First off, thanks for all the great info on this site. I had the fairly common problem of no screen, and was able to find the description of re-flowing the coil solder joints, and that problem was resolved. So now I have a picture, but it literally looks like someone poured black ink or paint from the top of the screen, (think the Sherwin Williams world logo). My biggest fear is somehow the screen got cracked, (and no idea how). Any thoughts from the folks out there?
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Re: LG 60PZ550 Plasma Screen Blotches
It's likely a Z-sustain fault or a loose connection.
Check ALL connections to the Z-sustain board, check the orange ribbons are FIRMLY seated in the connection blocks.
Probably not a cracked panel, they usually don't show any light when cracked (a few exceptions apply but only on Samsung & Panasonic panels)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: LG 60PZ550 Plasma Screen Blotches
I agree with Tom , i have not seen a cracked plasma screen that lights up.I only repair Panasonic plasma tv's! Currently owning a TX-P55VT50 and still searching for a ZT60!
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Re: LG 60PZ550 Plasma Screen Blotches
Thanks for the quick response. In checking the ribbon cable connection on the bottom of the board, I managed to break the latch. Any chance I can source this without getting the entire Z SUS. Also, looking on the web for the PN, none match what is in my set: EBR 73561701. This is what happens when I get in a hurry.Comment
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Re: LG 60PZ550 Plasma Screen Blotches
Can you show us a picture of what you broke?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: LG 60PZ550 Plasma Screen Blotches
Here you go...I managed to break one of the latch pins on the connector clamp that allows it to pivot up. Now there isn't any way to apply pressure to the ribbon to hold it in place. The 1st pic is the broken 1, and the second is the way it should look....Attached FilesComment
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Re: LG 60PZ550 Plasma Screen Blotches
Bugger... that's probably a custom part. You might be able to shim it down with some strong tape. But not sure.... otherwise that would be a board replacement component.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: LG 60PZ550 Plasma Screen Blotches
That would figure....any idea if there is a PN cross from the number above? I have not been able to source that PN. Thanks again.Comment
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Re: LG 60PZ550 Plasma Screen Blotches
Uhm , its not broken off? Sorry for my english but the small white parts that hold the black part in place are not broken?
The black part is easy to put back in as long as the the white part on the left and right are still in place and not broken off.I only repair Panasonic plasma tv's! Currently owning a TX-P55VT50 and still searching for a ZT60!Comment
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Re: LG 60PZ550 Plasma Screen Blotches
I've shimmed a few connectors like this, usually keyboard connectors for laptops but the same principle.
A piece of rigid plastic from discarded packaging, cut to the correct length and inserted will hold the ribbon cable in. A dab of hot glue either side or some tape over the top will hold it.Comment
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Re: LG 60PZ550 Plasma Screen Blotches
Thanks for the input folks. Moreno83, the black latch snapped an end off. diif, I'll try the plastic and glue trick. I'll let you know how it goes. Thanks again.Comment
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Hello everybody! Posting this in hopes somebody has some expertise that leads to a clear path of troubleshooting that saves me a lot of time!
My macbook has the flex cable problem, the one that prevents the screen turning on. Ive been dealing with this for the last 3 years. Last year it went dead and I managed to fix it following youtube tutorials. But my fix wasnt the best, the problem returned a month later. This week, it went dead again. I again tried to fix it.
This time the original cable broke too close to the screen, it can't be fixed without tearing the screen... -
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 -
Just had a customer bring in a M2 MBA A2681 that had had a screen replacement in April at another repairer. Since then, she has been getting intermittent kernel panics. It's an aftermarket screen, and of course it fails in diagnostics as the calibration hasn't been done. The error in the panic log is "No device added after powering on the rails".
It seems the original repairer has swapped the board and the screen to other MAC's, and said that it isn't a screen issue. From what I understand, by doing a quick search on Google, this is in fact a screen issue. The panic relates...07-31-2025, 08:37 PM -
My Panasonic Plasma model P55VT50 has started displaying "interference" on just the left half of the screen only (left when facing the screen). Sometimes it's concentrated in about the first 30 seconds after startup, then disappears. Other times it's fine at startup and then randomly does it later on. When it flashes the interference it's very quick and doesn't stay on the screen unless it flashes repeatedly in a row.
This image is a screen shot from a video I took. This is an example of the interference at its worst. Often the interference is much smaller...10-14-2022, 04:54 PM -
Hello everyone, I’ve just been given a Samsung UE55JU6800K smart tv as it had white spots on the screen due to the led lenses falling off. After refitting them & putting the tv back together I thought it was a nice easy fix for a free bedroom tv , then I tried it before screwing the back into place. I realised that the right side of the screen was darker than the other side, I removed the screen again as I thought the backlights had failed but they are fine.
I put the screen back in place & turned it back on . The screen seemed to be ok again but different screens on the same...
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