[nigelpritchard]

For years I've had an Advance VM77C Valve Voltmeter sitting around doing nothing useful so I thought I'd check it out. The meter needle spent a long time wandering around and especially after a bit of surreptitious tapping.

After pulling out all the valves and spraying IPA into the valve bases it is at least functional although it seems to be out of calibration.

It would be nice to have it running correctly. It looks like someone has been having a go inside in a few places.

Does anyone have a user manual and preferably service manual for this device?