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Repair & Cleaning a rusty Motherboard of a Commodore CBM 8032

CBM 8032: PCB - Before and After

I have received this motherboard of a CBM 8032 to repair from Rossano T.

The motherboard was devastated by rust, many components are short-circuited due to rust that was abundant on the pins side of the chip. Unfortunately the computer was turned on to test it, causing the total breakdown of more components.

I have installed 40 socket because some components are rusty other are dead, however some traces under the chips are eaten by rust and and i had to rebuild.

The repair and cleaning took me a very long time and a lot of patience, it took me about 10+ hours.

Components Replaced:

  • 1 x 4650 (6845P) CRT Controller
  • 3 x 4116 RAM
  • 2 x 2114 Video RAM
  • 5 x 74LS244
  • 3 x 74LS74
  • 1 x 74LS02
  • 1 x 1uf 100v Capacitor

Phases of the repair:

  1. emiliano
    September 6th, 2013 at 08:47 | #1

    ottimo lavoro! ho lo stesso problema sulla MB di un 8096-sk :-( quale prodotto usi per rimuovere la ruggine dal pcb e dalla piazzole?

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