Re: Hameg HM307-3 Cleaning and Repair
Thanks for the simulation Wavey Dipole. I'll look into that program.
I've checked the EM513 rectifier diodes out of circuit and they all test OK.
Voltage across D301/D302: -625V
Voltage across D304/D305: -621V
I've also made a few PSU measurements which are included with the attached picture.
Buggies, funnily enough, that horrible trace only appeared once! I have not seen it since. All of the large smoothing electrolytics were tested with my Hunts tester and they were found not to be leaky.
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