Fully refurbished Sinclair ZX81 with a red Issue 3 board and 2C210E ULA marked with 8307 datecode (7th week of 1983).
Soak tested and load/save tested OK. Fitted with a ZX8-CCB-SYNC - a "digital" video output for Sinclair ZX80 / ZX81 with special sync generator when using FAST mode or LOAD/SAVE.
> Recapped with quality Vishay brand capacitors
> ULA heatsinked
> ZX8-CCB-SYNC composite mod fitted for use on modern TVs
> Thermal compound applied to heatsink
> All sockets re-tightened
> New keyboard membrane
