Quote:
Originally Posted by cruton55
one of our three sensors seems to be a bit glitchy, it works for atmost 20min then randomly it detects nothing. the other two sensors work fine though. The "tuneing knob" if you will has no effect on it almost as if the sensors become frozen. only after an extended period of time does it work again. any suggestions?
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The tuning knobs might have broken off on the inside from turning it past the stop point. If you take the plastic bit off, there's a normal-looking trim pot in there, which you can adjust with a small philips head.
Make sure everyone knows not to turn the working ones past the stops.