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.
March/April 2026:
A few ZX Spectrum Lower RAM Replacement Modules are on sale through ebay. These are mainly intended for buyers in the UK, but ebay can provide shipping to other locations. To buy, CLICK HERE.
Further options for buying both the ZX Spectrum Lower RAM Replacement Module and ZX Spectrum Upper RAM Replacement Module will be listed here soon. Both types are available to purchase now, but with some restrictions depending on your location. Please use the form below to request more information.
A small number of ZX81 16K RAM modules are available (in lots of 2) for UK customers only. To buy, visit Sell My Retro.
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.