Did you resolder some of those? It doesn´t look like being done in the factory.
It seems the missing ones were ceramic capacitors too. I would try 1 -10nF 50V, depending on the form factor. (Or, desolder one and measure the exact capacity.)

majestyk wrote on 2021-04-19, 17:12:

Did you resolder some of those? It doesn´t look like being done in the factory.
It seems the missing ones were ceramic capacitors too. I would try 1 -10nF 50V, depending on the form factor. (Or, desolder one and measure the exact capacity.)

Yes, I replaced around 8 or 9, but they didn't seem to be all the same when I tested them, though I could be wrong.

I have the board but I have no capacitor tester.
Some smd are brown- caps, others are grey- filters (I have 32.2 ohm reading on them).

Some you have resoldered are filters and not capacitors like the one on the lower right corner of the first circled missing part. Lower right to that one is a filter too.
Top left is filter, not a capacitor.

Second component is a capacitor.

I'll take a high res pic tomorrow.

Highlighted are inductors (filters).

Nexxen wrote on 2021-04-20, 13:29:

Highlighted are inductors (filters).

Thanks, I took off several capacitors and they all tested the same. Sadly replacing the missing spots with the donor capacitors didn't get the board working, debug code A1. I'll painfully swap them to the other board and try, though it is in far worse shape overall.

Can you post some higher rez pictures of the whole motherboard front and back?

If you put a capacitor where an inductor should be, no current is crossing and no signal is going.
Unless you soldered inductors where I highlighted you aren't going to see a POST, if that's the issue.
Let's keep being positive 😀