My Trimble GPSDO just arrive but I have a problem with the POWER Supply Unit.
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. _______________________________________________ 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.
