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Sharp MZ-80A display problem

centrespot

New Member
Joined
Apr 2, 2011
Messages
9
Has anyone come across and maybe fixed a problem to do with the display.

I have a problem with the vertical on my unit, my displayed characters are all on a single green horizontal line.

I can see that the cursor moves when typing and the delete key clears the line.

I have done lots of tests and am going round in circles, I am not sure what circuit or voltages to test for.

Can anyone help?
 
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