Mods for the ZX81

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Heatsink adhesive 6g Tube

Small Tube Of Thermally Conductive Adhesive

  • For attaching heatsinks to chips
  • 5 gram tube - enough for about a dozen chips
  • Instructions supplied
Price: £ 1.25   Add to cart. (9 in stock)
Heatsink for 40 pin DIL Chips - Black Anodized, Bare

Heatsink for 40 Pin DIL Chips - Bare

  • Heatsink suitable for 40 PIN Chips such as the CPU in the Commodore 64 and ULA in ZX81 and Spectrum Plus. 
  • Note: There is not enough room for a heatsink in the rubber-keyed Spectrum unless you desolder the ULA's IC socket and fit the ULA directly onto the motherboard. For the Spectrum+ there is room to fit the heatsink without soldering the ULA to the PCB if the keyboard backing plate is the thin grey metal type (the plastic backing plates are thicker and get in the way slightly). 
  • Black anodized finish
  • Dimensions: 50mm x 19mm x 4.8mm
  • Attachment methods: The heatsink is not self-adhesive - it requires thermally conductive glue which I sell separately.
Price: £ 1.50   Add to cart. (35 in stock)
Heatsink for 40 pin DIL Chips - Black Anodized, Self Adhesive

Heatsink for 40 Pin DIL Chips - Self Adhesive

  • As above, but with thermally-conductive self-adhesive pad pre-attached, ready to peel and apply.
Price: £ 1.75   Add to cart. (4 in stock)