Rudys Retro Intel | Commodore PET 2001-8 Repair Time. Let's see if it will live again! @RudysRetroIntel | Uploaded February 2024 | Updated October 2024, 1 hour ago.
In this video, I will be repairing a Commodore PET 2001-8 computer. Now I don't have the case, monitor or power supply. Going to see if we can use the Commodore PET 4016 to help out. Let's see how this goes.
PET 2001-8 motherboard repair is from:
youtube.com/@EverythingIsBrokenGarage
Big Shout Out to Chuck for all his support:
youtube.com/@HutchCA
nwX287 Real Time Clock replacement
github.com/necroware/nwX287
Replace 6520 with WDC 65C21N which is a direct replacement IC.
*** Updated **
Newest PET 2001-8 Assembly 320008 Board diagram that is shown in this video can be found here: github.com/RudyRetroIntel/Vintage-Computer-Diagnostics/blob/main/Commodore%20PET%202001-8-Diag-Info.pdf
The documentation is ambiguous about H3 so I'm not sure which regulator powers that chip.
*NOTE: The orientation of the character ROM at A2 is different for different version of the PCB.
The 2001-8 (Assembly Number 320081) which has MOS 6550 RAM and Synertek 2316B ROMs.
The 2001-8 (Assembly Number 320008) which has MOS 6540 ROMs.
The layout is the same but the chip pinouts are different.
It is only the character ROM orientation that's different for 6540 vs 2316B ROM chips.
The Assembly Number 320132 and Assembly Number 320137 boards use 2114 sRAM instead of 6550 with 6540 and 2316B ROMs respectively.
I would like to thank all the subscribers and viewer like you!
Big thanks to these Patreon members!
Dave Vintage Apple Tech
youtube.com/@DavidStahlOLDHAPPyMACs
Jamie's Hack Shack
youtube.com/@JamiesHackShack
Rudy's Retro Intel email: retrointeldiy@gmail.com
For more vintage computer information, check out my GitHub: github.com/RudyRetroIntel
Help support this channel. Patreon Page - patreon.com/user?u=60394278
Intro and outro music for Rudy's Retro Intel (full copyrights) granted by:
Thano Productions Inc.
email: thanopapastamoulis@gmail.com
Thanks again for watching!
Rudy
In this video, I will be repairing a Commodore PET 2001-8 computer. Now I don't have the case, monitor or power supply. Going to see if we can use the Commodore PET 4016 to help out. Let's see how this goes.
PET 2001-8 motherboard repair is from:
youtube.com/@EverythingIsBrokenGarage
Big Shout Out to Chuck for all his support:
youtube.com/@HutchCA
nwX287 Real Time Clock replacement
github.com/necroware/nwX287
Replace 6520 with WDC 65C21N which is a direct replacement IC.
*** Updated **
Newest PET 2001-8 Assembly 320008 Board diagram that is shown in this video can be found here: github.com/RudyRetroIntel/Vintage-Computer-Diagnostics/blob/main/Commodore%20PET%202001-8-Diag-Info.pdf
The documentation is ambiguous about H3 so I'm not sure which regulator powers that chip.
*NOTE: The orientation of the character ROM at A2 is different for different version of the PCB.
The 2001-8 (Assembly Number 320081) which has MOS 6550 RAM and Synertek 2316B ROMs.
The 2001-8 (Assembly Number 320008) which has MOS 6540 ROMs.
The layout is the same but the chip pinouts are different.
It is only the character ROM orientation that's different for 6540 vs 2316B ROM chips.
The Assembly Number 320132 and Assembly Number 320137 boards use 2114 sRAM instead of 6550 with 6540 and 2316B ROMs respectively.
I would like to thank all the subscribers and viewer like you!
Big thanks to these Patreon members!
Dave Vintage Apple Tech
youtube.com/@DavidStahlOLDHAPPyMACs
Jamie's Hack Shack
youtube.com/@JamiesHackShack
Rudy's Retro Intel email: retrointeldiy@gmail.com
For more vintage computer information, check out my GitHub: github.com/RudyRetroIntel
Help support this channel. Patreon Page - patreon.com/user?u=60394278
Intro and outro music for Rudy's Retro Intel (full copyrights) granted by:
Thano Productions Inc.
email: thanopapastamoulis@gmail.com
Thanks again for watching!
Rudy
