Electronics > Repair
Agilent 53132A Counter Repair (FIXED and Upgraded)
SoundTech-LG:
Got my hands on another 53230A... this one however, has CH1 dead, but the price was right, so need to figure out if the Front End got hit hard enough to fry something obvious. All is under that shield can I do believe, (lots of 5V relays as well). If anyone has ventured in there and repaired anything, it would be nice to hear of your adventure.
No schematics on these of course, (at least that we can have) so even more fun.
TheSteve:
I made some offers on that one :)
If you're lucky it is a broken connection right where the BNC is mounted. If not, feed in a signal to both channels and see where it stops.
SoundTech-LG:
Well MAYBE I got lucky... we'll see.
I just found the old post...
https://www.eevblog.com/forum/testgear/53230a-counter-ch1-input-trace-fails!/
HighVoltage:
Over the years I had two counters with a broken BNC solder connection / PCB crack at the BNC connector. Sometimes the BNC connector is not well mounted. If this is the case on yours, make sure to make the mechanical connection between the BNC connector and housing is well done and not wiggly.
SoundTech-LG:
Hi,
Possible a bit of board flex caused it, but since it is purposely a very, very thin trace, it appears the intent was for the trace to pop before anything else, on high current, maybe. If you look closely at the OP photo, you can see the BNC shell is directly soldered onto the board, as is the signal connection. To replace that thin trace with a bus bar is probably not a great idea. I plan to use a very small piece of wire, if it turns out this is the failure. I would much rather re-visit the wire, than troubleshoot, and replace components in the Front End.
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