Sinclair ZX80 / ZX81 / Z88 Forums

I bought this fantastic looking contemporary custom case-mod ZX81 on German eBay. The seller didn't really know for sure what it was but I suspected there was a ZX81 board inside, and there was (an issue 1 board with chips etc dated around week 30 of '81). Also inside was a dk'tronics 'Llamas' 4k gr...

It really was that simple in the end! Despite multimeter showing good connections, I suppose something must have been wobbly. I removed the wonky keyboard connector, re-soldered, fiddled around some more and all is ok now. Thanks.

Hello Rich, it's me, Chr$ from the QL forum (it wouldn't allow the $ here). I suspect I'll get that parcel from you any day now.

Hello, I have a ZX81 problem. Keys 1-5 do not work. Keyboard membrane works, and is new. Multimeter connected to the far left of the right k/b socket (the longer one) and to the far right of the left k/b socket (KB0) indicates continuity when button '1' is pressed, which is what it should do. It's a...

You know, usual thing. Kid of the 80s. I had, and still have, a great Uncle (great uncle as in cool, not great as in the uncle of a parent, just to clear that up). He was into tech and I got his hand-me-downs, simple as that. He got a new QL, so I got his ZX81 in about 1984/5. I had no way of saving...