Removing the back panel was the first step.
Inside, you can see the four main boards. The power board on the bottom, processor board on the top, and Y and Z sustain boards on either side.
Removing the support beam was critical, as both the Y-SUS and power boards were connected to it.
Getting the support beam out of the way was a time-consuming process.
Lots of screws. I ended up putting most of them back.
The suspect Y-SUS board.
My replacement board, ordered from eBay.
One of the many ribbon cables and connections I had to carefully remove.
More connections on the Y-SUS board.
Yet another tiny cable to watch out for.
With the new board inserted, I tilted the set back upright to test it.
These screws have to go back in there. Now, if I only remembered which one was which...
An HDMI input via a laptop worked, surprising no one more than me.
Hmmm...not really sure where these extra screws were from...
The only tool I used during the entire process.
Putting the cover panel back on was one of the final steps.
Reattaching the back panel of the TV.
A final successful video test, via HDMI.
Does anyone want a blown Y-SUS board from a five-year-old plasma?