Author Topic: HP 66332A A2 interface board repair  (Read 954 times)

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Offline v1t0r

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HP 66332A A2 interface board repair
« on: September 28, 2017, 03:17:56 pm »
Recently I got a hp 66332A with 760 option in a auction advertised to work properly.
Arrived well packed, in terms of appearance is as new, but when I turned on the supply I smelled something burning.
I quickly found the problem, a totally burnt capacitor on A2 board.
Now my  question, does anyone know the value of the capacitor marked on the image?

IMG_20170727_201209" border="0
 

Offline Ash

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Re: HP 66332A A2 interface board repair
« Reply #1 on: September 28, 2017, 11:44:17 pm »
Hi,

I just popped the lid on my 66332A, it is marked "225 20K", so 2.2uF 20V, 10% is my guess. It is identical to the one directly below it in your photo.

I just opened up my copy of the service manual (can be downloaded) and it doesn't document the control board, just the analogue board.. may be available in some other service manual for similar power supplies I guess..

Cheers,
Ash.
 

Offline Ash

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Re: HP 66332A A2 interface board repair
« Reply #2 on: September 28, 2017, 11:51:18 pm »
Here is a photo for orientation etc..

Ash.
 

Offline ElektroQuark

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Re: HP 66332A A2 interface board repair
« Reply #3 on: September 29, 2017, 09:43:23 am »
Tantalum cap, always waiting to attack!

I would change all of them.

Offline v1t0r

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Re: HP 66332A A2 interface board repair
« Reply #4 on: September 29, 2017, 04:59:42 pm »
Thank you Ash for all the work and quick reply.

Tantalum cap, always waiting to attack!

I would change all of them.
My intention is to change all.
I can not trust them, tantalus cap at this age are not reliable.
 


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