what’s the harm of doing PCB(printed circuit board) for a long-time?

can i install POWER SWITCH CIRCUIT BOARD For SONY PSP SLIM 2000 on my PSP 3000?
They do look about the same.. so would it function normally if i install it on my psp 3000?

I was recently told the circuit board needed to be replaced in my outside ac unit. How much does one of those cost and also the repair man told me he bypassed the circuit board. What does that mean?

I am working on a design project for an engineering class and we are working on a heat exchanger for a circuit board that is currently cooled with cooling fins. We were asked to redesign this using liquid cooling, with something like a cooling plate with a refrigerant tube running through it. We also had the idea of just putting a box over the current fins and running the coolant through the fins. Any ideas on this, has anyone heard of something like this that they could point me at. Or just anything, thanks.

Trying to follow seris then parallel and back is confusing. Any help on line(utube type sites) or really good books?

I have recently gotten in the habit of taking off electronic components from motherboards, circuit boards, etc. and I want to know what the capacitance is of the capacitors I take off.

Any help?

What’s the relationship between PCB(printed circuit board) and IC?

http://www.pcbpartner.com

Can a spyder rt get a new board and if so what one and how much….