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Spec-chum · 8th May 2021, 1:56 am

Keep in mind when doing tests entering commands via the keyboard, these old Sinclair's do suffer with the common fault of membrane failures. So test results might be misleading.

8th May 2021, 1:56 am	#8
Spec-chum Tetrode Join Date: Mar 2019 Location: Grantham, Lincolnshire, UK. Posts: 79	Re: Sinclair ZX81 AKA door stop Keep in mind when doing tests entering commands via the keyboard, these old Sinclair's do suffer with the common fault of membrane failures. So test results might be misleading.