The first thing you should do is to check the condition of the power fuse. If it is blown or missing, you have some work to do looking for the cause of the fuse trouble.
If you are concerned about old electrolytics in the power supply, and you can't check them for capacitance when off, there is an alternative to using a Variac. Cut one wire of an extension cord in order to put a lamp socket in series with the load. If line power is 120 volts, put a 100 watt bulb in the socket. Turn on the unit and be ready to turn it off again if the bulb lights at near or full brilliance. If it does, you have the same work to do as if the fuse had blown. If it starts bright and dims, you may be forming electrolytics. If the bulb maintains the same brightness, try a bigger bulb - or disconnect the ovens. You definitely need to read the part about running the ion pump. Bill Hawkins Disclaimer: I haven't tried this on an HP5061. You could still damage the switchers. You can't detect open capacitors this way. -----Original Message----- From: time-nuts [mailto:[email protected]] On Behalf Of Hugh Blemings Sent: Thursday, June 15, 2017 1:02 AM My intuition is to set it to one side until I can become familiar with the operating manual and potentially bring power up to it slowly with a Variac or similar. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
