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

SiriusHardware · 8th Oct 2021, 12:05 pm

If the RAM TEST ROM is starting up every time now, it may be worth swapping the MROM in just to see what that does now as you have replaced a couple of things since you last tried it.

If it still doesn't work at all we'll stick with the RAM TEST EPROM for now as that does not depend on working RAM to be able to run, whereas MROM does.

8th Oct 2021, 12:05 pm	#230
SiriusHardware Dekatron Join Date: Aug 2011 Location: Newcastle, Tyne and Wear, UK. Posts: 11,575	Re: Sharp MZ-80K help needed on repair If the RAM TEST ROM is starting up every time now, it may be worth swapping the MROM in just to see what that does now as you have replaced a couple of things since you last tried it. If it still doesn't work at all we'll stick with the RAM TEST EPROM for now as that does not depend on working RAM to be able to run, whereas MROM does.