Hello, hello.
Yes, I am using a decent 12V DC adapter, not the 6V it came with.
I left it plugged in to warm up (under a blanket for good measure), and after about an hour, the screen changed, still garbled but with some numbers in the corner. Not only that but it makes piano sounds when I play it!
So, I'm wondering if this is another sign of capacitor plague: if the electrical properties change when the capacitors heat up, and then things start working.
Does anybody know if the surface mount capacitors *all* need to go? There are so many.
Thanks for joining me on this journey ?.?
Matt M.