Originally Posted by sealteamz6
f I have to replace the SC board I am unsure whether or not it is worth repairing the TV. The price of the SC board is $213 after I return the defective board. Not sure if I will have to pay sales tax from the Panasonic site being I am in WA and whatever shipping costs. Figuring final cost to replace the SC board would be about $250 but not more than $300. The SU/SD boards are like $80 to replace each. So that would probably be worth repairing the TV.
I'm surprised that Panasonic has the boards available at all. Soon after they stopped making Plasmas their supply of boards dried up (in 2014). BTW Panasonic Parts Dept boards are not new, they're factory refurbished.
But i would not buy a replacement board from Panasonic or anywhere else, you should consider having yours tested and repaired instead.
Here's my post with a list of Board Repair companies that AVSers have used, and there's good info in that thread too. With some companies you can send all the boards in and they'll test em, and repair just the one(s) that need it.
I am somewhat concerned of the issue reoccurring were I to replace the board. I am not sure what caused the issue or how I can prevent it happening again.
One thing that seems to cause board failure is loose board mounting screws. If you're TV buzzes and gets even louder on bright scenes, that's an indication that some screws are loose. After 7 years of virtually silent running, my 50GT50 started buzzing slightly here and there about 8 months ago, then one day it suddenly started buzzing so loud it was unwatchable. Knowing that loose screws cause buzzing, i removed the back and the SC board was the one making the noise. I checked the screws and sure enough they were quite loose. I snugged them down and the buzzing stopped. I then tightened every other screw i could find and a lot of them were loose. The TV was now silent again and is still silent today (it's on for 2-3 hours every night).
My co-worker has a 60ST30 that suddenly started buzzing loudly right before the warranty expired but he procrastinated for a few weeks until i urged him to call for service. Panasonic sent a technician who first tightened the SC board screws (they were loose) but that didn't fully quiet the buzzing, so he installed a new board from his van and the TV was silent once again (still silent today too). He told him that loose screws will stress the board and cause failure. He also replaced all the screws with the updated ones that don't come loose over time. I think Shop Jimmy still sells this kit (there's like 20 screws in the packet).
I've read many other similar stories from AVSers over the years so there's something to this loose screw thing.
Here's my post with a list of Board Repair companies that AVSers have used, and there's good info in that thread too:
Sigh now that I have been turned onto the idea of getting a new TV it sure is tempting but I am not sure I would want to drop $1800-$2000 on an OLED if I can have my current TV back and put up with that for another couple years at least. I wonder how much my ST60 would sell for.
If it's a 60" or 65" you might get $300-$400 from an informed Plasma enthusiast if it's in good shape and working properly.