Re: TC-P42C2 - Need advice
Lets hope that doesn't happen. Atleast if that's the case I can return the SN and SS back to ShopJimmy and sell the PDP.
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Re: TC-P42C2 - Need advice
Alright that's all the re-assurance I need to get ordering....
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Re: TC-P42C2 - Need advice
Looks like I'll be ordering the SS then. I'll let you know the outcome. It'll probably take a week or so.
Do you think the bad SS could be causing my 6 blink SOS? from the ERC?
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Re: TC-P42C2 - Need advice
Do you think the 15.5V on the VSUS 15V line might be a problem with my P-board or just within tolerance? I don't want to get a new SS just to have my P-board kill it again.
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Re: TC-P42C2 - Need advice
Just as reference these look like they would be exactly the IGBT's I would need.
[URL="http://www.mouser.com/ds/2/200/irg7ia19upbf-89228.pdf"]http://www.mouser.com/ds/2/200/irg7ia19upbf-89228.pdf[/URL]Re: TC-P42C2 - Need advice
Just as reference these look like they would be exactly the IGBT's I would need.
[URL="http://www.mouser.com/ds/2/200/irg7ia19upbf-89228.pdf"]http://www.mouser.com/ds/2/200/irg7ia19upbf-89228.pdf[/URL]
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Re: TC-P42C2 - Need advice
Would it be worth changing the IGBT's or just get a new SS? I could pick up a used SS on ebay for $30. In this case could it be more than 4 IGBT's, like I've read if something went wrong on a board it was probably caused by something else, personally would you change the IGBT's or just get a new board?
Edit: It looks like it would cost me about $20 for four IGBT's from Mouser. Used SS it is I guess. Hopefully it's not my P-board that shorted it. Would the IGBT's possibly also be my 6 SOS?Last edited by fyca; 10-21-2013, 10:40 PM.
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Re: TC-P42C2 - Need advice
Measured SS11 to ground - Shorted
SS3 to ground - Shorted
I'll take it back apart and see if anything is touching.
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Re: TC-P42C2 - Need advice
With only SS11 disconnected I get 6 blink SOS.
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Re: TC-P42C2 - Need advice
So now on to something new, I just removed my A-board and my SS to visually inspect both. Upon inspection nothing looks visually bad, but now I have a 10 Blink SOS. I took everything back apart and put it together again and I still have 10 Blink SOS. I don't know what happened. Also with SN2,SN20,SS11 disconnected and I test VSUS now it goes to 188.9V but dips 1/2 second before relay clicks off and I also get the 6 Blink SOS. Does this mean my P board is dead? Same thing with the 15V line dips before the relay clicks off.Last edited by fyca; 10-20-2013, 02:34 PM.
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Re: TC-P42C2 - Need advice
Vdata - 54.6V steady
TPSOS6 - Starts at 4.2V then drops to 0VLast edited by fyca; 10-20-2013, 01:15 PM.
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Re: TC-P42C2 - Need advice
As I was reading your thread on the X20 I saw that you test the ERC Mid, I do not know the procedure for testing that, although I did try to measure it with black lead on white wire at SN3 and red lead on the brown wire, both wires test at ~120v for both brown wires.
EDIT: After testing again with black lead on chassis ground, this happens on both brown wires, the voltage starts at 15V then goes to 119V then 121.2V then down to 105V.
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Re: TC-P42C2 - Need advice
I think the TPVAD is what is triggering the SOS, but I don't know why. My VSUS lines hold at 188.9 stable....
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Re: TC-P42C2 - Need advice
So my bro came by and helped me test some points.
TPSN1 - 60V not stable, switched between + and -
TP97 - ~ -120V switches between + and - drops to -104 after screen on
TP98 - ~-163V after screen on drops to about -80V
TPVSCN - -43V
TPSS1 - 121V after screen on drops to 105V
TPVe - 123.7V
TPVAD - -188.9V right before the relay clicks off it dips to around -178V then back up to -188.9V then the relay clicks off.
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Re: TC-P42C2 - Need advice
After testing again I guess I was counting the blinks wrong. I do get 6 blinks with SN2,SN20,SS11 disconnected.
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Re: TC-P42C2 - Need advice
So I retested this procedure and still get 7 blink SOS. Could it be a mis-diagnosis from my A-board? Also on my P-board I noticed that the 450V line filter cap is slightly bulged but not bulged enough to know for sure. Another thing I noticed is that when testing the VSUS I get 188.9V but after it shuts off the voltage drains off quickly, probably down to 6V in about 3 seconds, is that normal or maybe a sign of a bad cap? Then another thing that I noticed when testing voltage at TPVAD that maybe a tenth of a second before it shuts down...
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TC-P42C2 - Need advice
I will start at the beginning. I acquired this TV from a friend who said it no longer worked. Being technologically inclined I plugged it in to observe what its problem was. It turned on and displayed but it was not displaying a clear picture, rather just distortion, but when I pressed the menu button I could see parts of it on the screen. So I figured it would be an easy fix, after looking through all the forums here on BadCaps and AVS I did a couple of the tests and figured it was probably the P board. After a couple of weeks my brother came over and wanted to see what was wrong with it and...
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Re: New Members - please post your introductions here
I would like to introduce myself, My name is Tim, I go by Fyca pronounced as F-eye-ca. I am a self taught computer and electronics technician, no certs other than A+. I have been tinkering with electronics for about 17 years. I know a bit about electronics testing procedures and am very familiar with a DMM. I have fixed a few LCD tv's and am currently working on a Panasonic Plasma TC-P42C2, which you will find some of my posts soon.
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[URL="https://www.badcaps.net/forum/showthread.php?p=383065#post383065"]https://www.badcaps.net/forum/showthread.php?p=383065#post383065[/URL]Deleted post - made new post here
[URL="https://www.badcaps.net/forum/showthread.php?p=383065#post383065"]https://www.badcaps.net/forum/showthread.php?p=383065#post383065[/URL]
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