Mods for the ZX81

Products:

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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. (7 in stock)

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 it in the rubber-keyed Spectrum unless you desolder the ULA's IC socket and fit the ULA directly onto the motherboard.) 
• 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. (17 in stock)

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. (12 in stock)