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8-bit acorn software: other • Re: Diagnostic/testing utilities for BBC?

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The keyboard issue (for the keys) is normally dirty or tarnished contacts in the keyboard switches. Repeatably pressing and releasing each affected key fifty odd times often helps. Spraying contact cleaner may help. Or if that doesn't help, desoldering each key switch and then one at a time unscrewing each pin to clean them, and then refitting should get all the keys working in most cases.

The LED could be a poor connection, dry/broken solder joints or failed LED.

Mark

Statistics: Posted by 1024MAK — Sat Jun 22, 2024 11:26 pm



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