[time-nuts] HP5065A progress
magnus at rubidium.dyndns.org
Sun Oct 9 16:34:59 EDT 2011
On 09/10/11 17:22, Magnus Danielson wrote:
> Fellow time-nuts,
> I have now diagnosed the unit B A15 PSU board to such a level that I now
> know that the 9100-2478 transformer in the +20V to -20V switcher.
> If someone is sitting on a spare transformer or A15 board (with working
> transformer) that I could buy from you, please let me know. The rest of
> the unit is in good operational order, so spending time to repair the
> A15 board gives good bang for the buck.
> I have just recapped the unit A board and when testing it in unit B
> (which is the unit on my table right now) unit B locks up.
> I will go down and repair traces and re-cap unit C A15 board now. If all
> goes well with that, then I should be able to trim up unit C this evening.
... and after having done that and just a quick A3 trimming, I can
conclude that the C unit is locked and running along nicely.
Time to put the lids on and let it run all by itself.
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