Re: Panasonic 42' Plasma TC-P42x3
sw2056 (key3) is a momentary integrated on the A board
sw2056 (key3) is a momentary integrated on the A board
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Re: Panasonic 42' Plasma TC-P42x3
Ah guess since this is a cost-down version of other sets they omitted the main power on/off.
It was always a bit useless, it essentially only turned off the LED and reduced power consumption by maybe 10% in standby (0.35W vs 0.4W)Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Panasonic 42' Plasma TC-P42x3
Anyway, since modus have a big sale on, $50-60 (after 30% off) for A board repair
P board on Ebay for $55 N0AE5JK00006Comment
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Re: Panasonic 42' Plasma TC-P42x3
Even though the chart is not 100% for this, I'd say if the 3.2v is there then P board since the A is trying to start the PSU, if missing A board.
Could always try isolating the SN and SS but I'm not confident it's them especially if it was working then not after a spike.Comment
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Re: Panasonic 42' Plasma TC-P42x3
Wouldn't it throw an SOS code though?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Panasonic 42' Plasma TC-P42x3
Well you'd hope but you know with dead shorts on the PSu funny things happen like for example locked solid LED or 14 blinks .
The other thing is are we assuming S0,S1 are highs and not gnd which are switched? I know recently i made an assumption the K board LED was a high but turned out to be a low.
gut feeling this will be A board, just with 5v stby and relay clicks I wonder.
have a look at the 2011 chart, slide 33, does give the scenario of relay clicks, then expect A or P we can ignore K due to this setup.
best i can come up withComment
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Re: Panasonic 42' Plasma TC-P42x3
So what I'm getting is that it's a crap shoot at this point? Anything else I can do on this end to narrow it down?Comment
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Re: Panasonic 42' Plasma TC-P42x3
I'm confused and did not mean to insult anyone. I thought that you ruled out the 3.2v check from your dialogue with tom66 and that there was no certain method to isolate the fault to the A or P board, hence mentioning a toss up or crap shoot.Comment
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Re: Panasonic 42' Plasma TC-P42x3
4 mV on pin 1 when plugged in.Comment
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Re: Panasonic 42' Plasma TC-P42x3
best guess is A board and get it in to Modus whilst the sale is on if you want to continue down that path. If it turns out to be the P board, so be it. I've already provided some info on what's available and costComment
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Hi,
anyone able to provide the service manual for old plasma Panasonic TX-P42ST50E?
It turns off almost immediately (0~5 seconds after pressing the on/off button) and starts flashing the red diode 6 times.
I disconnected the left-hand side board (SC?, both the ribbon cable and the power cable to it) and also another ribbon going to bottom left board. Then the led signal is 8 flashes. According to service guide to another Panasonic plasma it would mean the left-hand side board is faulty. But I'm not sure it 100% applies to my model.
I checked that board for any obvious faults... -
Hi everyone!
I happened several times, in the search for help from the web, to consult this very interesting forum.
So I decided to sign up and I intend to participate actively by making available my knowledge and experience on the subject, I'm a new user but at the same time I'm old in the sense that I have 4 decades of experience in repairing and designing electronics but above all I'm a great passionate about the subject.
Having said that I come to the gist of my post on the forum as the title suggests.
For my passion for technology I'm now collecting several... -
Hello,
Stopped by this site trying to fix my parents Panasonic Plasma TV.
Model number is TH-50PZ85U
Power comes on and the red power light stays on solid.
Did a few checks like hold the power button on for 60 seconds, hold the - Volume while holding the menu button, no luck, still@ blank grey screen as the screen lights up very vague.
I also hear a few clicks.
I also think my parents said there was a thunderstorm and the TV failed after that.
Section 6 in the service manual talks about power and no screen,...10-30-2024, 10:09 AM -
My parents' Panasonic P42S30 died recently, and they asked me to have a look at it. I was able to identify the SN-board as the culprit, as it was shorted. After removing Q401, Q402, Q421 and Q422 the short was gone, so I replaced these components and that got the TV working again. However, when testing the tv a bit, I noticed quite bad pinkish sparkles on some colors. For instance the greyish bar on this forum seems to trigger it quite badly. I made a fullscreen test picture with only that color, with the below result.
There is about a 5cm high region at the top without any sparkles,... -
Hello, got a ST50 plasma TV for repair. No signs of life, not even blink codes. Opened it up to check the power supply, type MPF6914. Apparent issues from visual detection and measuring for shorts:
Diode type G972s6 - D101 with a short
Mosfet 06N90E - Q301 shorted
Fuse T5AH 250V - F103 blown
Diode D301 shorted
Relay DG1U-17VDC II - RL001 blown
I have not found a circuit diagram. Maybe someone here already dealt with a similar issue? Thanks for tips where else to check 😀...
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