Sinclair ZX80 / ZX81 / Z88 Forums

hullo, i need a bit of advice. i am unsure about what size c15 should be. i am making a zx80 and i am using the BOM from https://myretrostore.co.uk/wp-content/u ... 80-BOM.pdf. for c15 it says 0-330pf. which sounds like a tuning cap, but i have looked at photos of original zx80 PCBs and it is clearly a normal cap. if anyone could please tell me the size i need, id be jolly grateful.

doris

I uploaded original build instructions a whileback:

https://www.sinclairzxworld.com/viewtop ... 506#p35506

It may help.

Looks like C15 is referenced in section 7 - faults.

C15 on my ZX80 is a ceramic marked 221, that’s a 220pF.
Mark

thanks very much to the pair of you, that is exactly what i needed to know.