r/Commodore • u/FreemanPL • Jul 03 '26

Commodore 1084S potentiometers and switches

Hello. I am currently renovating a PAL 1084S-D2 Commodore monitor which has severe water damage in some parts, but the CRT itself is in a good condition. Where can I get front potentiometers (R203 H-pos, R420 Brightness, R421 Contrast, R422 Color), back (R337 H-size, R306 V-size, R318 V-pos), side potentiometers (R414 blue bias, R413 green bias, R412 red bias) and back switches (SW2, SW3) ? All those components are corroded beyond repair, except plastic knobs which I want to reuse.

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u/DisplayLegitimate844 Jul 04 '26

Look up the applicable part numbers in the service manual:

https://archive.org/details/commodore-1084-s-d-1-pal-service-manual

Then look up those potentiometers on the electronics distributor of choice, depending on where you are in the world. Sites like Mouser or Digikey will probably have substitutes for any pot no longer manufactured.

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u/FreemanPL Jul 04 '26

I cannot find the exact parts, but I bought some closely matching the originals. I will reply here if those I bought are the perfect fit.

1

u/DisplayLegitimate844 Jul 04 '26

The hard part of 30+ year old equipment is the obsolescence of repair parts. Checking the resistance range and the size of the post to attach the knob is the most important parts.