Re: Panasonic TC-P46ST30 Fixed SC Board But Still Have a Display Issue
Cant remember now - but the last 2 letters of the part number that are often not quoted do denote a different part! I found it on eBay UK....
richto
Member
Last Activity: 06-23-2015, 11:10 AM
Joined: 02-23-2015
Location: London
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Re: Panasonic TC-P46ST30 Fixed SC Board But Still Have a Display Issue
The SC board was actually from a slightly different model of TV. The first part of the part number was the same, but the subsequent 2 letters were different - and although it looked identical, it apparently was not. Inserting the correct SC board has resolved the issue.Leave a comment:
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Re: Panasonic TC-P46ST30 Fixed SC Board But Still Have a Display Issue
I have a basic LCD digital scope if that helps.
I have tried 2 SC board swaps - both of which were tested in a working TV before shipping to me, so I think it is unlikely to be the SC....Leave a comment:
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Re: Panasonic TC-P46ST30 Fixed SC Board But Still Have a Display Issue
No - how do I look at the test patterns?
Ribbon cable seems ok. I re-seated it to fix the 8 blinks....Leave a comment:
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Re: Panasonic TC-P46ST30 Fixed SC Board But Still Have a Display Issue
I have now ordered a replacement SS board to try that.
I can't see how a failure of the SC could take the SS board out too, but it seems the most likely cause...Leave a comment:
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Re: Panasonic TC-P46ST30 Fixed SC Board But Still Have a Display Issue
Petty sure the SC board is OK now, but it was originally short circuit. Can that impact the SS board? I have not touched SS so far. The picture is still just the same as the photo above.
nb - the 8 blinks above I think was caused by loose ribbon cable to SC20 - which is now fixed.
I think it must be the A board or SC / SS as the whole picture is effected, and any other board like SU, SD or C1 / C2 would only effect part of the screen I think.
Boards...Last edited by richto; 03-05-2015, 08:25 AM.Leave a comment:
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Re: Panasonic TC-P46ST30 Fixed SC Board But Still Have a Display Issue
OK I fitted another new SC board - and behaviour is similar - the panel powers up with a complete but washed out picture. I also got a spare PSU board and swapped that out, but also no change.
A couple of times after about 5-10 seconds the panel has powered off with 8 blinks, but now it stays on. Vsus is 215V and Ve is 135V and Vad is 70V
Any suggestions how to proceed? Thanks.
The original SC board was definitely completely short circuit so i'm wondering...Last edited by richto; 03-04-2015, 10:48 AM.Leave a comment:
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Re: Panasonic TC-P46ST30 Fixed SC Board But Still Have a Display Issue
Have pulled it now and am returning it for another SC board. If I get the same symptoms I will start here again....Thanks.Leave a comment:
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Re: Panasonic TC-P46ST30 Fixed SC Board But Still Have a Display Issue
Checked with a Fluke across the 2 heavy duty PSU connections to the SC board and it reads 204.8V. Turned the Vsus pot and it goes up to a maximum of about 209 volts with no change to the display. So I guess it's likely the SC board.Leave a comment:
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Re: Panasonic TC-P46ST30 Fixed SC Board But Still Have a Display Issue
OK, will check Vsus later today when i'm home. Should be about 205V? Is that DC?Leave a comment:
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Re: Panasonic TC-P46ST30 Fixed SC Board But Still Have a Display Issue
I have a similar but much more extreme picture issue after changing the SC board on a Panasonic TX-P50VT30B. The TV now powers up but the screen is very bright / washed out and the colours distorted. Any thoughts - is this a similar issue?...Leave a comment:
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