Using Grid-test, buttons light up while pressed. Except one quadrant (lower-right) which does not light up.
I checked a power supply that I had plugged in while trying to get it up and running and the polarity was reversed. So that probably adds a whole set of possibilities for what could be going on. I’m super bummed out to find that out.
Any help is appreciated on what I can do to find out if there was damage done from that.
Photo attached. I don’t recall the year exactly, somewhere around 2010-2011 I think.