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

SiriusHardware · 8th Oct 2021, 11:07 am

Another good call by Mark! So, what does the RAM TEST EPROM tell you about the state of the RAMs now, if you put it all back in? If it's running properly I think you should probably see the first character on the screen continually changing even if nothing else on the screen moves. (That character indicates which block of the RAM it is currently testing).

8th Oct 2021, 11:07 am	#228
SiriusHardware Dekatron Join Date: Aug 2011 Location: Newcastle, Tyne and Wear, UK. Posts: 11,587	Re: Sharp MZ-80K help needed on repair Another good call by Mark! So, what does the RAM TEST EPROM tell you about the state of the RAMs now, if you put it all back in? If it's running properly I think you should probably see the first character on the screen continually changing even if nothing else on the screen moves. (That character indicates which block of the RAM it is currently testing). Last edited by SiriusHardware; 8th Oct 2021 at 11:13 am.