Question about HP Scanjet 5470c Flatbed Scanner

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No power No indicator lights or any sounds when plugged in and power button pushed. Can't seem to find anyone who fixes these. I always liked the quality of the output. Is it even worth trying to fix?

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  • Anonymous Nov 07, 2007

    I was using my HP scanjet 5470c and scanned several documents. The power just went out and I could not turn it on again. I'd like to know what the problem is and get it fixed. I love using this scanner.


  • rdob Nov 08, 2007

    Same problem - Scanner was on, suddenly turned itself off - and now will not turn back on. Almost like something burned out (fuse?, transformer?)

  • Anonymous Nov 19, 2007

    same thing...

  • chsnamu Dec 18, 2007

    Same problem.

    I was going to try a new power adapter, as anyone tried that yet, or contacted HP?

  • Anonymous Jan 09, 2008

    I am a trained electrican and I just checked the power supply and mine is bad. I just got online to look for one if any knows were to get a replacement please notify me.

  • Old_Brown Feb 11, 2008

    My 5470C scanner stopped turning on after many turn-ons spuriously - when my Mac Mini - on the same powerstrip -had to be turned off/on when it crashed when and could not be reset. After a while the 5470C just would not turn on. I just tried it tonight and - yes- it does NOT turn on. 

     The HP "Wall Wart"does NOT give any output voltage  when plugged in & not connected to the scanner. 

  • Swordsmith Apr 05, 2008

    My HP 5470c worked fine until my computer crashed, and sat idle for two months while I built a new system. Now - it won't power on. No lights, no response to buttons; everything correctly cabled, s/w installed on new machine. Can't find a fuse on the unit that could be blown, and the power outlet is good.

    The HP troubleshooting is not helpful because the system does not recognize the scanner, so I can't change any settings.

    I suspect the power transformer, but it seems strange that it died while not in use. Frustrating, as it is a good scanner when it works...



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Purchased an exact replacement for the power cable (less than $20 on Ebay) - scanner powers on!

Posted on Dec 27, 2007

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I've done it, using an adjustable power supply all i needed was 12VDC - 2Amp, the power connector going to the scanner is a 4 pin mini-DIN male, so i've ripped of the cable from the original bad power module, cable has inside 2 wires one black one white and a shielding. Black and schielding are connected together and are going to the minus, the white one is going to +12V

guess what? .... my scanner is working again

Posted on Dec 27, 2007


I would replace the power module (adaptor). Same issue happened to my 5400c in early November, too!

Happy Holidays!

Posted on Dec 01, 2007

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