User:Deriss
From CPCWiki - THE Amstrad CPC encyclopedia!
Bought a 6128 from eBay and its not working ? Then read on..
Firstly, make sure your 5v power supply and monitor are working ok. (You'd be surprised...)
The most common fault is probably someone having plugged a 12v PSU into the 5v socket.
This usually fries some or all of the ram (memory) and may sometimes damage a few ceramic capacitors along the way.