Electronics > Repair
Agilent 53132A Counter Repair (FIXED and Upgraded)
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Orange:

--- Quote from: Nuno_pt on January 25, 2016, 09:27:16 pm ---HighVoltage,

Can you tell how the fan is attach to the board, solder wires or connector?
Can you confirm that the fan is 12Vdc?
I'm not at home till almost the end of the week, so no chance to look on the inside.

--- End quote ---
The fan is a 12 Volts type with solder leads. It's a 40x40x20mm
Nuno_pt:
Thanks Orange.
uncle_bob:
Hi

Just a comment from a latecomer to the thread. Based on a fleet of about a hundred 53131's 132's and 181's - they mostly die from a problem in the power supply. So far we have gotten by simply swapping supplies out of the 181's into the others (the 181's are no longer used). I'll take a look at a few supplies next time we have a pile of failures to go through.

Bob
TheSteve:
I have a broken 53132A inbound, no idea what is wrong with it. If it is something simple I'll post it in this thread, if it turns into a big process I'll start a new thread.
HighVoltage:
Lately I have been blessed with repairs that turned out to be simple. You just have to take the time and go step by step through the signal path and eventually the problem will emerge.

For many days no, I have this counter hooked up to my HP GPSDO and out of the 12 digits, only the last two are changing
It is quiet impressive, how stable the counter and the GPSDO is.
I calibrated it once against the "locked" GPSDO and since then the system has been extremely stable.

And yes, it was a 12V fan that was installed in this counter.

uncle_bob,
since we now have the schematics for the power supply, you should be easily figure out, what the problem is.
BTW, how come you have hundreds of these ?
What for?
Pictures?

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