sci.electronics.repair - 23 new messages in 11 topics - digest

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

sci.electronics.repair@googlegroups.com

Today's topics:

==============================================================================
TOPIC: CRT vertical deflection -- bad solder joints?
http://groups.google.com/group/sci.electronics.repair/t/f637b1e686d3f98e?hl=en
==============================================================================

== 1 of 9 ==
Date: Tues, Mar 29 2011 1:48 am
From: Mike Tomlinson

In article <157d392f-817a-4788-b72b-5198c68bb1af@glegroupsg2000goo.googl
egroups.com>, whit3rd <whit3rd@gmail.com> writes

>The capacitor is inexpensive; just replace it with a new one,
>don't bother with testing the old unit.

*whoosh*

And how is he supposed to locate the offending capacitor without some
form of test equipment?

--
Mike Tomlinson

== 2 of 9 ==
Date: Tues, Mar 29 2011 1:49 am
From: Mike Tomlinson

In article <z2akp.203037$Bg2.147257@newsfe03.ams2>, Arfa Daily
<arfa.daily@ntlworld.com> writes

>I think you are missing the point of what he was saying regarding ESR.

I think so too :o)

>My money would be 100% on it being
>a bad cap

--
Mike Tomlinson

== 3 of 9 ==
Date: Tues, Mar 29 2011 3:17 am
From: "Mark Zacharias"

"Mike Tomlinson" <mike@jasper.org.uk> wrote in message
news:h9Lw4IA1zZkNFwZu@jasper.org.uk...
> In article <157d392f-817a-4788-b72b-5198c68bb1af@glegroupsg2000goo.googl
> egroups.com>, whit3rd <whit3rd@gmail.com> writes
>
>>The capacitor is inexpensive; just replace it with a new one,
>>don't bother with testing the old unit.
>
> *whoosh*
>
> And how is he supposed to locate the offending capacitor without some
> form of test equipment?
>
> --
> Mike Tomlinson

Just look for the 100uF at 35v cap next to the output IC. :-)

Mark Z.

== 4 of 9 ==
Date: Tues, Mar 29 2011 6:29 am
From: "William Sommerwerck"

Hello? Instead of fussing over it, why not replace all the electrolytics "in
the vicinity" while the bad-looking solder joints are being re-done?

This is a common problem in servicing. As an EE, I want to know exactly why
something isn't working correctly. But I learned a long time ago that it's
more important to simply get the damned thing fixed. If that means
shotgunning likely components, so be it.

== 5 of 9 ==
Date: Tues, Mar 29 2011 6:52 am
From: Mike Tomlinson

In article <imsmrd$5nf$1@dont-email.me>, William Sommerwerck
<grizzledgeezer@comcast.net> writes

>This is a common problem in servicing. As an EE, I want to know exactly why
>something isn't working correctly. But I learned a long time ago that it's
>more important to simply get the damned thing fixed. If that means
>shotgunning likely components, so be it.

If you're fixing stuff regularly, particularly many of the same item,
it's worth diagnosing the problem so that in future you can say, "oh,
that model, that fault, it's C35", and replace that - saving time and
the cost of replacing components unnecessarily.

--
Mike Tomlinson

== 6 of 9 ==
Date: Tues, Mar 29 2011 11:57 am
From: whit3rd

On Monday, March 28, 2011 5:51:41 PM UTC-7, Arfa Daily wrote:
> "whit3rd" <whi...@gmail.com> wrote in message
> news:157d392f-817a-4788-b72b-5198c68bb1af@glegroupsg2000goo.googlegroups.com...
> > On Monday, March 28, 2011 4:15:45 AM UTC-7, Mike Tomlinson wrote:
> >> In article <fa3b18fc-cf26-4f79-8899-e45f302cb1e6@l14g2000pre.googlegroup
> >> s.com>, Sean Hamilton <sean...@gmail.com> writes
> >>
> >> >Is it likely that bad solder joints would cause vertical foldover in a
> >> >mid-90s CRT television?
> >>
> >> Yes, but it's more likely to be a bad cap.
> >
> >> Visual inspection is not enough. You need an ESR meter.
> >
> > Maybe not; the ESR issues crop up mainly in high-performance
> > low voltage power supplies

> I think you are missing the point of what he was saying regarding ESR. This
> parameter is a valid test of the 'goodness' of any electrolytic capacitor,

A test, yes; but not a complete test. The ESR of a 10uF capacitor can be
good, but it won't do the work of a 100 uF capacitor. A combination
of ESR and capacitor-meter testing is better, and a test at the
frequency of interest for ripple reduction is better still.

I wouldn't bother with any of that parameter testing, though.
If you suspect the 10-year-old capacitor, replace it. You'd possibly have to
desolder to test it anyhow, spend the eighty-five cents to put in a new
one.

== 7 of 9 ==
Date: Tues, Mar 29 2011 6:19 pm
From: "Arfa Daily"

"William Sommerwerck" <grizzledgeezer@comcast.net> wrote in message
news:imsmrd$5nf$1@dont-email.me...
> Hello? Instead of fussing over it, why not replace all the electrolytics
> "in
> the vicinity" while the bad-looking solder joints are being re-done?
>
> This is a common problem in servicing. As an EE, I want to know exactly
> why
> something isn't working correctly. But I learned a long time ago that it's
> more important to simply get the damned thing fixed. If that means
> shotgunning likely components, so be it.
>
>

Shotgunning is, IMHO, very bad practice, and often leads to the creation of
more problems than it fixes. I am actually quite surprised that you would
advocate doing this, William.

Arfa

== 8 of 9 ==
Date: Tues, Mar 29 2011 6:20 pm
From: "Arfa Daily"

"Mike Tomlinson" <mike@jasper.org.uk> wrote in message
news:U6QNJSBZQekNFwPA@jasper.org.uk...
> In article <imsmrd$5nf$1@dont-email.me>, William Sommerwerck
> <grizzledgeezer@comcast.net> writes
>
>>This is a common problem in servicing. As an EE, I want to know exactly
>>why
>>something isn't working correctly. But I learned a long time ago that it's
>>more important to simply get the damned thing fixed. If that means
>>shotgunning likely components, so be it.
>
> If you're fixing stuff regularly, particularly many of the same item,
> it's worth diagnosing the problem so that in future you can say, "oh,
> that model, that fault, it's C35", and replace that - saving time and
> the cost of replacing components unnecessarily.
>
> --
> Mike Tomlinson

Seconded ...

Arfa

== 9 of 9 ==
Date: Tues, Mar 29 2011 6:29 pm
From: "William Sommerwerck"

>> This is a common problem in servicing. As an EE, I want to know
>> exactly why something isn't working correctly. But I learned a long
>> time ago that it's more important to simply get the damned thing
>> fixed. If that means shotgunning likely components, so be it.

> Shotgunning is, IMHO, very bad practice, and often leads to the
> creation of more problems than it fixes. I am actually quite surprised
> that you would advocate doing this, William.

I don't understand how shotgunning can /create/ problems, as long as the
replaced components are correct replacements. Unless you mean the customer
might get upset.

As an experienced service technician, you know that the cause of a given
problem is not always obvious, even after extensive troubleshooting. The
customer is paying for your time, often more than what the parts cost. Why
burn up the customer's money when replacing a half-dozen parts is likely to
fix the thing?

==============================================================================
TOPIC: Does "Distance Learning" get you a job as an electronic technician?
http://groups.google.com/group/sci.electronics.repair/t/47f58fefa6e503c2?hl=en
==============================================================================

== 1 of 2 ==
Date: Tues, Mar 29 2011 2:49 am
From: Mike Tomlinson

In article <15e02d95-560b-403e-9112-8df74347bf37@j9g2000prj.googlegroups
.com>, James <myomassage@gmail.com> writes

>Does "Distance Learning" get you a job as an electronic technician?

It'll get you a pretty piece of paper, but there is no substitute for
hands-on experience. You'd do better to take a course at your local
college or uni as long as it involves a practical element.

--
Mike Tomlinson

== 2 of 2 ==
Date: Tues, Mar 29 2011 7:36 am
From: Meat Plow

On Mon, 28 Mar 2011 19:33:23 -0700, James wrote:

> Does "Distance Learning" get you a job as an electronic technician? What
> school did you go to ?
>
> Thank You for Your input
> James

I started as a mobile installer in the late 70's. Already had electronics
in the blood, knowing how to solder basic understanding about principals
I was selected for some advanced on the job training. Within a couple
years I had surpassed my mentors. I have trained techs fresh out of
school. One I remember couldn't solder two wires together. Having a
diploma won't land you a job necessarily. You'll still need some pretty
extensive training and someone willing to give it to you.

--
Live Fast Die Young, Leave A Pretty Corpse

==============================================================================
TOPIC: sex medicine & hot videos
http://groups.google.com/group/sci.electronics.repair/t/17126ba2310db142?hl=en
==============================================================================

== 1 of 1 ==
Date: Tues, Mar 29 2011 3:19 am
From: SRAVANTHI LOVE

how to encourage women hot sex
http://onlyforhealth-muni.blogspot.com/2011/03/medicine-for-women.html
food list for pregnant womens
http://onlyforhealth-muni.blogspot.com/2011/03/pregnants-food-list.html
hormone imbalance for men and women
http://onlyforhealth-muni.blogspot.com/2011/03/hormone-imbalance.html
sex medicine for men
http://onlyforhealth-muni.blogspot.com/2011/03/sildenafil-citrate.html
cure diseases only with water
http://onlyforhealth-muni.blogspot.com/2011/03/water-theraphy.html
antibiotics and there uses
http://onlyforhealth-muni.blogspot.com/2010/12/antibiotics-introduction.html

hot katrina kaif wallpapers
http://cinyworld96.blogspot.com/2011/03/katrina-kaif.html
deepika padukone new stills
http://cinyworld96.blogspot.com/2011/03/deepika-padukone.html
beautiful aishwariya rai
http://cinyworld96.blogspot.com/2011/03/aishwariya-rai.html
diya mirza sexy photos
http://cinyworld96.blogspot.com/2011/03/diya-mirza.html
stunning beauty sneha
http://cinyworld96.blogspot.com/2011/03/sneha.html
unbelivable iliyana photos
http://cinyworld96.blogspot.com/2011/03/iliyana.html
priyamani beautiful stills
http://cinyworld96.blogspot.com/2011/03/priyamani.html

==============================================================================
TOPIC: Magnavox ZV450MW8A Remote Control Fix?
http://groups.google.com/group/sci.electronics.repair/t/c88c8c3007ad7b2b?hl=en
==============================================================================

== 1 of 3 ==
Date: Tues, Mar 29 2011 4:28 am
From: PeterD

On 3/28/2011 1:56 PM, Michael A. Terrell wrote:
>
> Guv Bob wrote:
>>
>> I have had this DVD/VCR combo unit for over 3 years now, and would like to find out if anyone has found a 3rd party remote control that can be used with it, or if the factory has a remote with upgraded software.
>>
>> The device is top quality and the manual is excellent, but the remote is so complicated and non-intuitive that if you don't use it every day, you have to go back to the manual, even after this long time.
>>
>> The manual does leave out some basic steps -- like how to set the record speed (which they call "mode"). I'm fairly good with electronics (servicing industrial electronics is my business) and took me a good year before I could make basic settings without looking it up.
>>
>> Most of the features can't be done from the device and must be done via the remote control which is cryptic. It has way too many buttons, even for a combo unity, and has tiny labels that can't be read in a darkened room. If you hit a wrong button, sometimes it is impossible to figure out how to return the device to normal use without digging out the manual again. My manual is well worn and has many notes scribbled in it now.
>>
>> One problem is that when you are using the timer, you have to turn the device off and on with a button other than the ON/OFF button. If your lovely wife comes in and used ON/OFF, it disables the timer, and must be reset again with the special non-ON/OFF button.
>>
>> It is a real shame that such a fine device from a good manufacturer has such a poor user interface. A better designed remote would completely change the usability.
>
>
> Wrong newsgroup. This is a test equipment newsgroup. You want
> news:sci.electronics.repair.
>
>

Michael... Careful you posted your reply to the wrong groups too! <g>

--
I'm never going to grow up.

== 2 of 3 ==
Date: Tues, Mar 29 2011 5:25 am
From: "Michael A. Terrell"

PeterD wrote:
>
> On 3/28/2011 1:56 PM, Michael A. Terrell wrote:
> >
> > Guv Bob wrote:
> >>
> >> I have had this DVD/VCR combo unit for over 3 years now, and would like to find out if anyone has found a 3rd party remote control that can be used with it, or if the factory has a remote with upgraded software.
> >>
> >> The device is top quality and the manual is excellent, but the remote is so complicated and non-intuitive that if you don't use it every day, you have to go back to the manual, even after this long time.
> >>
> >> The manual does leave out some basic steps -- like how to set the record speed (which they call "mode"). I'm fairly good with electronics (servicing industrial electronics is my business) and took me a good year before I could make basic settings without looking it up.
> >>
> >> Most of the features can't be done from the device and must be done via the remote control which is cryptic. It has way too many buttons, even for a combo unity, and has tiny labels that can't be read in a darkened room. If you hit a wrong button, sometimes it is impossible to figure out how to return the device to normal use without digging out the manual again. My manual is well worn and has many notes scribbled in it now.
> >>
> >> One problem is that when you are using the timer, you have to turn the device off and on with a button other than the ON/OFF button. If your lovely wife comes in and used ON/OFF, it disables the timer, and must be reset again with the special non-ON/OFF button.
> >>
> >> It is a real shame that such a fine device from a good manufacturer has such a poor user interface. A better designed remote would completely change the usability.
> >
> >
> > Wrong newsgroup. This is a test equipment newsgroup. You want
> > news:sci.electronics.repair.
> >
> >
>
> Michael... Careful you posted your reply to the wrong groups too! <g>

No. I added the proper group.

--
You can't fix stupid. You can't even put a Band-Aid� on it, because it's
Teflon coated.

== 3 of 3 ==
Date: Tues, Mar 29 2011 6:25 am
From: "William Sommerwerck"

The problem, Guv Bob, is not so much in the remote control, but in the
unit's firmware, which requires such confusing operation. Many products are
designed with no concern whatever as to how people actually use them.

The only thing I can suggest is to buy a remote control that can be
programmed with IR sequences from your existing remote, AND supports macros.
You should then be able to create one-button commands.

==============================================================================
TOPIC: world meti nano dna
http://groups.google.com/group/sci.electronics.repair/t/f46cadf348a9d7a8?hl=en
==============================================================================

== 1 of 1 ==
Date: Tues, Mar 29 2011 6:07 am
From: ram

http://worldbankgroup-kavi.blogspot.com/
http://meticulous-kavi.blogspot.com/
http://nanotechnologyfire-kavi.blogspot.com/
http://dnasequencing-kavi.blogspot.com/

==============================================================================
TOPIC: hai
http://groups.google.com/group/sci.electronics.repair/t/2b854d3d4f15429f?hl=en
==============================================================================

== 1 of 2 ==
Date: Tues, Mar 29 2011 6:14 am
From: vijay balan

http://123maza.com/75/model419/

== 2 of 2 ==
Date: Tues, Mar 29 2011 6:15 am
From: vijay balan

http://123maza.com/75/model419/

==============================================================================
TOPIC: DATING FOR HOT GIRLS - FREE ONLINE CHATTING - MORE DATING TIPS HERE
http://groups.google.com/group/sci.electronics.repair/t/6cd2f60ea285ceb9?hl=en
==============================================================================

== 1 of 1 ==
Date: Tues, Mar 29 2011 7:16 am
From: devi vithya

http://dating-chatting143.blogspot.com/

==============================================================================
TOPIC: Viewsonic G810 with weird horizontal problem
http://groups.google.com/group/sci.electronics.repair/t/fb407eb5e24f82b2?hl=en
==============================================================================

== 1 of 1 ==
Date: Tues, Mar 29 2011 8:07 am
From: Dani

Replace the flyback transformer part # Tlfa01365, & resolder the
horizontal drive, & power supply section. Hope this helps.

==============================================================================
TOPIC: Yamaha Stagepas 300
http://groups.google.com/group/sci.electronics.repair/t/5428ff9d7265b16b?hl=en
==============================================================================

== 1 of 1 ==
Date: Tues, Mar 29 2011 11:27 am
From: "Gareth Magennis"

Oops that wasn't meant to happen.

Windows has had for years this silly thing where if you click "reply to
group", a new Reply window appears with the "Send" clickbox in the exact
same place. So if you inadvertently double click the "reply to group"
button you can erroneously send a blank reply in the blink of an eye.
Especially after a few glasses of wine.

==============================================================================
TOPIC: Mitsubishi WD-52525 issue.
http://groups.google.com/group/sci.electronics.repair/t/02fbd41f8583f257?hl=en
==============================================================================

== 1 of 1 ==
Date: Tues, Mar 29 2011 5:52 pm
From: grider

I'm having trouble with my dlp television. The problem is that I'm
getting random lines that show up on my screen in various areas of the
screen. It seems to happen more around text on the screen where I
might see a few lines scan across a certain area of the screen (not
the whole length of the screen, might be just a couple of inches).
These lines appear in different parts of the screen but seem to be
mostly on the left side (as looking at screen). Again it may be
anywhere from one line shooting from left to right or it may be
several at one time (all shooting left to right motion). The color of
the line(s) will vary at different times. I'm just not sure what could
be causing this. Very strange issue.

Anyone have any ideas?

I've tried to reset the TV, doesn't fix the problem.

Thanks....

==============================================================================
TOPIC: motherboard RAM failures
http://groups.google.com/group/sci.electronics.repair/t/3e25b3ae78058770?hl=en
==============================================================================

== 1 of 1 ==
Date: Tues, Mar 29 2011 9:43 pm
From: Smitty Two

In article <mch5o6lvkka0nlgto4h7kcr1c0pk6029vb@4ax.com>,
Jeff Liebermann <jeffl@cruzio.com> wrote:

> The model number of the MSI motherboard and the exact spec of the RAM
> might have been helpful. Some motherboards are VERY picky about the
> type and speed of RAM that they use. On the borderline devices, a
> given SDRAM stick will barely work in one slot, and fail in others.
> You might be dealing with such borderline situations. Numbers please.

Sorry about the delay in getting back to you on this. I'm not
experienced with component specs, so this may not even be enough to go
on, but the only info on the boxes is:

motherboard: MSI X58 Pro-E
RAM: Corsair "Dominator" DDR3. Using 3x 2GB sticks.

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

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

Electronics

sci.electronics.repair - 23 new messages in 11 topics - digest

No Response to "sci.electronics.repair - 23 new messages in 11 topics - digest"

Post a Comment

Blog Roll

Blog Archive