[time-nuts] HP 5061B problem

service at frequencystandards.com service at frequencystandards.com
Sun Dec 2 07:32:55 UTC 2007


Hi Dennis, it is encouraging that you have the 30 volts at least. Take the
power supply board out and check the large transistors on the left side of
it. If memory serves right, there should be 2 of them on heat sinks. There
is a fair chance that one of them is bad. One should actually be a
regulator IC. I will pull out the schematic when I get back in late Monday
and can give you more helpful info. I will go ahead and contact you off
list then and we'll get your problem figured out.

Chuck






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