Great post G-P-E.

I have random reset issues on my TZ and after reading a lot about it (5V problem - bridge rectifier, caps..) I measured the voltages on 5V test point on power board and CPU board. On power board I have full 5.0V and 4.93V on CPU board which is enough (or should be). CPU is resetting at about 4.85V. I tried pressing both flippers and voltage stays the same.
What I would like to know.. is it possible that bridge rectifier gets too hot because I don't have the original heatsink on it (got it like that) and is dropping the voltage instantly?

Hot lady on a bridge and cold bridge rectifiers is all we need

I know they get very hot, but I would like to know if too hot means voltage drops that are causing resets.
And when it resets.. it can reset once again or twice in a second.
Without pressing any buttons!