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MotorBikeLes · 8th Nov 2018, 6:37 pm

It looks like good news after all. I braved it out to the shed this afternoon, removed the jumper (which is in fact now a 200mA meter fitted last year to improve tuning the coil). Plugged in, switched on, and neon lit up, fan started and nothing untoward followed. Obviously not a dead short on the transformer primary. I checked C3 with my megger, no leakage there, and then checked C2, which seemed OK with megger, though it does seem to have leaked a little more oil. Nonetheless I replaced that with a new porcelain version I had off Ed last year, but had not yet changed. A few more checks including C3 capacitance before I try it again, but looking good.
Les.

8th Nov 2018, 6:37 pm	#23
MotorBikeLes Nonode Join Date: Dec 2012 Location: Kirk Michael, Isle of Man Posts: 2,350	Re: Dead Ultrasonic cleaner. It looks like good news after all. I braved it out to the shed this afternoon, removed the jumper (which is in fact now a 200mA meter fitted last year to improve tuning the coil). Plugged in, switched on, and neon lit up, fan started and nothing untoward followed. Obviously not a dead short on the transformer primary. I checked C3 with my megger, no leakage there, and then checked C2, which seemed OK with megger, though it does seem to have leaked a little more oil. Nonetheless I replaced that with a new porcelain version I had off Ed last year, but had not yet changed. A few more checks including C3 capacitance before I try it again, but looking good. Les.