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Sinclair ZX81 - Issue 1 - Early 8113 ULA - Green PCB - Bugged ROM

Product Code: SIN644JL26 | Manufacturer: Sinclair | Condition: Refurbished | Weight: 0.400Kg

Fully refurbished Sinclair ZX81 with green Issue 1 board and extremely early 2C158E ULA marked with 8113 datecode (13th week of 1981 and around 11 weeks into production). This early ZX81 also has the bugged ROM which was usually fixed by Sinclair, although some (like this one) never got sent back. In excellent cosmetic and working order.

Normally, our refurbished ZX81s would be fitted with a heatsink to the ULA to prolong it's life. With this ULA being extremely early and with the ZX81 being a real collector's item we have left the heatsink off in this instance. Soak tested and load/save tested OK.

Recapped with quality Vishay brand capacitors
>  ZX8-CCB composite mod fitted for use on modern TVs
Thermal compound applied to heatsink
New keyboard fitted
>  All sockets re-tightened

This product is currently out of stock

Sinclair ZX81 - Issue 1 - Early 8113 ULA - Green PCB - Bugged ROM

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