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 !






12 comments:

  1. 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

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

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

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

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

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  6. Its a 2.4 homs resistor cheout the link i post before

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

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  8. Same one blown in two power supplies here also.

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

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

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  11. Thank you so much for sharing this worth while to spent time on. You are running a really awesome blog. Keep up this good work


    123.hp.com/ojpro8610

    ReplyDelete