Search Posts:

Commodore PET 2001 Photos

SHARE

Return to Threads

  Commodore PET 2001 Photos by Bill Degnan - 03/10/2007 21:31
A fellow Commodorian met me at my house today to help work on some PETs we have.

In total 4 PET's were worked on today from less than functional systems

1) 2001-8 (sn 29652)- when tape loading program, some junk appears on screen see #2 below)

2) 2001-8 (sn 20343)- (bad keyboard replaced)

3) 2001-32B (bad power supply replaced, monitor fixed see #1 below)

4) 2001-16N - (not fixed: RAM (?)

5) also semi restored a CBM 8250 disk drive using a B-128. Was not able to header a disk, but could read directories in drive 0.

Lessons learned:
#1 If your monitor is hissing pretty loudly but there is no smoke, the suction cup connector may have come dislodged from the inner picture tube chassis - re-attach

#2 If you are having issues loading programs from the tape such as garbled characters appearing on the screen, try loading the programs on an external tape drive by disconnecting the internal drive and using the port for your external tape player. If you are successful loading programs from external tape drive, 1) you may have a power supply problem 2) at least you know the processor and RAM are probably OK.

Here are some hi-res pics:
http://vintagecomputer.net/commodore/2001/
(there are no pics of the 2001-32B or 2001-16N)

Bill Deg

Reply
  Commodore PET 2001 Photos by Bill Degnan - 03/11/2007 21:32
> Lessons learned:
> #1 If your monitor is hissing pretty loudly but there is no smoke, the
> suction cup connector may have come dislodged from the inner picture tube
> chassis - re-attach
>
>
And there is a nice orange glow coming from the end of the yoke...


> #2 If you are having issues loading programs from the tape such as garbled
> characters appearing on the screen, try loading the programs on an external
>
When Bill says garbled characters on the screen, we aren't talking about
when the system is started up, but while trying to LOAD a program.. For
instance while searching the tape for a certain program (say, Police!)
and the other programs found are spelled incorrectly or have garbled
characters (like graphics characters).


> tape drive by disconnecting the internal drive and using the port for your
> external tape player. If you are successful loading programs from external
> tape drive, 1) you may have a power supply problem 2) at least you know the
> processor and RAM are probably OK.
>
>
And exercise your machine!! :D


Reply
  Commodore PET 2001 Photos by Bryan Pope - 03/14/2007 15:19
The hissing did go away when the suction cup thingie was reattached (when the power was *OFF* mind you!), but the orange glow stayed.

Cheers,

Bryan

Reply
  Commodore PET 2001 Photos by Bill Degnan - 03/14/2007 15:26
The orange glow is normal, all monitors have this at the tip of the crt.

Reply

Resources:


Buy a Commodore Computer Poster

Popular Topics and FAQs


  • Commodore B Series Tips and Tricks
  • Aerocomp TRS 80 M 1 Expansion Unit DDC
  • Items Wanted
  • Lobo Max 80
  • Zenith Z-19-CN
  • Prototype PET 2001 photo
  • Using Toggle Switches to Analyze Memory
  • Commodore Disk Archive Project
  • PET 2001 Prototype at Gametronics 1977
  • Jim Butterfield Photo
  • IMSAI 8080 With Processor Tech. Cutter
  • Secrecy is the keystone of all tyranny
  • Cromemco System Three
  • Northstar Horizon - Boot Problem
  • Computer History and Restoration Links
  • Commodore BX-256-80 - 8088 Co-processor
  • S-100 board testing with Z-80 ICE
  • Donner 3500 - an early portable computer
  • Digital (DEC) PDP 11/05 NC Assembly
  • Univac 1219 rescue
  • IMSAI 1.4 BASIC vs. MITS 8K BASIC
  • Fido BBS listing node list 6-13-1986
  • PDP 8e
  • MITS 88-2 SIO (2SIO) for BASIC
  • Visual Technology Inc Model 1050
  • Amiga 2500 Restoration
  • The Evolution Of IBM Computers
  • Replacement teletype print hammer head
  • Archiving and Copying Software 101
  • Computers Built 1940 - 1950
  • CBM B-520 (a.k.a B256-80 or B500 256)
  • RCA COSMAC Microkit
  • Commodore 64K C-116 Mods
  • MITS 8800b Turnmon 9600 baud
  • Catweasel, 8in and 5 1/4
  • Raspberry Pi as Gateway to Internet
  • Digital PDP11 late 1969 early 1970
  • PDP 11/40 72 inch cabinet model
  • PDP 11/40 Industrial 11 model
  • Digitial MicroVAX 3100 30 System
  • Digital VAX 4000-200
  • Commodore 64 / 1541 DRIVEKNOCK
  • Booting the System Using RL02 drive
  • PACS: Reflections by Kathleen Mauchly
  • Tele-Graphic Computer Systems Inc.
  • Commodore B Series SID Jukebox?
  • Installing Core into PDP 11/40
  • Setting Up OpenVMS 7.1 DNS CLERK
  • Felt-Tarrant Comptometer Model J
  • NextStation Color
  • Digital Rainbow (PC100-B2)
  • 1970 Compusad Compulogical Tutor
  • Archiving Papertapes Using DSI NC 2400
  • 1976 P.C.C. Features the MAI JOLT 6502
  • 1961 Beckman DEXTIR Computer
  • UNIVAC 1 and UNIVAC File Computer 1
  • Past Issues:


    Altair cassette 680 BASIC v1.1

    This image was selected at random from the archive. Click image for more photos and files from this set.