Search found 4 matches

by kbjunkie
Fri Jun 24, 2022 8:40 am
Forum: Hardware
Topic: Problem with MZ80-A CRT
Replies: 7
Views: 3411

Re: Problem with MZ80-A CRT

Just a quick one to close this thread..

This issue was down to a bad uPC1301H. I replaced it with an H2 after modifying the shorter heatsink tab on the H2 variant, and after a little re-twiddling of the pots on the board, it's now working!

Thanks for all of the suggestions!

KbJ
by kbjunkie
Thu Jun 23, 2022 11:28 am
Forum: Hardware
Topic: Problem with MZ80-A CRT
Replies: 7
Views: 3411

Re: Problem with MZ80-A CRT

Hi Antxiko,

Are you talking about the biploar C2017 cap?

Thanks,

KbJ
by kbjunkie
Wed Jun 22, 2022 9:06 am
Forum: Hardware
Topic: Problem with MZ80-A CRT
Replies: 7
Views: 3411

Re: Problem with MZ80-A CRT

Thanks @mz-80a

Not sure what the heck is causing this issue - and like I said, my forte is really digital electronics..

Will just have to wait and see if anyone replies with any nuggets of info!

Cheers,

KbJ
by kbjunkie
Mon Jun 20, 2022 8:24 am
Forum: Hardware
Topic: Problem with MZ80-A CRT
Replies: 7
Views: 3411

Problem with MZ80-A CRT

HI All, My first post here - and thank you to the admin for activating my account! I have picked myself up an MZ80-A and have repaired the main board (just some faulty RAM IC's). That part is now working but I have an issue with the CRT. I have replaced all electrolytic capacitors on the CRT PCB - w...