The Sinclair QL Forum

Hi,

Last night I carefully took mdv1 apart and cleaned everything - squirty air for the electronics and isopropyl alcohol soaked cotton bud on the tape head.

The squirty air had no effect but full marks to Martin Head for his suggestion about invisible dirt. There was a tiny - and I mean really ...

Hi Tobias,

Thanks. I'll follow your advice and explore the ULA and r/w head. I agree with you that it's odd that it happened as the cartridge broke. I wonder if too much current briefly flowed through the ULA. I'm comfortable with electronics - I spent the afternoon reading the QL Service Manual. I ...

Hello Chr$,

When I try to format a cartridge I know to be good (one that I formatted from a different batch earlier in the day), unfortunately I get the same behaviour. I'll test the 7805 and the electrolytic capacitors this afternoon. I do wonder if, when the cartridge lost its pad and seemed to ...

Hello all,

I've been reading the forum for a long time but haven't needed to post until now. Yesterday I was copying some old programmes from microdrive cartridges I had found in a box to disk. All was going well with both microdrives on my QL working normally (as they have done since I got it in ...