Newbie here!
I am trying to fix a Sharp MZ-800 with a weird problem. It boots fine to a blue screen but there is not text. It looks like the ROM is not working, but all the lines on the ROM chip seem to be working as expected.
I am quite familliar with repairing 8-bit computers (namely commodores) but this Sharp is a little bit unusual for me.
I have a scope and I am able to burn my own eproms.
Any help would be appreciated!
Thanks.
-Tuomas