UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Sharp MZ-80K help needed on repair

pudwink · 25th Sep 2021, 9:38 pm

With the ram test eprom I got it through the sharp MZ Facebook group and apparently the guy who gave it me says (the upper left digit should progress from step 0 to 3 then reload he says it seems to be stuck and could be an issue with VSYNC polling) whatever that means.

25th Sep 2021, 9:38 pm	#132
pudwink Pentode Join Date: Jan 2011 Location: Nottingham, Notts. UK. Posts: 207	Re: Sharp MZ-80K help needed on repair With the ram test eprom I got it through the sharp MZ Facebook group and apparently the guy who gave it me says (the upper left digit should progress from step 0 to 3 then reload he says it seems to be stuck and could be an issue with VSYNC polling) whatever that means.