(Topic ID: 87473)

Earthshaker Owners Club - it's all your fault!

By jibmums

9 years ago


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#1388 1 year ago

New to the forum! Got a question about the shaker voltage.

I have a problem with the resistor burning out on the high current driver board. Checked voltage, and it's around 50VDC.

I'm also reading about 50VDC from the aux power board post-rectifier, but only about 30VAC pre-rectifier (realizing that this is the 25VDC circuit). Aux board has an unpopulated power resistor R10 whose value is not specified in the schematic. In the schematics, I see a varistor which I believe is supposed to limit the DC to around 47v.

Any clues at to what's going on? There's not much in the circuit, so not a lot of suspects. Varistor maybe?

Thanks!

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