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Ian Wolstenholme wrote: One of my BBC Model Bs is desperately ill - the usual start-up message appears but random sounds are produced all the time. The keyboard only works for a few seconds then BREAK has to be pressed to reactivate the keys. It is a beautiful Issue 4 with DNFS - can anybody prescribe the appropriate medicine or surgery to restore this ailing Beeb? I'd be happy to help diagnose your problems if you have access to a logic probe an oscilloscope or (with more difficulty) a multimeter. Mail me direct. geoff.stevens@blueyonder.co.uk |