Sunday, 9 October 2011

HP Officejet 6500 E709a Series dead faulty PSU 0957 2271

A HP Officejet 6500 E709a printer had a dead / faulty PSU. Printer would not power on and no light on the power supply.



Opened up, nothing obvious to see. A check of all the discretes showed the diode circled was short. Out of circuit it still measured dead short.

A VSB3200 was the culprit, a 300v 2A Schotcky rectifier.

(picture shows new diode fitted and dead one out)



Tested working ok !






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15 comments:

  1. Joel A. Martinez18 April 2012 at 07:23

    Hi...

    I have he same power supply, the 0957-2271, but the R48 has burned out.I need the value of this resistor please. The Resistor is in the green side of te board, attached to de pin 1 of the power transistor 07n65c3.
    Thanks!

    My mail is fox.misionero@gmail.com

    ReplyDelete
  2. Joel A. Martinez18 April 2012 at 07:27

    Sorry, the resistor is attached to the pin number 3 of the power transistor

    ReplyDelete
  3. Lowfinger18 April 2012 at 11:34

    Hi, sorry I dont have access to this PSU any more to have a look !

    ReplyDelete
  4. Oarlock22 June 2012 at 11:36

    R48 burned in mine also. Input fuse blown too. Joel, did you fix yours?

    ReplyDelete
  5. Anonymous20 September 2012 at 10:45

    http://www.ifixit.com/Answers/View/82602/SMD+resister+blew+out.+Want+to+replace+but+can%27t+identify.

    ReplyDelete
  6. Anonymous20 September 2012 at 10:46

    Its a 2.4 homs resistor cheout the link i post before

    ReplyDelete
  7. Sascha Grant17 October 2012 at 02:09

    LOL I've had the same resistor blow.. Hmm... fault with the design?! @Shayro - thanks for the link!!

    ReplyDelete
  8. Andy2 April 2013 at 12:53

    Same one blown in two power supplies here also.

    ReplyDelete
  9. Csóka Balázs9 April 2013 at 00:45

    Same problem: R48 resistor (2R4) and fuse 250V/4A blown.

    ReplyDelete
  10. BONBON14 July 2013 at 03:57

    Exactly the same problem, R48 + fuse blown
    Must be desing issue

    ReplyDelete
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