Components for the ZX81

Products:

Click on the product thumbnail for an enlarged view.

3 Amp Fuse for UK Mains Plug

3 Amp Fuse for UK Mains Plug

  • Appropriate fuse for the UK mains plug of Spectrum, Commodore 64 etc
  • Brand new, made to BS1362 standard - ASTA approved.
Price: £ 0.25   Add to cart. (26 in stock)
7805 5 Volt Regulator IC

7805 Voltage Regulator

Replacement 5 volt regulator IC for the Spectrum, (breadbin) Commodore 64, ZX81 etc

Price: £ 0.50   Add to cart. (10 in stock)
Ceramic capacitors 10 x 100nf (0.1uf)

A pack of ten 100nf (0.1uf) ceramic disc capacitors

  • As used in various locations the PCB (usually marked "104" on the body of the cap) of the Commodore 64, Spectrum and other micros 
  • Ceramic capacitors do not age in the same way as electrolytics so usually don't need to be replaced, but they are quite fragile and sometimes found physically damaged.
Price: £ 0.99   Add to cart. (8 in stock)
Ceramic capacitors 10 x 10nf (0.01uf)

A pack of ten 10nf (0.01uf) ceramic disc capacitors

  • As used in various locations the PCB (usually marked "103" on the body of the cap) of the Commodore 64, Spectrum and other micros 
  • Ceramic capacitors do not age in the same way as electrolytics so usually don't need to be replaced, but they are quite fragile and sometimes found physically damaged.
Price: £ 0.99   Add to cart. (15 in stock)
Ceramic capacitors 10 x 22nf

A pack of ten 22nf ceramic disc capacitors

  • As used in various locations the PCB (usually marked "223" on the body of the cap) of the Commodore 64, Spectrum and other micros 
  • Ceramic capacitors do not age in the same way as electrolytics so usually don't need to be replaced, but they are quite fragile and easily damaged.
Price: £ 0.99   Add to cart. (10 in stock)
Ceramic capacitors 10 x 47nf

A pack of ten 47nf ceramic disc capacitors

  • As used in various locations the PCB (usually marked "473" on the body of the cap) of the Commodore 64, Spectrum and other micros 
  • Ceramic capacitors do not age in the same way as electrolytics so usually don't need to be replaced, but they are quite fragile and easily damaged.
Price: £ 0.99   Add to cart. (10 in stock)
Replacement capacitors for Sinclair ZX81 - Issue 1

ZX81 Capacitor Pack #1

  • Replacement capacitors for the ZX81 issue 1 board (the version with radial caps and wavy PCB tracks.)
  • Comprises 2 caps: 1 x 1uf, 1 x 22uf (please check your board for any variations and let me know in the Special Instructions box during checkout if any substitutions or additions are required).
  • Good quality (Panasonic, Nichicon etc) long life caps.
Price: £ 0.99   Add to cart. (7 in stock)
Replacement capacitors for Sinclair ZX81 - issue 3

ZX81 Capacitor Pack #2

  • Replacement capacitors for the ZX81 issue 3 board (the version with axial caps)
  • Comprises 3 caps:  2 x 22uf, 1 x 1uf (please check your board for any variation and let me know in the Special Instructions box during checkout if any additions or subsitutions are required).
Price: £ 0.99   Add to cart. (4 in stock)
Z80 CPU - NEW

Z80 CPU - New

  • Brand new direct replacement Z80 Central Processing Unit for Spectrum (and ZX81 etc) 
  • Modern lower-power CMOS version, made by Zilog.
  • Replacing the CPU should resolve the known issues with the out-of-spec Z80s sometimes found in Spectrums. (EG:  External interfaces not working correctly due to timing anomalies and weak signals such as "M1")
Price: £ 4.75   Add to cart. (12 in stock)
ZTX313 Transistor

ZTX313 Transistor

  • Often found in the Spectrum at TR1, TR2, TR3 and TR6 locations.
  • Also used in the ZX81
  • New, old stock
Price: £ 0.99   Add to cart. (18 in stock)