Amstrad CPC 464 repair

I bought this CPC computer in a job lot a while ago but only just got around to looking at it. The main reason I dug it out was to play with my new toy, a ABI Chipmaster Compact not to be confused with the newer but pretty much the same Professional model. This thing will test TTL logic, the majority of old RAM chips and certain CPUs, very handy.

First thing I had to do was find a suitable power brick in my stash, the CPC464 requires 5v 2amp regulated since there's no regulation on motherboard itself.

All I got was a black screen, after inspecting the motherboard I could see the video output socket had some cracked / dry solder joints. Reflowed and retested, still a black screen but the TV was picking up a signal this time. The Z80 cpu is socketed so I pulled it and put it in the chipmaster.

It failed so I replaced the CPU, now I was getting a blue / green screen with vertical lines. I forgot to photograph this but I suspected the ram as it looked to be running as the lines on screen were changing and moving a little.

The first ram I pulled tested fine but the second one did not.

A fully working CPC 464, and now time to test Rainbow Islands as it's the only game I have for it.