[time-nuts] Trimble GPSDO power suply unit.
Tom Van Baak
tvb at LeapSecond.com
Thu Sep 11 09:50:48 EDT 2008
> My Trimble GPSDO just arrive but I have a problem with the POWER Supply
> After connecting all wires to the Trimble plug and made a check if all
> voltage is correct and left the PS unit to run
> on the table without load/connecting to the GPSDO, about 15min got a
> big bang and the Power Supply Unit blow-up.
> Opening the box found Q1 transistor / BUZ78 / blown and seems to me
> that it was a short around R1, R2 and C11
> area, namely the two resistor had short to each-other...../ factory bad
> installation??? /
> Anybody having a circuit diagram ????? I am trying to repair.....
> Please help, I just do not want to throw the unit to the garbage can.
I'll take care of a replacement for you; contact me off-line.
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