Commodore PET 2001 Troubleshooting: Difference between revisions

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This guide provides a comprehensive troubleshooting reference for the Commodore PET 2001 personal computer. It focuses on common faults specific to the PET 2001 (original models with MOS 6502 CPU, 6540 ROMs, 6550 SRAM, etc.) and offers diagnostic steps and solutions. Use this guide alongside general maintenance practices (see [[Commodore PET 2001 General Maintenance]]) and refer to the PET schematics (see [[:Category:Commodore PET 2001 Schematics|Commodore PET 2001 Schematics]]) as needed.

The PET 2001 was one of the earliest all-in-one personal computers. Due to its age and early semiconductor technology, many faults today relate to failing memory chips, ROMs, or power issues. When diagnosing problems, it is important to proceed step-by-step, starting from the most basic elements (power, reset, clock) before advancing to CPU logic, video output, I/O subsystems, and peripherals.

The PET 2001 was one of the earliest all-in-one personal computers. Due to its age and early semiconductor technology, many faults today relate to failing memory chips, ROMs, or power issues. When diagnosing problems, it is important to proceed step-by-step, starting from the most basic elements (power, reset, clock) before advancing to CPU logic, video output, I/O subsystems, and peripherals.<ref>[https://Test.com test.com]</ref>

== ⚡ Power Supply and Startup ==

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 This guide provides a comprehensive troubleshooting reference for the Commodore PET 2001 personal computer. It focuses on common faults specific to the PET 2001 (original models with MOS 6502 CPU, 6540 ROMs, 6550 SRAM, etc.) and offers diagnostic steps and solutions. Use this guide alongside general maintenance practices (see [[Commodore PET 2001 General Maintenance]]) and refer to the PET schematics (see [[:Category:Commodore PET 2001 Schematics|Commodore PET 2001 Schematics]]) as needed.
-The PET 2001 was one of the earliest all-in-one personal computers. Due to its age and early semiconductor technology, many faults today relate to failing memory chips, ROMs, or power issues. When diagnosing problems, it is important to proceed step-by-step, starting from the most basic elements (power, reset, clock) before advancing to CPU logic, video output, I/O subsystems, and peripherals.
+The PET 2001 was one of the earliest all-in-one personal computers. Due to its age and early semiconductor technology, many faults today relate to failing memory chips, ROMs, or power issues. When diagnosing problems, it is important to proceed step-by-step, starting from the most basic elements (power, reset, clock) before advancing to CPU logic, video output, I/O subsystems, and peripherals.<ref>[https://Test.com test.com]</ref>
 == ⚡ Power Supply and Startup ==