My television has been like this for one year, I am wondering what is going on with it. Here are some pictures.
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Last edited by ComputerGuy1; 04-01-2015, 05:12 PM. -
Re: Zenith Z50PG10 Red Horizontal line
Possibly faulty upper buffer board -
Re: Zenith Z50PG10 Red Horizontal line
Yes, I agree, bad top buffer.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: Zenith Z50PG10 Red Horizontal line
How can I check the buffer board. I know to look for bulging caps and discoloring around them.Comment
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Re: Zenith Z50PG10 Red Horizontal line
That would be the top y-buffer board.Comment
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Re: Zenith Z50PG10 Red Horizontal line
might want to pop the back off and put a photo of the boards in this. just did a search and get a couple oF LG variants, one of which is the notorious IPM boards of the 50PX5D era where the buffers have surface FETs that can blow.
All you can do is check for shorted outputs at the buffer connectors to the panel. I don't know these boards well enough without researching a fair bit. Someone else should have a fair idea.Comment
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Re: Zenith Z50PG10 Red Horizontal line
There's nearly no point; this fault can only be caused by a bad buffer as far as I know. But, if you want, here is a test you can do:
https://www.youtube.com/watch?v=51SZsfH60EYaPlease 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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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... -
Problem
This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached.... -
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 -
All left and right refers to looking from rear of TV (or looking from front with TV upside down)
- TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
- Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
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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
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