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27 September 2026
- diffhist Commodore PET 2001 Troubleshooting 10:10 +11 Josh talk contribs (Fix stray backticks)
- diffhist Commodore PET 2001 Troubleshooting 10:10 +2,739 Josh talk contribs (Verify against Commodore's own hosted parts lists and schematics: remove the internally contradictory regulator claims (a 7805 in one section, four 78L05s in another) - Commodore's main-logic parts list contains no regulator at all, and the only one published is VR1, a 7812 on the display assembly; correct the cassette motor supply (+9 V unregulated through a 7.2 V zener, not +6 V); add the 8 MHz crystal, the real device locations (UF3, UB8/UG8, UA5, UA2) and the 6502 pin assignments; de-dupl...)
25 September 2026
- diffhist File:Parts-3.gif 02:37 +831 Josh talk contribs (P4 verification: real File: page - what the document is, which article uses it, and an honest licence block (replaces an empty page or 'File uploaded with MsUpload'))
- diffhist Commodore PET 2001 Service Documentation 02:09 +5,209 Josh talk contribs (Index the full PET 2001 drawing set sheet by sheet - 24 document pages that were reachable from no article. Notes what each sheet settles and that the 'Rev 2'/'Rev 3' titles are wiki numbering, not Commodore's)
- diffhist Commodore PET 2001 Capacitor Replacement Guide 02:08 +1,382 Josh talk contribs (C22/C27 resolved: Commodore's own Display PCB Assembly placement drawing marks both 3.3 uF 200 V or 160 V, agreeing with the schematic against the parts list's '33 uF'. Adds the TIP-55A substitution procedure, the spark gaps and the flyback marking)
- diffhist Video Board Parts List (1 of 3) 02:07 +3,860 Josh talk contribs (P4 verification: real documentation page — identifies this as Commodore's Display Assembly Component Cross Reference (the PET's PSU and monitor), transcribes the parts with Commodore numbers, and resolves the C22/C27 value against two other drawings)
- diffhist System Board Parts List (2 of 3) 02:06 +2,854 Josh talk contribs (P4 verification: real documentation page — Commodore's own title, the component data the sheet carries with part numbers, and what it does not cover)
- diffhist System Board Parts List (1 of 3) 02:06 +2,600 Josh talk contribs (P4 verification: real documentation page — Commodore's own title, the component data the sheet carries with part numbers, and what it does not cover)
- diffhist 2001 Main Logic Assembly 02:06 +3,752 Josh talk contribs (P4 verification: real documentation page — Commodore's own title, the component data the sheet carries with part numbers, and what it does not cover)
- diffhist Commodore PET 2001 Service Documentation 01:29 +1,192 Josh talk contribs (Link the two PET documents this drive documented: Commodore drawing 320130 sheet 1 and the third-party PET-Shack bundle, with what each does and does not contain (P4 orphan fix))
- diffhist Schematic 320130 (Sheet 1 of 3, Static PET) 01:21 +3,013 Josh talk contribs (P4 documentation drive: rewrite doc-holder as a real documentation page - printed title, Commodore P/N, drawing numbers, assemblies covered, honest gaps and what each settles; corrects the C64GS date (November 1990, not May) and fixes the malformed 320130 download link)
23 September 2026
- diffhist Commodore PET 2001 20:05 +2,809 Josh talk contribs (Cite to Commodore's own PET 2001 parts lists and schematics; state the four static board assemblies, 6502 at UF3 with Vcc on pin 8, 8 MHz Y1, no regulator on the main logic board, cassette drivers on +9 V unregulated not +12 V; remove the piezo-speaker claim that contradicted the infobox; correct which models have the internal cassette deck; remove red links)
22 September 2026
- diffhist Commodore PET 2001 Capacitor Replacement Guide 18:24 +6,518 Josh talk contribs (Rebuild from Commodore's own PET 2001 parts lists: every electrolytic value on the page was wrong. Main logic board has only C7-C10 47uF 16V, not 4700uF/2200uF/1000uF/220uF/10uF; the 4700uF 25V is C1 on the display assembly; C101-C123 do not exist; no 7805 on the PET; board list corrected to 320008/320081/320132/320137; CRT and mains hazards stated properly; Unverified data cleared)
- diffhist N Commodore PET 2001 Service Documentation 18:24 +5,324 Josh talk contribs (Create: index of Commodore's four PET 2001 service documents now hosted here (two parts lists, two schematics), with the four static-board assemblies from Commodore's own schematic note)