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eBay: ZX81 and Timex 1000s
Posted: Tue Apr 22, 2025 4:36 am
by David G
Several ZX81 for sale on eBay, including 50hz UK and 60hz USA/Canada machines:
Many Timex-branded ZX81s (for use with 60hz television)
Some already have a "comp mod". These I suppose will work in any country along with a composite video monitor and a suitable
9V DC power supply
eBay: Gorgeous ZX81
Posted: Tue Apr 22, 2025 4:52 am
by David G
69 GBP buy-it-now
Gorgeous Condition Sinclair ZX81 Refurbished + 16k Upgrade + Comp Mod Fully Working
what is the 15-pin connector on the side for? Is it possible that's for a composite monitor and the TV signal still works?
It has the final revision
649 ROM and the
early ULA 2C184E bit with the comp mod that's irrelevant
Re: eBay: ZX81 and Timex 1000s
Posted: Tue Apr 22, 2025 4:58 pm
by Moggy
I had a Zeddy with an identical socket on the side which in my case was used to connect to an external keyboard sold by Maplin, so would have thought this was for something similar.
Re: eBay: ZX81 and Timex 1000s
Posted: Tue Apr 22, 2025 6:47 pm
by David G
thanks Moggy
ZX81 Computer Lot: Bits and pieces
Posted: Tue Apr 22, 2025 7:40 pm
by David G
eBay: Sinclair ZX81 Computer Lot: Bits and pieces, w/keyboard, manuals, circuit boards out of Minneapolis USA current bid $31 USD
genuine ZX81 USA model
This one is tugging at me, but only for nostalgia reasons. Back in 82 my kit came with that exact issue of
Sync, an issue of
Syntax ZX80, and that
yellow Nanos reference card. I even had a Maxell tape like that at one point
also included: Dr. Dobbs Journal, Number 67, May 1982 page 48 "
Add Direct Video Output to Sinclair ZX81"
SINCLAIR ZX81 USA ISSUE ONE board
Looks to be kit-assembled judging by the unevenness of the soldering
Consider the
exposed AC transformer to be "parts", and instead use the included wall adapter
