Re: Sony XBR65X900c backlight sections cycling

Here are some pictures of the old backlight: [url]https://imgur.com/a/GkB1kWW[/url]
I may have messed them up during removal, as some appear to be snapped off. As you can see, these are LEDs mounted 90° and backed with a gasket. The replacement I bought uses a continuous peice of aluminum with surface-mount LEDs. They seem just as bright, and the pattern of flashing is exactly the same as before.

I did ground the BL_ERR pin via re-pinning to pin 9, resulting in no problem being reported. There is an LD_ERR pin...

Good afternoon,

A couple of months ago, I picked up this TV for $25 because it wouldn't turn on. The owner said it was sitting in storage for a year, during which the issue developed. I thought it a good upgrade to my ST50 plasma since it's a 4K HDR TV capable of passive 3D. It's a near top-of-the-line model for 2015 (although this one was manufactured in Feb 2016 right before it was replaced) and is very thin thanks to a bottom-lit panel.

I got it to turn on by re-pinning a connector so that the BL-ERR pin went to ground. However, this left another problem. The TV...

Re: Panasonic TC-P65ST50 plasma in protection mode after incident

The SS board arrived today. I installed it and all is going well. I also ordered one of the official Panasonic part number screw packs, but when I got them they were way longer then the existing ones. I didn't want to take the chance on breaking the panel, so I put in the old screws. The new board has very little buzzing so I'm pretty sure it was actually caused by the coils going bad, which is another common failure for these TVs later on.

Thanks so much again for your help. You really saved me a big...

Re: Panasonic TC-P65ST50 plasma in protection mode after incident

I've been looking on eBay for replacement boards, and I found by searching the model number that there are varying prices for the same model number (TNPA5648) board with a different "order number" stamped on. Mine is AE and other P65ST50 boards are also AE. Some P60ST50 boards are AF and some are unmarked. The boards from the P60GT50 are usually AB, and I have also seen an A3. I should generally assume that this order number means no interchange, correct? The AE seems to be the most expensive.
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Re: Panasonic TC-P65ST50 plasma in protection mode after incident

I unplugged both the power cable and the ribbon cable going to the A board and plugged in the TV. When turned on, it showed a dim, purple image of the no signal screen. I assume this means the SS board is bad then, I should be ordering one soon.

Re: Panasonic TC-P65ST50 plasma in protection mode after incident

I took the back off again and found that what I touched was the SS board. I unplugged it and the blink code changed to 8. I then plugged it in and unplugged the SC board, and the blink code went back to 3.

I would normally assume that the blink code not changing when unplugging a bad component would mean that the component is indeed bad, but I think I understand what you are saying. With the power going to SS, the main board can detect a fault, whereas with power cut it detects only a lack of communication...

Re: Panasonic TC-P65ST50 plasma in protection mode after incident

Thank you for the reply. I found an SC board on Ebay for a price I would be willing to pay to fix the TV. Perhaps I will peruse some guides to see if there is a way to confirm the failure.

Hello everyone! I picked up this 65" ST50 plasma TV for $80 on Facebook marketplace two weeks ago. I have the basic electronic knowledge of a teenage computer geek, having assembled laptops and PCs and messed with soldering and software.

This afternoon I decided to disassemble it to mitigate a buzzing noise. This is a well known issue for this TV ever since they were new. The popular solution is to replace the loose internal screws for ones with lock washers, preventing any future buzzing. I figured that I could just fully loosen and tighten all of the screws securing the...

Re: New Members - please post your introductions here

Hello everyone, my name is Max. I have come across this forum a few times but this time I need it for a Panasonic plasma I picked up.