sci.electronics.repair@googlegroups.com

Today's topics:

* ghnvfg - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/8c2e6dae86d2dd78?hl=en
* vcr repair emerson ev868 - 2 messages, 2 authors
http://groups.google.com/group/sci.electronics.repair/t/f659f5c07e5f1eac?hl=en
* Fixing a bent usb - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/9f38e546d86013dd?hl=en
* Valves badged Orange , rebadged what make? - 3 messages, 3 authors
http://groups.google.com/group/sci.electronics.repair/t/b405f7894dddeac4?hl=en
* Power transistor question... - 8 messages, 5 authors
http://groups.google.com/group/sci.electronics.repair/t/48e3a91c572ef00c?hl=en
* `HOT SEXY PHOTOS&VIDEOS**** - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/c5c6ce78701614f3?hl=en
* Vettel: I don't want my girlfriend at pit - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/58fc2669d82cf348?hl=en
* Wall Warts - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/de407a5056a54ee0?hl=en
* microwave oven stopping prematurely, repairable? - 2 messages, 2 authors
http://groups.google.com/group/sci.electronics.repair/t/a4366967d76451a5?hl=en

==============================================================================
TOPIC: ghnvfg
http://groups.google.com/group/sci.electronics.repair/t/8c2e6dae86d2dd78?hl=en
==============================================================================

== 1 of 1 ==
Date: Fri, May 27 2011 10:18 pm
From: hemaaruchamy hemalatha

http://123maza.com/65/Claws470/

==============================================================================
TOPIC: vcr repair emerson ev868
http://groups.google.com/group/sci.electronics.repair/t/f659f5c07e5f1eac?hl=en
==============================================================================

== 1 of 2 ==
Date: Sat, May 28 2011 12:52 am
From: "N_Cook"

nucleus <rose122550@yahoo.com> wrote in message
news:3710dd2c-9558-4bd4-9c55-d414cc3c120c@q32g2000yqn.googlegroups.com...
> does anyone here have a schematic of a typical optical reader circuit
> on a vcr?
>
> problem is: emerson ev868 vcr powers up and responds to all buttons,
> will load and eject tape but will not respond to remote control. vcr
> does
> send rf to tv.
>
> remote does send IR, as determined with digital camera.
>
> is it necessary to have an oscope to troubleshoot this problem?
>
> optical eye on circuit board has been cleaned.
>

Check f of ceramic resonator agrees with its marking in r/c, or replace it.
If it has been dropped and cracked, r/c can still operate but outside
capture range of Rx

== 2 of 2 ==
Date: Sat, May 28 2011 2:24 pm
From: Franc Zabkar

On Fri, 27 May 2011 15:49:34 -0700 (PDT), nucleus
<rose122550@yahoo.com> put finger to keyboard and composed:

>does anyone here have a schematic of a typical optical reader circuit
>on a vcr?

The typical IR sensor is a 3-pin device, often in a metal can. The
pins are usually +5V, ground, and output.

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

==============================================================================
TOPIC: Fixing a bent usb
http://groups.google.com/group/sci.electronics.repair/t/9f38e546d86013dd?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, May 28 2011 6:17 am
From: mickgeyver

On May 21, 10:59 pm, vjp2...@at.BioStrategist.dot.dot.com wrote:
> Too many times I've thrown out a bent USB..
> what if I really needed it? how likely would I be to repair it?
> Any kits?
>
> Usually happens with memory, but I just dropped and messed up a modem
>
>                                     - = -
>  Vasos Panagiotopoulos, Columbia'81+, Reagan, Mozart, Pindus, BioStrategist
>                    http://www.panix.com/~vjp2/vasos.htm
>   ---{Nothing herein constitutes advice.  Everything fully disclaimed.}---
>    [Homeland Security means private firearms not lazy obstructive guards]
>  [Urb sprawl confounds terror] [Phooey on GUI: Windows for subprime Bimbos]

The micro usb connector broke off in my GPS unit due to flexing of no-
lead solder joints, was able to wick off the no-lead and use leaded to
fix it. Also hit a SAN DISK unit still plugged into the front of my
tower PC causing it to fail by lifting the lands from the board. That
required a few pieces of 30ga wire from the outer pins to a nearby cap
and some finer 40ga magnet wire to connect the D+/D- lines to the
controller chip. Tedious job but it works now.
al

==============================================================================
TOPIC: Valves badged Orange , rebadged what make?
http://groups.google.com/group/sci.electronics.repair/t/b405f7894dddeac4?hl=en
==============================================================================

== 1 of 3 ==
Date: Sat, May 28 2011 6:33 am
From: "Gareth Magennis"

"Gareth Magennis" <sound.service@btconnect.com> wrote in message
news:mLWDp.24219$Am5.16040@newsfe05.ams2...
>
> . Best for my concern would be some NOS Mullards
>> or RCA.
>
>
>
> Yeah well, we could all say that.
> Doesn't help.

Sorry, that post reads a little curt, but for example:

http://cgi.ebay.co.uk/EL34-CV1741-MULLARD-NOS-MATCHED-PAIR-/310210519111?pt=UK_Consumer_VintageAudio_RL&hash=item4839fce047Blimey.Gareth.

== 2 of 3 ==
Date: Sat, May 28 2011 8:22 am
From: "Arfa Daily"

"Gareth Magennis" <sound.service@btconnect.com> wrote in message
news:LQ6Ep.27950$yI6.1646@newsfe06.ams2...
>
>
> "Gareth Magennis" <sound.service@btconnect.com> wrote in message
> news:mLWDp.24219$Am5.16040@newsfe05.ams2...
>>
>> . Best for my concern would be some NOS Mullards
>>> or RCA.
>>
>>
>>
>> Yeah well, we could all say that.
>> Doesn't help.
>
>
> Sorry, that post reads a little curt, but for example:
>
> http://cgi.ebay.co.uk/EL34-CV1741-MULLARD-NOS-MATCHED-PAIR-/310210519111?pt=UK_Consumer_VintageAudio_RL&hash=item4839fce047Blimey.Gareth.

Blimey indeed. However, I know a hifi nutter who wouldn't blink at that
price, if he thought that they were going to improve one of his many
amplifiers - to his ears at least ...

Arfa

== 3 of 3 ==
Date: Sat, May 28 2011 3:58 pm
From: Meat Plow

On Sat, 28 May 2011 14:33:30 +0100, Gareth Magennis wrote:

> "Gareth Magennis" <sound.service@btconnect.com> wrote in message
> news:mLWDp.24219$Am5.16040@newsfe05.ams2...
>>
>> . Best for my concern would be some NOS Mullards
>>> or RCA.
>>
>>
>>
>> Yeah well, we could all say that.
>> Doesn't help.
>
>
> Sorry, that post reads a little curt, but for example:
>
> http://cgi.ebay.co.uk/EL34-CV1741-MULLARD-NOS-MATCHED-
PAIR-/310210519111?
pt=UK_Consumer_VintageAudio_RL&hash=item4839fce047Blimey.Gareth.

I know a few that wouldn't bat an eyelash at that price.

If all my posts don't help everyone, tough shite.

--
Live Fast Die Young, Leave A Pretty Corpse

==============================================================================
TOPIC: Power transistor question...
http://groups.google.com/group/sci.electronics.repair/t/48e3a91c572ef00c?hl=en
==============================================================================

== 1 of 8 ==
Date: Sat, May 28 2011 6:51 am
From: "Dave"

Have a very small (5" screen) black and white TV that has lost its verticle
hold. MIL would like it repaired if possible, and kept in storage in case
of another hurricane knocking out power and services like the last one did.
Upon opening it up I see a power transistor (2SB834) with signs of
overheating. My meter tells me that the E/B and B/C pn junctions are
switching at .574 and .572 volts, respectively. Am I missing the mark, or
does this sound a little low to others as well, as if the pn junctions have
been damaged? Its a few more minutes until my candy store opens, and
several hours before I'll be able to get by there, but to me, this
transistor souinds like a good candidate for replacement. Would appreciate
hearing what others think, if anyone cares to comment. Otherwise I'll bide
my time until I can prove the part one way or another. Just hope I don't
have to order the damn thing and wait a week.

Thanks for any comments...

Dave

== 2 of 8 ==
Date: Sat, May 28 2011 7:18 am
From: "Phil Allison"

"Dave"
<
> Have a very small (5" screen) black and white TV that has lost its
> verticle hold.

** Verticle ???

It is not a faulty power transistor in the vertical output - or their
would be no pix at all.

> MIL would like it repaired if possible,

** MIL ?

Is there a fourth letter missing .....

> and kept in storage in case of another hurricane knocking out power and
> services like the last one did. Upon opening it up I see a power
> transistor (2SB834) with signs of overheating. My meter tells me that the
> E/B and B/C pn junctions are switching at .574 and .572 volts,
> respectively. Am I missing the mark, or does this sound a little low to
> others as well, as if the pn junctions have been damaged?

** Sounds normal to me.

> Its a few more minutes until my candy store opens, and several hours
> before I'll be able to get by there, but to me, this transistor souinds
> like a good candidate for replacement. Would appreciate hearing what
> others think, if anyone cares to comment. Otherwise I'll bide my time
> until I can prove the part one way or another. Just hope I don't have to
> order the damn thing and wait a week.

** Loss of vertical HOLD is far more likely to be a fault in the small
signal circuitry OR the power supply.

Can you still adjust the vertical frequency to get the picture viewable -
but rolling ?

The first thing to check is all the filter and coupling electros in the
vertical and PSU for the vertical.

You need an ESR meter or lotsa luck.

.... Phil

== 3 of 8 ==
Date: Sat, May 28 2011 8:36 am
From: "Michael A. Terrell"

Dave wrote:
>
> Have a very small (5" screen) black and white TV that has lost its verticle
> hold. MIL would like it repaired if possible, and kept in storage in case
> of another hurricane knocking out power and services like the last one did.
> Upon opening it up I see a power transistor (2SB834) with signs of
> overheating. My meter tells me that the E/B and B/C pn junctions are
> switching at .574 and .572 volts, respectively. Am I missing the mark, or
> does this sound a little low to others as well, as if the pn junctions have
> been damaged? Its a few more minutes until my candy store opens, and
> several hours before I'll be able to get by there, but to me, this
> transistor souinds like a good candidate for replacement. Would appreciate
> hearing what others think, if anyone cares to comment. Otherwise I'll bide
> my time until I can prove the part one way or another. Just hope I don't
> have to order the damn thing and wait a week.
>
> Thanks for any comments...

Is the TV capable of receiving digital TV? If not, you'll need a
converter and a way to power it.

<http://www.geeks.com/details.asp?invtid=HLT71&cat=TVS&cpc=APM> is a
digital battery powered 7" handheld TV with a whip antenna and the
charger for $50 + shipping. This would be a better solution. Just
charge the battery once in a while and it'll be ready in an emergency.

--
It's easy to think outside the box, when you have a cutting torch.

== 4 of 8 ==
Date: Sat, May 28 2011 8:47 am
From: "Dave M"

Phil Allison wrote:
> "Dave"
> <
>> Have a very small (5" screen) black and white TV that has lost its
>> verticle hold.
>
> ** Verticle ???
>
> It is not a faulty power transistor in the vertical output - or
> their would be no pix at all.
>
>> MIL would like it repaired if possible,
>
> ** MIL ?
>
> Is there a fourth letter missing .....
>
>
>> and kept in storage in case of another hurricane knocking out power
>> and services like the last one did. Upon opening it up I see a power
>> transistor (2SB834) with signs of overheating. My meter tells me
>> that the E/B and B/C pn junctions are switching at .574 and .572
>> volts, respectively. Am I missing the mark, or does this sound a
>> little low to others as well, as if the pn junctions have been
>> damaged?
>
> ** Sounds normal to me.
>
>> Its a few more minutes until my candy store opens, and several hours
>> before I'll be able to get by there, but to me, this transistor
>> souinds like a good candidate for replacement. Would appreciate
>> hearing what others think, if anyone cares to comment. Otherwise
>> I'll bide my time until I can prove the part one way or another. Just
>> hope I don't have to order the damn thing and wait a week.
>
> ** Loss of vertical HOLD is far more likely to be a fault in the
> small signal circuitry OR the power supply.
>
> Can you still adjust the vertical frequency to get the picture
> viewable - but rolling ?
>
> The first thing to check is all the filter and coupling electros in
> the vertical and PSU for the vertical.
>
> You need an ESR meter or lotsa luck.
>
>
> .... Phil

Phil is correct. The vertical output isn't likely to be the problem. Look
specifically in the sync separator and vertical oscillator areas for your
problem. The vertical oscillator isn't being locked to the vertical sync
pulses. That's why the picture is rolling.
Of course, the first thing to check is the power supply voltages and ripple
in those circuit areas. Clean power is essential to proper operation of any
circuit.
--
David
dgminala at mediacombb dot net

== 5 of 8 ==
Date: Sat, May 28 2011 8:08 pm
From: "Dave"

"Phil Allison" <phil_a@tpg.com.au> wrote in message
news:94ceigFhduU1@mid.individual.net...
>
> "Dave"
> <
>> Have a very small (5" screen) black and white TV that has lost its
>> verticle hold.
>
> ** Verticle ???

Whatever...

> It is not a faulty power transistor in the vertical output - or their
> would be no pix at all.

Yeah, hadn't thought of it that way. See comments further down.

>> MIL would like it repaired if possible,
>
> ** MIL ?
>
> Is there a fourth letter missing .....
>
Mother-In-Law. No fourth letter.

>> and kept in storage in case of another hurricane knocking out power and
>> services like the last one did. Upon opening it up I see a power
>> transistor (2SB834) with signs of overheating. My meter tells me that
>> the E/B and B/C pn junctions are switching at .574 and .572 volts,
>> respectively. Am I missing the mark, or does this sound a little low to
>> others as well, as if the pn junctions have been damaged?
>
> ** Sounds normal to me.
>
>> Its a few more minutes until my candy store opens, and several hours
>> before I'll be able to get by there, but to me, this transistor souinds
>> like a good candidate for replacement. Would appreciate hearing what
>> others think, if anyone cares to comment. Otherwise I'll bide my time
>> until I can prove the part one way or another. Just hope I don't have to
>> order the damn thing and wait a week.
>
> ** Loss of vertical HOLD is far more likely to be a fault in the small
> signal circuitry OR the power supply.
>
> Can you still adjust the vertical frequency to get the picture viewable -
> but rolling ?
>

Yes, but the picture is only half the size of the screen at that point.
Attempts to adjust the vertical hold so as to enlarge the picture result if
more rolling. The 100K pot has to be maxed out to make it stop, and once it
is no longer totally maxed it starts rolling again. Thinking of stuffing
another 20K resistor in there to see if that changes anything...

> The first thing to check is all the filter and coupling electros in the
> vertical and PSU for the vertical.
>
> You need an ESR meter or lotsa luck.
>
Guess I'll need lotsa luck. What does an ESR meter actually measure,
pray tell?

Thanks again. Have been running all day and am just now coming to the end
of it all.

Dave

>
> .... Phil
>
>
>
>

== 6 of 8 ==
Date: Sat, May 28 2011 9:05 pm
From: "Phil Allison"

"Dave"
"Phil Allison"
>
>> The first thing to check is all the filter and coupling electros in the
>> vertical and PSU for the vertical.
>>
>> You need an ESR meter or lotsa luck.
>>
> Guess I'll need lotsa luck. What does an ESR meter actually measure,
> pray tell?

** It will tell you if an electro cap has or is about to die of old age.

Does this by measuring its internal resistance or ESR independent of actual
cap value in microfarads.

ESR = Equivalent Series Resistance.

http://en.wikipedia.org/wiki/Equivalent_series_resistance#Capacitors

.... Phil

== 7 of 8 ==
Date: Sat, May 28 2011 9:59 pm
From: Ken

On Sun, 29 May 2011 14:05:03 +1000, "Phil Allison" <phil_a@tpg.com.au>
wrote:

>
> "Dave"
> "Phil Allison"
> >
> >> The first thing to check is all the filter and coupling electros in the
> >> vertical and PSU for the vertical.
> >>
> >> You need an ESR meter or lotsa luck.
> >>
> > Guess I'll need lotsa luck. What does an ESR meter actually measure,
> > pray tell?
>
> ** It will tell you if an electro cap has or is about to die of old age.
>
> Does this by measuring its internal resistance or ESR independent of actual
> cap value in microfarads.
>
> ESR = Equivalent Series Resistance.
>
> http://en.wikipedia.org/wiki/Equivalent_series_resistance#Capacitors
>
> .... Phil

A good one
http://www.peakelec.co.uk/acatalog/jz_esr70.html

== 8 of 8 ==
Date: Sat, May 28 2011 11:19 pm
From: "Phil Allison"

"Ken"
"Phil Allison"
> "Dave"
>> "Phil Allison"
>> >
>> >> The first thing to check is all the filter and coupling electros in
>> >> the
>> >> vertical and PSU for the vertical.
>> >>
>> >> You need an ESR meter or lotsa luck.
>> >>
>> > Guess I'll need lotsa luck. What does an ESR meter actually measure,
>> > pray tell?
>>
>> ** It will tell you if an electro cap has or is about to die of old age.
>>
>> Does this by measuring its internal resistance or ESR independent of
>> actual
>> cap value in microfarads.
>>
>> ESR = Equivalent Series Resistance.
>>
>> http://en.wikipedia.org/wiki/Equivalent_series_resistance#Capacitors
>>
>
> A good one
> http://www.peakelec.co.uk/acatalog/jz_esr70.html

** Looks very nice.

Such ESR meters can also measure the ESR of cells, both rechargeable and
non-rechargeable types -the very low test current means they can check
Lithium button cells too.

The ESR of non-rechageables is good guide to remaining capacity - far
better than voltage is.

The ESR of a NiCd or NiMH cell is a good guide to its heath and ability to
deliver high currents.

Egs:

AA alkaline = 0.1 ohms new, rising to about 2 ohms at end of life.

AA carbon/zinc = 0.5 ohms new, rising to 5 ohms at end of life.

AA NiCd or NiMH = 0.03 ohms new, rising to 0.5 ohms at end of useful
life.

9V volt alkaline = 0.8 ohms new, rising to 10 ohms at end of life.

Lithium button cell ( ie CR2032 ) = 10 to 15 ohms new, rising to 50 ohms
at end of life.

.... Phil

==============================================================================
TOPIC: `HOT SEXY PHOTOS&VIDEOS****
http://groups.google.com/group/sci.electronics.repair/t/c5c6ce78701614f3?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, May 28 2011 7:18 am
From: SRAVANTHI LOVE

FOR GOOD STUDY MATERIAL
http://studymaterialforu.blogspot.com

KATRINA KAIF IN BEAUTIFUL RED DRESS
http://southactresstou.blogspot.com/2011/05/katrina-kaif_22.html
GOOD LOOKING DEEPIKA PADUKONE
http://southactresstou.blogspot.com/2011/05/deepika-padukone_22.html
AISHWARYA RAI UNBELIVABLE PHOTO
http://southactresstou.blogspot.com/2011/05/aishwarya-rai.html
ANUSKHA IN A BEAUTIFUL SAREE
http://southactresstou.blogspot.com/2011/05/anushka-shetty.html
SEXY TAPSEE IN VEERA
http://southactresstou.blogspot.com/2011/05/tapsee.html
KAJAL IN BEAUTIFUL BLACK SAREE
http://southactresstou.blogspot.com/2011/05/kajal-agarwal.html
SNEHA SPICY PHOTOS
http://southactresstou.blogspot.com/2011/05/sneha.html
NAMITHA HOT PHOTS
http://southactresstou.blogspot.com/2011/05/namitha.html

==============================================================================
TOPIC: Vettel: I don't want my girlfriend at pit
http://groups.google.com/group/sci.electronics.repair/t/58fc2669d82cf348?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, May 28 2011 12:33 pm
From: Garinot Chantal

The reigning F1 champ Sebastian Vettel doesn't want his girlfriend,
Hanna, at the pit during Grand Prix.
- I have nothing against it in principal that women follow the race at
the circuit. Although with my own girlfriend it's a bit different. You
have to draw the line somewhere. If my girlfriend were at the pit, I
would be compelled to take care of her, and then I couldn't focus on
my job learn more www.racingnewsflash.com

==============================================================================
TOPIC: Wall Warts
http://groups.google.com/group/sci.electronics.repair/t/de407a5056a54ee0?hl=en
==============================================================================

== 1 of 1 ==
Date: Sat, May 28 2011 1:38 pm
From: Jim Yanik

Jeff Liebermann <jeffl@cruzio.com> wrote in
news:2ag0u6hqsttr5ri4j5ogvgkosj7ihhlseu@4ax.com:

> On Thu, 26 May 2011 12:51:48 -0500, Puddin' Man
><puddingDOTman@gmail.com> wrote:
>
>
>>>>The + side measures 3 ohms.
>>>
>>>Ok. There may be a diode inside the base. Try reversing the leads on
>>>the ohms-guesser and see if it acts like a diode.
>>
>>Measures infinite ohms when reversed.
>
> It's a diode, with no series resistor. That presents a problem.
> Without some form of current limiting, the voltage of the xformer will
> need to be VERY carefully controlled to keep from overcharging the
> battery. I will swear there's a resistor or charge controller
> somewhere in the system, but I can't tell where from here.

the internal impedance of the transformer itself may be the current
limiter. That's the way it was in a B&D VersaPack NiCd charger I have.

>
>>I'm 'fraid you'll have to elaborate on this last. And, what is "C" in
>>.1C?
>
> Sorry. C is the current rating of the battery in ampere-hours. A
> typical NiCd pack, full of AA cells will have a rating of about 750
> ma-hr. NiMH would be around 1200 to 2200 ma-hr.

Just a FYI,I have some Everready NiMH AA cells rated at 2350 mAH(bought at
Wal-Mart),and saw some no-name 2800 mAH AA cells for sale on Ebay.

--
Jim Yanik
jyanik
at
localnet
dot com

==============================================================================
TOPIC: microwave oven stopping prematurely, repairable?
http://groups.google.com/group/sci.electronics.repair/t/a4366967d76451a5?hl=en
==============================================================================

== 1 of 2 ==
Date: Sat, May 28 2011 9:17 pm
From: tin6150

Hello folks, happy Memorial Day weekend to you all!

My microwave is acting erratic, maybe you can help me see if it is
repairable? It can heat water, but tends to shut downs prematurely.

I have read this repair faq
http://www.repairfaq.org/sam/micfaq.htm#micsaf
but didn't find answer to my problem.

One evening I was cooking a frozen dinner, a chicken pot pie with a
mesh for browning at the top of the paper container. It is said to be
microwave safe. I followed instructions exactly. But maybe 3 minutes
into the nuking, there were a few spark, so I pulled the power cord as
quickly as I could. There were some burn smell, which lingered even
after a week of non-use. The microwave oven was clean, no spill over
or splatter when I started nuking the pot pie. I did not leave a fork
in there either.

The microwave in question is a panasonic inverter system, 1200 W.
manufacture date is 2002.

Currently, all electronics seems to work fine, touch pad works, clock
runs, timer works. no visible damage. No paint problem from the
spark. I tried to heat a cup of water for 35 seconds, and microwave
just shut off automatically after some 15-20 seconds (but clock panel
still running, so the electronics seems to have shut something down.
No error indicator of any sort that I can see).

If I set power to 50%, then it will heat the water for 50 seconds to
completion. water temperature is very warm to the touch. If I set
power to 10%, then it will heat for more than 70 seconds to
completion.

Maybe eventually at more than 50 seconds even at the 50% power, it
might shut off automatically when something gets too hot? I am not
sure if I want to try it if microwave isn't really going to be fully
functional anyway.

It is likely cheaper to just buy a new one, but as an
environmentalist, I just hate to waste appliance that can otherwise
work :)

Much thanks in advance for any advices.
Tin

== 2 of 2 ==
Date: Sat, May 28 2011 10:32 pm
From: mike

tin6150 wrote:
> Hello folks, happy Memorial Day weekend to you all!
>
> My microwave is acting erratic, maybe you can help me see if it is
> repairable? It can heat water, but tends to shut downs prematurely.
>
> I have read this repair faq
> http://www.repairfaq.org/sam/micfaq.htm#micsaf
> but didn't find answer to my problem.
>
> One evening I was cooking a frozen dinner, a chicken pot pie with a
> mesh for browning at the top of the paper container. It is said to be
> microwave safe. I followed instructions exactly. But maybe 3 minutes
> into the nuking, there were a few spark, so I pulled the power cord as
> quickly as I could. There were some burn smell, which lingered even
> after a week of non-use. The microwave oven was clean, no spill over
> or splatter when I started nuking the pot pie. I did not leave a fork
> in there either.
>
> The microwave in question is a panasonic inverter system, 1200 W.
> manufacture date is 2002.
>
> Currently, all electronics seems to work fine, touch pad works, clock
> runs, timer works. no visible damage. No paint problem from the
> spark. I tried to heat a cup of water for 35 seconds, and microwave
> just shut off automatically after some 15-20 seconds (but clock panel
> still running, so the electronics seems to have shut something down.
> No error indicator of any sort that I can see).
>
> If I set power to 50%, then it will heat the water for 50 seconds to
> completion. water temperature is very warm to the touch. If I set
> power to 10%, then it will heat for more than 70 seconds to
> completion.
>
> Maybe eventually at more than 50 seconds even at the 50% power, it
> might shut off automatically when something gets too hot? I am not
> sure if I want to try it if microwave isn't really going to be fully
> functional anyway.
>
> It is likely cheaper to just buy a new one, but as an
> environmentalist, I just hate to waste appliance that can otherwise
> work :)
>
>
> Much thanks in advance for any advices.
> Tin
is the cooling fan running?

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