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HP 54111D Power Supply Issues

Question asked by redders03 on Jun 21, 2013
Latest reply on Nov 25, 2014 by rwas

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Hi all, recently acquired this type of scope, however from testing the analogue power supply it shows that the supply for the fans is not working, the led is not lit and the set points show there is no voltage present. Also the 18+ is not working

Any Ideas ?

Alex

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algoss Jun 22, 2013 7:04 AM
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Good luck...

This scope went out of support 14 years ago, which means HP stopped selling it ~5 years before that.

Al
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- redders03 @ algoss on Jun 22, 2013 7:19 AM
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  The Circuit diagrams would help if these were available, they are not included in the service manual, it seems a waste if it could be a simple fix !
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  - pulsingwave1 @ redders03 on Aug 3, 2013 8:24 AM
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    Hi redders03
    
    Did you find the circuit diagram of the analog power supply?
    I have one of the HP54112D which must be the same.
    If you are interested ?
    I have a similar problem with the power supply on my HP54112D.
    U1 PWM controller has exploded with some other HS components.
    I'm looking for this IC (U1 is XR 1826-1120). But it is not readily available.
    If anyone has any info on this circuit, I'll be happy.
    
    Sorry for my english, I'm french
    
    Regards
    Pulsingwave1
    
    Edited by: Pulsingwave1 on Aug 3, 2013 9:22 AM
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    - redders03 @ pulsingwave1 on Aug 3, 2013 10:19 AM
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      Hi Pulsingwave1
      Thanks for the response, so far I have not found the diagrams so if you could send me the one that you currently have that would be greatly appreciated.
      Also there is this site which I found which may be able to help with the part
      
      http://www.qservice.eu/shopdisplaycategories.asp?id=42
      
      Hope this helps and thanks
      
      Redders03
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      - pulsingwave1 @ redders03 on Aug 5, 2013 9:35 AM
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        Hi redders03
        
        Please, look at your private message in this forum under "inbox"
        I put a message.
        
        Regards
        Pulsingwave1
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    - rwas @ pulsingwave1 on Nov 25, 2014 1:18 PM
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      I too am interested in the schematic for the hp 54112 power suppply. Is it still available?
      
      Thanks.
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