Electronics > Repair

Agilent 53132A Counter Repair (FIXED and Upgraded)

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HighVoltage:
Congratulations on an easy repair.
Yes, it is a good idea to exchange all electrolytic capacitors and measure the voltages and ripple.

Carefully remove the goo and install a new silicone bumper.
I would also replace the fan with a new silent type.
 

analogRF:

--- Quote from: ArthurDent on May 23, 2018, 06:54:50 pm ---I just bought an HP 53132A on Ebay that was listed as parts only with a blank display. I gambled and got it and it looked pretty good. It had the 3 Ghz card and the HS oscillator (010 option) but as shown on Ebay, the display was completely dark. I took the case off and visually inspected the inside and the only problem at first glance was the white bumper on the main board was completely melted with just some goo remaining. 

Looking more closely I noticed one cap in the power supply had a bulging top so I replaced that 1000 uF/16V cap and the counter works perfectly. It took a while to find which REV I had so I could access the cal procedure but once I got that info and went through the cal menu, everything seems to be working as it should, even the display looks fairly bright. I had to relube the fan because it wouldn't always start on its own but after the oil worked its way onto the entire shaft it worked o.k. as well. If the fan was stopping that might have shortened the life of the faulty cap. I'll replace all of the power supply caps, just in case.

--- End quote ---

how do you get rid of that white glue sticking the caps together in the power supply and how do you re-apply that glue?
I know what it is used for but i don't know what is the material and where I can get it. It's used in many power supplies...

ArthurDent:
When I removed the bad cap I found on the power supply in my HP 53132A, I scraped the ‘glue’ off the board then washed the area thoroughly with isopropyl alcohol to make sure that the electrolyte residue that leaked out of the cap was removed and wouldn’t cause future problems with the board. After repairing the board I make sure the board was good and dry before reapplying power.

The ‘glue’ on this power supply board was hard (or had hardened with heat/age) but some glue used on other pieces of equipment I’ve had was somewhat flexible like silicone rubber sealant that you could buy in any hardware store. I’ve seen Dave in some videos and others refer to this flexible glue as ‘snot’. I wouldn’t get too carried away with applying it because you still want some air flow around the heat sinks on the board.   

HighVoltage:
Keysight just released a new firmware 3.00 for all 532xx Series counters.
The Option 150 - Pulse Microwave Measurements is now a free upgrade
And the "about" screen is more clear about installed options.

I updated the FW of my 53230A counter from v2.05 to v3.00


 

TheSteve:
So far I have found the html5 interface quite buggy.

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