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Re: HP 54720A PSU fault


 

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We'll, you did post to the entire group, Doug.? FYI.

Dissemble, BTW, means to hide one's real feelings or intentions.? As opposed to Disassemble, meaning to take apart.

Jim Ford?



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-------- Original message --------
From: doug <dmcgarrett@...>
Date: 4/5/20 4:16 PM (GMT-08:00)
Subject: Re: [HP-Agilent-Keysight-equipment] HP 54720A PSU fault



On 4/5/20 7:10 PM, Tim Tuck wrote:
> Hi Matthew,
>
> Nice meter,? I think I'll have to add one of those to the repair bench. At the moment I'm using a DE-5000 LCR meter
> which does a stellar job of reading things like ESR etc. but I've never tried to use it in-circuit, I've always
> de-soldered suspect caps to test.
>
> I've dissembled the PSU and I find that a number of components have incinerated themselves, see pics here...

FYI dissemble does not mean disassemble. You should look it up. (I'm not posting this to the list.)? --doug
>
> https://photos.app.goo.gl/Ri8ZFADuCvNYiKdj9
>
> Given I don't have a schematic for the PSU it would be a bit hard to work out what the components are and what their
> values are. Luckily I found a chap on eBay selling replacement PSU's for a small sum so I have one of those on the way.
> Once I get that I'll take note of the component values before inserting it in the CRO. I can then take my leisure in
> repairing the old PSU.
>
> cheers
>
> Tim
>
>
>
>



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