Commodore PET 2001 Chiclet (1978) Fixed.
Commodore PET 2001 Chiclet (1978) Fixed.
Defect:
- Garbage screen.
Repair:
The problem of this computer was caused by the oxide on all pins of the RAM and inside of the sockets as you can see from the photos.
To clean the pins of the IC i always use the same way, gently with a rasp nail on the ic pins and then spray a bit of air, see photo.
For cleaning the socket i scraping with a fine tip gently the contact inside the socket.
I have tested all with the ROM/RAM board and simulating the various BASIC and configurations of RAM and loaded some software, including my demo with the PET MicroSD by Dave Curran (Tynemouth Software)
Everything worked perfectly.
As you can see from the photos i have now a complete workstation for repair PET 2001 out of the box, avoiding to have on the table the computer that takes a lot of space.
Gallery of the repair:
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