08-22-2014, 01:58 PM
The only thing about the tuning cap which would cause no oscillation would be a short across the plates. If the mica is missing or damaged between the trimmer plates it could cause a short.
Best way to check would be to remove the wires from the tuning cap and check for resistance between the rotor and stator plates. Rotate the cap shaft over its full range. You should have an infinite resistance (open circuit) reading. If you read a short or low resistance then there is a problem.
Best way to check would be to remove the wires from the tuning cap and check for resistance between the rotor and stator plates. Rotate the cap shaft over its full range. You should have an infinite resistance (open circuit) reading. If you read a short or low resistance then there is a problem.
