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Atari 65XE Troubleshooting Guide
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== Internal BASIC (XL/XE) == The XL/XE machines have BASIC built in. A bad internal BASIC ROM can stop the machine booting; '''hold OPTION at power-on to disable internal BASIC''' as a test (and to run software that needs BASIC off). If the machine boots with OPTION held but not without, suspect the BASIC ROM.<ref name="atari8">[https://8bithardware.wixsite.com/website/post/atari-8-bit-400-800-xl-xl-pictorial-fault-guide Atari 8-bit pictorial fault guide], 8bithardware; [https://atari-owner.com/club/articles/black-screen-problems-xl-xe-fix-checklist.25/ Black Screen [XL/XE] Fix Checklist], Atari Owners Club; and AtariAge repair threads. Source for the RAMโROMโPOKEYโGTIA/ANTICโCPU failure order, the Star Raiders diagnostic cartridge, the seated-socket checks, the PSU 470 uF capacitor and switch/connector faults, and the SALLY 1.79 MHz clock/reset checks.</ref>
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