MZ 80K repair project

S_U_C
Posts: 38
Joined: Sun Feb 17, 2019 6:41 pm

Re: MZ 80K repair project

Post by S_U_C »

Sounds like the horizontal synch has failed.
Check test points 13 to 21 on the video board with an oscilloscope, ( see page 40 of the MZ80K Service Manual) and compare with traces on pages 19/20.
ozzybetts
Posts: 7
Joined: Sun May 31, 2020 11:33 am

Re: MZ 80K repair project

Post by ozzybetts »

hlide wrote: Sat Jun 13, 2020 4:23 pm Sorry, that's beyond my skills.
Not at all; thank you for your support so far. Very much appreciated
S_U_C wrote: Mon Jun 15, 2020 10:06 am Sounds like the horizontal synch has failed.
Check test points 13 to 21 on the video board with an oscilloscope, ( see page 40 of the MZ80K Service Manual) and compare with traces on pages 19/20.
I don't currently have one and have never used one... :) , but am very intrigued to give it a go!
Do you think this would this be an appropriate purchase?
https://www.amazon.co.uk/Digital-Oscill ... 6286376031
hlide
Posts: 508
Joined: Thu Jan 25, 2018 9:31 pm

Re: MZ 80K repair project

Post by hlide »

I have this one ; https://www.amazon.fr/Hantek-oscillosco ... 700&sr=8-5

You can have up to two analogical signals and up to 16 digital signals recorded through USB on your PC and displayed on you PC screen.
hlide
Posts: 508
Joined: Thu Jan 25, 2018 9:31 pm

Re: MZ 80K repair project

Post by hlide »

Sorry the previous one is WITHOUT 16 digital signals. The right one with 16 digital signals is https://www.amazon.fr/Hantek-6022BE-Osc ... =hi&sr=1-4
Gary C
Posts: 5
Joined: Mon Sep 21, 2020 10:35 am

Re: MZ 80K repair project

Post by Gary C »

Have you made any strides ?
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