/vr/ - Retro Games

Anon with the Trinitron that needs punching to work here. (TL;DR: it'll turn on but then give out at random, either with a small light in the center or nothing at all and needs a punch for the electron gun to start. speakers work the whole time.)
I've discharged it (I hope) and taken some pics of just about every board I can see on the inside. I really just want to know where I should start looking b/c I can't find a schematic of this model (KV27S15) and while repairing cracked solder joints everywhere would be a great, I want to locate what's causing the issue first.
I don't expect any diagnosis from the attached pic I just want to know where to start looking.
Thanks in advance anons :)