If you have a 48K (or 16K) ZX Spectrum that you aren't certain is in working order, watch this video BEFORE you switch it on.
August 2026:
ZX Spectrum Lower RAM Replacement Modules are on sale through ebay again. To buy, CLICK HERE.
ZX Spectrum Upper RAM Modules are also available again through ebay. To buy, CLICK HERE.
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Information about two circuits that can be used to improve the video output of ZX81 computers has been added to the Miscellaneous Projects page.
A number of other video presentations pertaining to Sinclair computers can be found here.
I often have a number of fully refurbished ZX Spectrum computers available to buy. Send me a message below to tell me what you're looking for.
I can sometimes offer a repair service for Sinclair computers and related equipment. I also sometimes undertake repair and servicing of other electronic items, especially audio equipment (domestic and professional). Please send a description of the item you would like to have repaired, below.
To ask a question about an item advertised for sale or about something you have bought through this site, please submit your enquiry below. Take great care to enter your e-mail address correctly if you want to receive a reply.