Re: Panasonic P42G20ES
Thank you.
I wanted to pull those out this weekend, but ended up working on the diecast which I did figure out. So I will return to this very soon.
Mtgtnt
Member
Last Activity: 08-04-2015, 12:29 AM
Joined: 11-16-2014
Location: Bratislava
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Re: Panasonic P42G20ES
Will check all those you listed.
panasonic_tx-p42g20e_es_tx-pf42g20s_tx-pr42g20_chassis_gpf13de
This pdf do?...Leave a comment:
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Re: Panasonic P42G20ES
Yes, it was shorting across K-A.
While I am pulling these from the new board to test and from the old board for possible replacements, should I be looking for anything else?Leave a comment:
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Re: Panasonic P42G20ES
Here is a list of "Q" and "D" that are shorted:
Q661
Q621 20ohms
D641
D642Last edited by Mtgtnt; 01-09-2015, 05:00 AM.Leave a comment:
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Re: Panasonic P42G20ES
I am back.
Replacement SM board here.
Installed everything, 7 blinks.
Did resistance check on P board, all good.
Removed SC20, changed to 6 blinks.
Isolated SM board, jumped SC50.
Replaced SC20, back to 7 blinks.
LED D583 does light on this SC board where previous board did not.
But I'm guessing that this SC board is also no good.
Anyone have a step by step on how to find what is wrong with either SC board or do I just try and get a refund?Leave a comment:
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Re: Panasonic P42G20ES
I was able to talk to a local tech back home about the TV (old neighbor that been in the radio and tv repair for over 30 years). He said that it is possible that a short happened on the SM board and that fried the SC board. With the old boards still connected, the short that was created in the SC board kept the SM board from completely frying.
He asked if I isolated the SM board (SC41/42/46) with all screws in place while the old SC board was still in the TV. Since I did not he cannot say that the short was started in the SM board.
...Leave a comment:
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Re: Panasonic P42G20ES
So in this step,
"Yes, connect board up, jumper SC50 on SC board, the TV should turn on without a picture and no error codes. (green solid LED)
That will confirm it is not tripping an error, should then be ok to hook buffers to board."
I should have had the 3 connectors also connected to the buffer board and the jumper on SC50?
If so, lesson learned the hard way.
...
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Re: Panasonic P42G20ES
I jumped SC50, turned on the tv. No error code then poof, buffer board went up in smoke. SC41/42/46 were not connected. But I did have buffer board screwed in.
Guess im now looking for replacement SM board. SC board is fine.
This will have to wait until after Christmas....Last edited by Mtgtnt; 11-19-2014, 12:06 PM.Leave a comment:
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Re: Panasonic P42G20ES
Thank you both for the help. Once the replacement board gets here, I will let you all know how it goes.
Should I test without SM board hooked up first?Leave a comment:
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Re: Panasonic P42G20ES
Unfortunately it doesn't. But it does display 000 for closed circuit.Leave a comment:
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Re: Panasonic P42G20ES
I have finished testing all pins of SM41/42/46. All were out of range except SM41 pin 4 and SM42 pin 2. Those were exactly 220k.
Some took a while to go out of range, while most were oor right away.
[url]http://youtu.be/NQtSXVgTUIg[/url]Re: Panasonic P42G20ES<br /> <br />...SXVgTUIg[/url]Leave a comment:
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Re: Panasonic P42G20ES
I have tested the SM board pins 1 and 5.
My meter only has 2M-Ohm check so not possible to see the 4M-Ohm resistance.
When testing Pin 1, reading started around 900K and moved past the 2M limit in less then 2 seconds.
When testing Pin 5, reading started around 200K and moved past the 2M limit but at a slower rate. It took around 5 seconds.
I did a second test but both read Open right away so I let it sit for a few minutes before testing again. Results were exactly the same.
Also to note that...Leave a comment:
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Re: Panasonic P42G20ES
I am an expat from US. Been here since Feb 2006.Leave a comment:
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Re: Panasonic P42G20ES
Perfect. As soon as I have all these tests done, I will post the results. May take me a little while as its lunch time and have to deal with making lunch for family. (National Holiday today)Leave a comment:
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Re: Panasonic P42G20ES
Great! Part paid for and on its way.
How do I go about doing a resistance test on the P-board?
Been a long time since I did this and all I have is a multi-meter.Leave a comment:
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Re: Panasonic P42G20ES
removed....Leave a comment:
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Panasonic P42G20ES
Hello everyone.
Family members Plasma decided to stop working and they took it to a technician that told them it would be 400 Euro to repair. I told them I will look at it even though I haven't done any electronic work in 20 years I still figured I can grab the service manual and look up the code the power light was giving.
Now before I start replacing boards (not going to test mosfets and caps) I did a lot of reading here and through the manual. Here is my findings:
When turning it on, I get the relay clicks as normal and the green light flashes.... -
Re: New Members - please post your introductions here
Back in 94, I paid for a private electronics school. Was ready to return the second year after summer break but a few weeks before we were to return, we all received mail with horrible news. The school closed. Bankrupt!
I never finished my schooling, and most of what I learned has slipped away. Now I need the expertise of the experienced folk here to help me keep from spending money on something that may not be worth keeping.Leave a comment:
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