Last week a thin red horizontal line appeared on the lower part of the screen. Its there even with no input devices on. The set is 2 1/2 years old.
Any ideas?
Thanks!!
Any ideas?
Thanks!!
Attached Files
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Re: Panasonic TCP42S2 horizontal line
I'm going to say bad Y-buffer board or on this SU/SD or possibly SN board.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. -
Re: Panasonic TCP42S2 horizontal line
That's very digital and in blocks in appearance.
If me, first thing I'd try if you have a copy of the service manual is the vertical flip in the service menu and see if those coloured blocks go to the top of the screen.Attached FilesLast edited by tw2005; 08-07-2013, 02:41 AM.Comment
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Re: Panasonic TCP42S2 horizontal line
Thanks Tom and tw2005. I tried a new buffer which didn't help. The line moved with the picture in the mirror test so it looks like I need an A-board. I'll start looking.
Thanks again for your expertise!Comment
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Re: Panasonic TCP42S2 horizontal line
Yeah for me it was a symmetrical pattern as opposed to a continous line. If your into experimenting I wonder if it's being generated or possibly a faulty A board buffer ICs ?
TNPH0831 (version, no suffix) , TXN/A1LHUUS if SJ is correct. P42S2
IC9400,9401,9402 (underside) . TC74VHCT541AF (Texas Inst equivalent SN74AHCT541NSR) should only be about $1 ea,
Maybe you have some scrap boards with the same part fitted, they're not too hard to work with size wise.Last edited by tw2005; 08-08-2013, 08:52 PM.Comment
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Hi guys
I just started fixing 4k TV few months ago. so I am still learning a lot
I got this tv from friend complaint is ghosting or horizontal lines on image.
never saw the original symptom but I took the tv back home. the funny part is that after bringing to home, the tv worked fine no issue for 3 weeks.
then it started to show the ghosting white image.
I started using the tape method, but this tv does not have a T con board and it has only 1 ribbon cable from main board to the tv panel.
it has 3 thin small boards at the bottom of the... -
Hi to all,
I was given this TV, an entry-level 4K 50" set. Some have criticized its lack of contrast and relatively poor colour rendering, but for my needs, it's very decent.
I reset everything to factory settings, but this line keeps on fading in and out when watching a streaming channel from the Tizen firmware. Interestingly, it only happens when TV is warm, after about 1h45 of it being turned on.
Watching a movie from an external source doesn't trigger the line as easily (needs 2 hours), and from a normal viewing distance, is hardly noticeable. It...01-10-2024, 01:26 AM -
Hi guys I have this tv and in one side of the pannel it shows some line i also cleaned the camble notting, although I found an smd capacitor on the pcb (there's no tcon on this model) but I can't find the same model thanks02-20-2025, 02:52 AM -
Hi guys I have this tv and in one side of the pannel it shows some line i also cleaned the camble notting, although I found an smd capacitor on the pcb (there's no tcon on this model) but I can't find the same model thanks02-20-2025, 02:45 AM
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I recently obtained a Panasonic NV-HD100 VCR that I was hoping to use to transfer VHS tapes to computer. While the mechanics of the loading and handling mechanism seem perfectly fine, there are a couple of small issues with the picture.
Firstly, there is a very fine noise pattern all over the image. It's possible however that it would have looked better on an old CRT TV and the modern HDTVs are just showing it up better. If I turn the sharpness control right down, the pattern is suppressed but of course then the image is very soft; not what I want.
The second, and...
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