after quite a bit of research, consulting with a friend who's an
electronics geek, etc. the tachometer on my Clausing is fixed! The opto
sensor and the LCD needed to be replaced, and suitable parts were found
at Digikey, but there was still a nasty intermittent problem happening.
finally diagnosed it down to a overheating diode in the power supply.
works like a champ now.
--Joel
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