegroups.com

Today's topics:

* OT White Pages - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/9dd61fa3e34d1cda?hl=en
* Confusing output voltage from transformer - 6 messages, 5 authors
http://groups.google.com/group/sci.electronics.repair/t/127abce726bc4e16?hl=en
* Boss TU-120 Electronic Tuner Schematic Roland LED Strobe Guitar Tuning - 1
messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/9beb1a7b35ce5c6e?hl=en
* Fairchiled KA5L0165R source? - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/90610bd811debae9?hl=en
* Sitre Magana was caught beating off at the Post Office - 1 messages, 1
author
http://groups.google.com/group/sci.electronics.repair/t/93e213db5243c205?hl=en
* Connector from a computer USB connection to a ribbon cable and a HD - 1
messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/877f53f3dc7269f3?hl=en
* Proof that Sitre Magana is really gay..... - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/2f087253676054f1?hl=en
* But one thing is for sure, you will be serious about your feelings and sheer
de - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/d4114ae5616ecd0c?hl=en
* Panasonic Inverter Microwave Oven Schematic request - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/6b00e79030ce1836?hl=en
* reparing battery pack - 3 messages, 3 authors
http://groups.google.com/group/sci.electronics.repair/t/0d9491f5db686f53?hl=en
* Fender SPL 9000 , 1997 slave amp - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/e8c4224393658fe1?hl=en
* marlboro guitar amp - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/fcc95e7f4b10829b?hl=en
* Looking For Usable Multimeter - Cheap - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/e1a0542b17d8b08d?hl=en
* Help - UPS not charging - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/2f1fedcfd7a3b652?hl=en
* 24V Lead Acid Battery Charger Control Module PCB Recommendations - 1
messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/79ff67912b0400b9?hl=en

==============================================================================
TOPIC: OT White Pages
http://groups.google.com/group/sci.electronics.repair/t/9dd61fa3e34d1cda?hl=en
==============================================================================

== 1 of 1 ==
Date: Fri, Mar 4 2011 4:35 pm
From: catpandaddy


mm wrote:
> OT
>
> The phone books have been getting smaller. With the yellow pages, I
> figure most places are still in business but they have moved their
> advertising elsewhere.
>
> But with the white pages, I'm not so sure. The new book is 1/3
> smaller than the book 1 or 2 years ago. If they've just made their
> numbers unpublished, I want to keep the book so I will still have
> their numbers. But if they've abandoned their wired phones for cell
> phones, there is no point to keeping the book.
>
> Why is the White Pages 1/3 shorter than it was? How much is
> unpublished and how much is just gone?
>
> Thank you.
>

There are other ways of finding somebody other than the fone book. For
example, if you want to get in touch with Sitre Magana, you don't need a
fone book, just go to the Post Office and look for the fat ass in the
wheelchair who is pounding his pud while staring at an ugly chick in
front of him who he thinks is his girlfriend Dori.

==============================================================================
TOPIC: Confusing output voltage from transformer
http://groups.google.com/group/sci.electronics.repair/t/127abce726bc4e16?hl=en
==============================================================================

== 1 of 6 ==
Date: Sat, Mar 5 2011 4:18 am
From: "john reves"


I have a very small sony amplifier (the portable type such as you would
travel with and attach to an Ipod). I dont have the 9 Volt DC transformer
that came with it, so decided to use one of those 'variable voltage'
transformers that I bought from Lidl some time ago.

It's not clear from the transformer which of the polaritys the polarity
switch is indicating. So to check the polarity i used a voltmeter.

The choice of output voltages on this transformer is 3, 4.5, 6, 7.5, 9, and
12 volts. The output I require for this particular amplifier is 9 volts.
But when taking a reading from the voltmeter it only reads 7.5 volts on the
9 volt setting.

Checking the others, 3volts is really 2.5volts, 4.5 is really 4, 6 is 5, 7.5
is 6.5 and 12 is 10v.

I read somewhere that a voltage reading from a voltmeter is different from
the reading taken when something is 'under- load'.

Would you use the 9 volt setting (which reads 7.5v) or use the 12v voltage
setting which reads 10volt, for use with this 9volt amplifier. Thanks for
advice.


== 2 of 6 ==
Date: Sat, Mar 5 2011 4:47 am
From: Skipweasel


In article <ikt9nt$aqv$1@news.eternal-september.org>, bluestar09555
@mail.invalid says...
> Would you use the 9 volt setting (which reads 7.5v) or use the 12v voltage
> setting which reads 10volt, for use with this 9volt amplifier. Thanks for
> advice.
>

Try the lower - if that leads to distorted sound, use the higher.
There's very little chance of damaging it on the higher, and nil on the
lower.

--
Skipweasel - never knowingly understood.


== 3 of 6 ==
Date: Sat, Mar 5 2011 6:20 am
From: John Rumm


On 05/03/2011 12:18, john reves wrote:
> I have a very small sony amplifier (the portable type such as you would
> travel with and attach to an Ipod). I dont have the 9 Volt DC transformer
> that came with it, so decided to use one of those 'variable voltage'
> transformers that I bought from Lidl some time ago.

Is the transformer a very light weight unit?

If so it might be one of the ever more common switched mode types.

> It's not clear from the transformer which of the polaritys the polarity
> switch is indicating. So to check the polarity i used a voltmeter.
>
> The choice of output voltages on this transformer is 3, 4.5, 6, 7.5, 9, and
> 12 volts. The output I require for this particular amplifier is 9 volts.
> But when taking a reading from the voltmeter it only reads 7.5 volts on the
> 9 volt setting.
>
> Checking the others, 3volts is really 2.5volts, 4.5 is really 4, 6 is 5, 7.5
> is 6.5 and 12 is 10v.
>
> I read somewhere that a voltage reading from a voltmeter is different from
> the reading taken when something is 'under- load'.

This can be true of many PSUs. In the case of the older "linear"
designs of PSU, the voltage would often rise well beyond the nominal
setting when unloaded. With modern switching supplies the voltage can be
very low (or the PSU even turn off) if there is no load.

However it is also possible that you have a regulated supply that is
supposed to give the marked voltage under all conditions, but it has
just been poorly calibrated.

> Would you use the 9 volt setting (which reads 7.5v) or use the 12v voltage
> setting which reads 10volt, for use with this 9volt amplifier. Thanks for
> advice.

Start lower and work up.

--
Cheers,

John.

/=================================================================\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\=================================================================/


== 4 of 6 ==
Date: Sat, Mar 5 2011 6:21 am
From: Scott M


john reves wrote:

> I read somewhere that a voltage reading from a voltmeter is different from
> the reading taken when something is 'under- load'.

With an unregulated, low current power supply you will find the voltage
sags as the current draw increases. And, normally, with these cheapy
wall-warts the actual voltage is *higher* than labelled as a) they're
cheap and innacurate and b) they expect the voltage to sag down towards
the indicated value. I've not come across any before where the voltage
starts off lower but it falls in with a) above.


> Would you use the 9 volt setting (which reads 7.5v) or use the 12v voltage
> setting which reads 10volt, for use with this 9volt amplifier. Thanks for
> advice.

Like as not 10v will be fine (but as said, 7.5 is a safe starting
point.) It's rare for any device to require an exact voltage unless it
uses 5v TTL ICs and doesn't have any sort of on board regulator.

--
Scott

Where are we going and why am I in this handbasket?


== 5 of 6 ==
Date: Sat, Mar 5 2011 8:29 am
From: Skipweasel


In article <iktgt6$o2i$1@speranza.aioe.org>, no_one@no_where.net says...
> Like as not 10v will be fine (but as said, 7.5 is a safe starting
> point.) It's rare for any device to require an exact voltage unless it
> uses 5v TTL ICs and doesn't have any sort of on board regulator.
>

Much 74LS series is OK up to around 7V. Most data sheets say 5.5V, but a
few actually admit to more - but experience suggests that above 7V
you're /really/ pushing your luck.

--
Skipweasel - never knowingly understood.


== 6 of 6 ==
Date: Sat, Mar 5 2011 2:42 pm
From: "Gareth Magennis"


"john reves" <bluestar09555@mail.invalid> wrote in message
news:ikt9nt$aqv$1@news.eternal-september.org...
> I have a very small sony amplifier (the portable type such as you would
> travel with and attach to an Ipod). I dont have the 9 Volt DC transformer
> that came with it, so decided to use one of those 'variable voltage'
> transformers that I bought from Lidl some time ago.
>
> It's not clear from the transformer which of the polaritys the polarity
> switch is indicating. So to check the polarity i used a voltmeter.
>
> The choice of output voltages on this transformer is 3, 4.5, 6, 7.5, 9,
> and 12 volts. The output I require for this particular amplifier is 9
> volts. But when taking a reading from the voltmeter it only reads 7.5
> volts on the 9 volt setting.
>
> Checking the others, 3volts is really 2.5volts, 4.5 is really 4, 6 is 5,
> 7.5 is 6.5 and 12 is 10v.
>
> I read somewhere that a voltage reading from a voltmeter is different from
> the reading taken when something is 'under- load'.
>
> Would you use the 9 volt setting (which reads 7.5v) or use the 12v voltage
> setting which reads 10volt, for use with this 9volt amplifier. Thanks for
> advice.
>

Well if your voltmeter isn't broken, the power supply certainly is, it is
miles away from what it should be.
Setting it to a higher voltage may well be fine for a while, until whatever
is causing the drop suddenly falls off and you get full voltage to your Ipod
and fry it.

Why risk it? Spend a few quid/dollars on a proper working power supply.


==============================================================================
TOPIC: Boss TU-120 Electronic Tuner Schematic Roland LED Strobe Guitar Tuning
http://groups.google.com/group/sci.electronics.repair/t/9beb1a7b35ce5c6e?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Mar 5 2011 5:58 am
From: "William Sommerwerck"


> I still remember 0.4971 and its significance.

Are you referring to the Peter Mitchell paper about the influence of the
pocket calculator on teaching math and science? I'd like to read the
article, but I'm blocked because I'm not a subscriber.

==============================================================================
TOPIC: Fairchiled KA5L0165R source?
http://groups.google.com/group/sci.electronics.repair/t/90610bd811debae9?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Mar 5 2011 7:14 am
From: The Other Mike


Anyone know of a source in the UK or an equivalent?

The eEquipment dates from about 2005, datasheet from 2003

http://pdf1.alldatasheet.com/datasheet-pdf/view/53237/FAIRCHILD/5L0165R.html

From the datasheet:

"The Fairchild Power Switch(FPS) consist of high
voltage power SenseFET and current mode PWM IC. Included
PWM controller features integrated fixed oscillator, under
voltage lock out, leading edge blanking, optimized gate turn-on/
turn-off driver, thermal shut down protection, over voltage
protection, and temperature compensated precision current
sources for loop compensation and fault protection circuitry
compared to discrete MOSFET and controller or RCC
switching converter solution, The Fairchild Power Switch(FPS)
can reduce total component count, design size, weight and at the
same time increase efficiency, productivity, and system
reliability. It is well suited for cost effective design of flyback
converters."

==============================================================================
TOPIC: Sitre Magana was caught beating off at the Post Office
http://groups.google.com/group/sci.electronics.repair/t/93e213db5243c205?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Mar 5 2011 2:52 am
From: Michael Gross


Lady Veteran wrote:
> On Thu, 03 Mar 2011 08:43:09 +0000, Lady Veteran
> <clamchelle69@yahoo.com.au> wrote:
>
>> clamchelle69@yahoo.com.au
>
> I have already reported this moron once to his ISP for impersonating
> me. I guess it wants to go jail. I bet it has a police record. If it
> doesn't I will provide him with one and it won't be able to get a job
> as a hooker.
>
> LV
>

What are you going to do? Call the police and tell them that this poster
was right behind you at the post office pounding his pud?

==============================================================================
TOPIC: Connector from a computer USB connection to a ribbon cable and a HD
http://groups.google.com/group/sci.electronics.repair/t/877f53f3dc7269f3?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Mar 5 2011 11:32 am
From: jvalh


Chris Bryant wrote:
> jvalh wrote:
>> Hello Experts,
>>
>> Recently a computer I have went belly up. I have removed the HD with the
>> ribbon cable attached to it. Does anyone know of a connector that would
>> connect the plug on that ribbon to a USB socket on the computer?
>>
>> Another Q: If the connection is made could a Windows installation on
>> that HD be run on the computer?
>>
>> Could a SATA HD be used in the same way instead of the plain old HD?
>>
>> TIA and a great week to you all :-)
>
> it sounds complicated. You'll have to bring your computer to the United
> States Post Office, and have them put it in a box and mail it to me so I
> can check it out. You should get there before Sitre Magana and his ugly
> girlfriend Dori arrive unless you want to be holding a computer in one
> arm while covering your eyes with the other arm while Sitre Magana is
> behind his ugly girlfriend Dori pounding his pud in front of you at the
> Post Office.
>
> When I'm done with that PC I will put it in it's box and send it back to
> you, possibly use the UPS store so I don't have to take a chance of
> Sitre Magana behind his ugly girlfriend Dori.

Naa! I think you would eat anything I sent you :-)

==============================================================================
TOPIC: Proof that Sitre Magana is really gay.....
http://groups.google.com/group/sci.electronics.repair/t/2f087253676054f1?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Mar 5 2011 3:58 am
From: Michael Gross


If you want to know why he pounds his pud at the Post Office behind a
rather masculine woman he claims is his girlfriend Dori.....

AT ONCE I HAD TWO GIRLFRIENDS NAMED DUSSTY AND SARA. SARA HAD THE
WORLDS BIGGEST GAZANGAS. MY RELATIONSHIP WITH DUSTY ENDED THE DAY I
FOUND OUT SHE ABORTED MY SON AND SARA BROKE UP WITH ME AFTER I SHOWED
HER THE 40,000 DOLLAR CADILLAC I BOUGHT HER. SHE TOLD ME THAT SHE
COULDN'T SPEND THE REST OF HER LIFE WITH A MAN WHO ONLY LIVES TO
ANTAGANIZE HIS BOSS. I CALLED HER A SACK OF SHIT, AND THAT WAS THAT.

TODAY, HOWEVER, MY BESTEST BUDDY JOHN PIGYE AND I WALKED OUT OF OUR
APARTMENT BUTT NAKED TOGETHER OUT TO THE CAR AND WE DROVE AROUND TOWN
FOR ABOUT AN HOUR WITH OUR NEW STEREO SYSTEM. IT'S GOT 4000 WATTS OF
BASE AND A SIRIUS SATELLITE RADIO, OF COURSE.

==============================================================================
TOPIC: But one thing is for sure, you will be serious about your feelings and
sheer de
http://groups.google.com/group/sci.electronics.repair/t/d4114ae5616ecd0c?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Mar 5 2011 6:21 pm
From: shoesbuy


<p>But one thing is for sure, you will be serious about your feelings
and sheer determination, will provide you the correct nuts and bolts
establish steam. This month after the 16th are easy to channel your
ambitions, full throttle make things happen. You won't follow a dozen
<a href="http://www.heelshoes08.com/">christian louboutin thigh high
boots</a> path, but you'll do what works best for you.</p> <p>Finally,
the <a href="http://www.heelshoes08.com/">prada shoes sale</a>
computer is a region will have great progress, over the next few
years. Ford and Microsoft joint, created synchronization. They also
have the similar creation of new alfa romeo and fiat, and it will be
so happened worldwide. The term entertainment center is I need to
write things. Essentially, it's the heart of all have fun, music, GPS/
navigation, cell phone (bluetooth) connection, etc; And the lexus have
beautiful such criteria are compared all others. It with synchronous
expansion, Windows based is of course. In other words, you have the
other features, they have the lexus information entertainment systems,
but you can synchronize solely rely on a thumbdrive.</p>

==============================================================================
TOPIC: Panasonic Inverter Microwave Oven Schematic request
http://groups.google.com/group/sci.electronics.repair/t/6b00e79030ce1836?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Mar 5 2011 6:29 pm
From: invalid


Greetings,

I am experimenting with the inverter board from the Panasonic
NN-H665BF microwave oven (part no. F66456G01AP) in an effort
to convert it from constant power to constant voltage and
reduce output noise, ripple, and voltage to 2kV. I have
the schematic for a somewhat similar Panasonic oven, the
NN-G62BH, but there are big differences, especially that
my oven inverter uses only a single IGBT driver, has
no current transformer and uses a very different control
IC.

In a web forum, a poster mentioned having schematics for
these ovens on a 'Panasonic Service Manual CD' but I have
not found any other reference to this online.

Does anyone have a schematic or could point me to a source
(the Panasonic website only shows 'Instruction Manuals'
which are users' guides.)?

Hopefully I can save the many hours required to trace the
PCB. Thanks,

Michael

==============================================================================
TOPIC: reparing battery pack
http://groups.google.com/group/sci.electronics.repair/t/0d9491f5db686f53?hl=en
==============================================================================

== 1 of 3 ==
Date: Sat, Mar 5 2011 7:05 pm
From: LSMFT


When I rebuild my drill battery pack with new C nicads do I have to stay
in the same mAh rating. The originals are 1300mAh, I can replace them
with 2300mAh cells with tabs. Or even 4000mAh ones. Will more mAh hurt
the drill?


--
LSMFT


Force shits upon the Back of Reason...
Ben Franklin-


== 2 of 3 ==
Date: Sat, Mar 5 2011 8:46 pm
From: "Phil Allison"

"LSMFT"
>
> When I rebuild my drill battery pack with new C nicads do I have to stay
> in the same mAh rating. The originals are 1300mAh, I can replace them with
> 2300mAh cells with tabs. Or even 4000mAh ones. Will more mAh hurt the
> drill?

** Nope.

But it will take proportionally longer to charge as the mAh rating goes up.

BTW:

Who makes 4000mAh Ni-Cds in C size ??


.... Phil


== 3 of 3 ==
Date: Sat, Mar 5 2011 2:26 pm
From: Stephany Alexander


Phil Allison wrote:
> "LSMFT"
>> When I rebuild my drill battery pack with new C nicads do I have to stay
>> in the same mAh rating. The originals are 1300mAh, I can replace them with
>> 2300mAh cells with tabs. Or even 4000mAh ones. Will more mAh hurt the
>> drill?
>
> ** Nope.
>
> But it will take proportionally longer to charge as the mAh rating goes up.
>
> BTW:
>
> Who makes 4000mAh Ni-Cds in C size ??
>
>
> .... Phil
>
>
Just because you don't know who makes them doesn't mean they don't exist.

You can also say, "Nobody pounded their pud at the Post Office" but that
doesn't mean that Sitre Magana wasn't caught beating off at the Post Office.

==============================================================================
TOPIC: Fender SPL 9000 , 1997 slave amp
http://groups.google.com/group/sci.electronics.repair/t/e8c4224393658fe1?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Mar 5 2011 2:29 pm
From: Lady Veteran


N_Cook wrote:
> About half the solder joints on the input sub-board are bad. A .25 and M&F
> XLR each ch with no obvious reason why, as all sockets are individually
> fixed to stout chassis metal . Even the never been used quarter inch sockets
> have bad solder joints. The solder looks good otherwise.
>
>

Don't assume that the solder is good based on looks. If you saw Sitre
Magana at the Post Office for the first time, you would automatically
assume that he isn't about to start pounding his pud right in front of you.

LV
--


"I rode a tank and held a general's rank
When the blitzkrieg raged and the bodies stank."

---Sympathy for the Devil-The Rolling Stones
--------------------------------------------

"Only a male compensating for his impotence
would accuse a strong woman of being a lesbian."

---Unknown
----------------------------------------------

"It's a sign of your own worth sometimes if you are
hated by the right people."

---Miles Franklin
----------------------------------------------

See the latest idiot featured on my blog!

My Blog http://ladyveteranslog.blogspot.com
---------------------------------------------
Are you being harassed on Usenet and want to fight
back instead of leaving the net? Are you willing to
stand up to Internet bullies and stalkers?

Join my group http://groups.yahoo.com/group/antiCHU
----------------------------------------------

==============================================================================
TOPIC: marlboro guitar amp
http://groups.google.com/group/sci.electronics.repair/t/fcc95e7f4b10829b?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Mar 5 2011 2:31 pm
From: Lady Veteran


lurk wrote:
> Anyone have a schematic for this unit ? its a marlboro 1200R thanks
>
>

Marlboro? They make smokes.

LV
--


"I rode a tank and held a general's rank
When the blitzkrieg raged and the bodies stank."

---Sympathy for the Devil-The Rolling Stones
--------------------------------------------

"Only a male compensating for his impotence
would accuse a strong woman of being a lesbian."

---Unknown
----------------------------------------------

"It's a sign of your own worth sometimes if you are
hated by the right people."

---Miles Franklin
----------------------------------------------

See the latest idiot featured on my blog!

My Blog http://ladyveteranslog.blogspot.com
---------------------------------------------
Are you being harassed on Usenet and want to fight
back instead of leaving the net? Are you willing to
stand up to Internet bullies and stalkers?

Join my group http://groups.yahoo.com/group/antiCHU
----------------------------------------------

==============================================================================
TOPIC: Looking For Usable Multimeter - Cheap
http://groups.google.com/group/sci.electronics.repair/t/e1a0542b17d8b08d?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Mar 5 2011 2:33 pm
From: Lady Veteran


(PeteCresswell) wrote:
> I've got a Micronta that's getting weird on me. Thing must be
> 30 years old, but it always did what little I needed of it:
>
> - Checking automobile battery voltages
>
> - Checking various other batteries' voltages
>
> - Looking for shorts
>
>
> Can anybody recommend a replacement that doesn't cost an arm and
> a leg?
>
> I'm thinking hardware-store quality is going tb adequate, but
> don't know the ins and outs.

You can get them at Wal-Mart for around $12.99. Just be aware though,
that Sitre Magana can be hanging out at Wal-Mart and could think that
he's still at the Post Office.

LV
--


"I rode a tank and held a general's rank
When the blitzkrieg raged and the bodies stank."

---Sympathy for the Devil-The Rolling Stones
--------------------------------------------

"Only a male compensating for his impotence
would accuse a strong woman of being a lesbian."

---Unknown
----------------------------------------------

"It's a sign of your own worth sometimes if you are
hated by the right people."

---Miles Franklin
----------------------------------------------

See the latest idiot featured on my blog!

My Blog http://ladyveteranslog.blogspot.com
---------------------------------------------
Are you being harassed on Usenet and want to fight
back instead of leaving the net? Are you willing to
stand up to Internet bullies and stalkers?

Join my group http://groups.yahoo.com/group/antiCHU
----------------------------------------------

==============================================================================
TOPIC: Help - UPS not charging
http://groups.google.com/group/sci.electronics.repair/t/2f1fedcfd7a3b652?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Mar 5 2011 2:34 pm
From: Lady Veteran


martinmarty wrote:
> I have a UPS about 11 years old. It is an IBM OfficePro 700 which is
> actually a Tripp-Lite product. Inside on the circuit board it says
> 66-0546. The web says the Mfr model number is 10K1912.
>
> Not too long ago its yellow light started flashing that says the
> batteries are discharged. Because of its age, I assumed the batteries
> were worn out so I bought new ones. Unfortunately, after installing
> them the problem did not go away.
>
> When plugged in to AC, the unit has its green LED lit which shows it
> is getting AC power in. The yellow LED flashes. according to the
> manual, "This yellow light will turn ON continuously to indicate that
> the UPS's battery is less than fully charged. If it stays on
> continuously, contact Tripp-Lite fo service. The light will flash
> after you set the 'OFF/ON' Switch to the 'OFF' position to indicate
> that the UPS will not provide battery backup during a blackout or
> brownout." Regardless of whether I set the OFF/ON switch to OFF or ON,
> the yellow light flashes.
>
> There is a Mute/Test switch. If I run the test, the red LED briefly
> lights and the alram briefly sounds, as if it tried to switch over to
> battery power but there was no power there.
>
> It kind of seems like the charging circuit is not charging the
> batteries but I don't know how to test this theory. I left it sit
> plugged in for a few days hoping it would charge but it did not.
>
> There are several fuses on the circuit board, all soldered on, and
> they all measure zero ohms so I don't think that is the problem. There
> are no obviously leaky capacitors or any other components that look
> burned up or damaged judging by visual inspection.
>
> I like this UPS and would like to revive it, especially since I spent
> money on the new batteries. If anybody could help me diagnose the
> problem, tell me where to start, what to check, etc. I would
> appreciate it.
>
> All ideas welcome. Thanks in advance.

Since you said that all ideas are welcome heres one -- You should start
using Fedex or the UPS store. Just in case that you are at the Post
Office and Sitre Magana's behind you and he sees his ugly girlfriend
Dori in front of you and he starts pounding his pud in front of you.

LV
--


"I rode a tank and held a general's rank
When the blitzkrieg raged and the bodies stank."

---Sympathy for the Devil-The Rolling Stones
--------------------------------------------

"Only a male compensating for his impotence
would accuse a strong woman of being a lesbian."

---Unknown
----------------------------------------------

"It's a sign of your own worth sometimes if you are
hated by the right people."

---Miles Franklin
----------------------------------------------

See the latest idiot featured on my blog!

My Blog http://ladyveteranslog.blogspot.com
---------------------------------------------
Are you being harassed on Usenet and want to fight
back instead of leaving the net? Are you willing to
stand up to Internet bullies and stalkers?

Join my group http://groups.yahoo.com/group/antiCHU
----------------------------------------------

==============================================================================
TOPIC: 24V Lead Acid Battery Charger Control Module PCB Recommendations
http://groups.google.com/group/sci.electronics.repair/t/79ff67912b0400b9?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, Mar 5 2011 2:36 pm
From: Lady Veteran


Wild_Bill wrote:
> I have a 24V (10A capacity) Lead Acid battery charger that was made in
> 1986, and would like to replace the control module in it with a
> module/board (something) that will handle the cutoff at a safe level.
>
> Any recommendations would be appreciated.
>
I recommend that if you should have to go to the Post Office ask
everybody, "is your name Sitre Magana" and if somebody says "Yes" just
run out of there as fast as you could because you don't want to be there
when his ugly girlfriend Dori walks in and he starts pounding his pud.

> The original circuit is a Lester Compu Time p/n 11625 circuit board
> (approx 2" x 4") is installed in a Everest Jennings Model 11350 24V/10A
> wheelchair battery charger.
> A replacement circuit that's much larger than the original board size of
> ~2" x 4" would require a larger charger case, or a separate metal box
> attached to the original case.
>
> --
> Cheers,
> WB
> .............

LV
--


"I rode a tank and held a general's rank
When the blitzkrieg raged and the bodies stank."

---Sympathy for the Devil-The Rolling Stones
--------------------------------------------

"Only a male compensating for his impotence
would accuse a strong woman of being a lesbian."

---Unknown
----------------------------------------------

"It's a sign of your own worth sometimes if you are
hated by the right people."

---Miles Franklin
----------------------------------------------

See the latest idiot featured on my blog!

My Blog http://ladyveteranslog.blogspot.com
---------------------------------------------
Are you being harassed on Usenet and want to fight
back instead of leaving the net? Are you willing to
stand up to Internet bullies and stalkers?

Join my group http://groups.yahoo.com/group/antiCHU
----------------------------------------------


==============================================================================

You received this message because you are subscribed to the Google Groups "sci.electronics.repair"
group.

To post to this group, visit http://groups.google.com/group/sci.electronics.repair?hl=en

To unsubscribe from this group, send email to sci.electronics.repair+unsubscribe@googlegroups.com

To change the way you get mail from this group, visit:
http://groups.google.com/group/sci.electronics.repair/subscribe?hl=en

To report abuse, send email explaining the problem to abuse@googlegroups.com

==============================================================================
Google Groups: http://groups.google.com/?hl=en

No Response to "sci.electronics.repair - 22 new messages in 15 topics - digest"

Post a Comment