Electronics > Repair

Agilent 53132A Counter Repair (FIXED and Upgraded)

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HighVoltage:
It seems that there are at least 2 different VFDs used in these counters:

One made by itron / Japan and one made by Samsung in South Korea
Both are interchangeable, but the metal frame around them has to be bent a little, to make the itron version fit, when the samsung was installed before.

Jf2014:

--- Quote from: texaspyro on December 27, 2017, 04:41:23 pm ---Where are you getting the VFDs?

--- End quote ---

Probably in eBay

https://www.ebay.de/itm/Agilent-HP-Frequenz-Zahler-Display-Itron-CC1187G/222736101378

chinapp:
I encounted the same error: fail FRN /fail mesr ,but the falt part is not the U40 IC

HighVoltage:

--- Quote from: chinapp on February 27, 2018, 09:23:51 am ---I encounted the same error: fail FRN /fail mesr ,but the falt part is not the U40 IC

--- End quote ---
FRN errors are not good!
Usually it is the front end that is dead.
You need to look at the the first amplifier stage, which is most likely dead.
But the service manual and schematics are available and you can find your way through and get it repaired.

analogRF:

--- Quote from: HighVoltage on December 23, 2017, 03:58:22 pm ---Ok, the first one is fully cleaned up and ready to be assembled again.
It was so much sticky, nasty dirt everywhere, it took several deep cycle bath tubs in pure alcohol, to take it all off.

Repair so far:
1. One power resistor exchanged in the power supply
2. All 5 BNC connectors replaced to new
3. New VFD installed

Seems to work again, the new VFD is nice a bright.

--- End quote ---

Hi, where did you get the new VFD? I need to replace mine as it is very dim with non-uniform intensity on various segments

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