Thanks for looking at our Sinclair ZX81 computer – Refurbished and Upgraded to 32K RAM and HRG (Hi Res Graphics) Ready!
Condition is Seller refurbished.
We’ve performed the following work on this little beast:
- New Membrane
- 2C184E ULA with Heatsink
- Electrolytic capacitors changed for new quality aluminium types
- New DC converter to replace ageing 7805 Regulator
- Added custom PCB to add composite video and back porch for new TV’s
- Added custom 32K SRAM upgrade with HRG8 support (Hires Graphics)
- Cases cleaned
- New Feet added
- PSU with new Capacitors
All in all, this is a well upgraded, refurbished ZX-81 with a case which is very tidy.
The actual screen is crystal clear with no lines or patterns on the display.
Also available on eBay – http://ebay.us/IXhdW9?cmpnId=5338273189