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.
ZX Spectrum RAM modules are on sale again. Unfortunately the price has had to be increased. This was necessary mainly because the SRAM IC they use costs approx. five times more than it did when the modules first went on sale (and is now no longer manufactured). Several previous component and delivery cost increases were absorbed without changing the sale price of the modules. Once existing stocks of the RAM modules have been exhausted, there are unlikely to be any more of the present design. A revised design might (or might not!) be produced in the future. Only a fairly small number of the upper RAM modules are left. ZX81 16K RAM modules will be on sale again soon.
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.