Denial

I swapped the VIAs with known good ones and there was no change in the condition. Any other ideas? Perhaps a support 74xx chip might be bad? Regarding the keyboard, I wiped the circuit board down with rubbing alcohol and cleaned the rubber key pads gently with a very mild mix of dishwashing soap and...

Good news everyone! I successfully replaced the bad 2114 RAM chip, which solved the issue with being able to enter and run programs. Color and sound output look good. Cartridge port works, joystick works, keyboard works but has some issues, and Datasette works. For the curious: I diagnosed the bad 2...

Unfortunately I don't have access to an EEPROM programmer. Thanks though.

@eslapion thank you for the feedback. I will proceed with the RAM replacement and let you guys know how it turns out. I am aware of the fragile nature of older circuit boards, but I do have quite a few year's experience with a soldering iron. I intend to clip the leads from the RAM chips, then pull ...

Hey guys, I'm new to this forum but have been in the Commodore community for a long time. My first computer was a C64, but have recently discovered her older sibling, VIC-20 :) Anyway - I acquired an older VIC (PET keyboard model). Serial #64944. Cosmetically, it's in great condition. Looks like it ...

Thank you!

This is the Final Expansion 3 cartridge? Where do you get plans/parts for this? Is it sold as a kit?