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?

5 more comments
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.

SAS
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...
same thing...
Anonymous 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...

3 Answers

rdob

Level 1:

An expert who has achieved level 1.
Contributor
1 Answer

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

Posted on Dec 27, 2007

Anonymous

Level 1:

An expert who has achieved level 1.

Corporal:

An expert that has over 10 points.

Mayor:

An expert whose answer got voted for 2 times.
Contributor
3 Answers

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

Anonymous

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

Happy Holidays!

Posted on Dec 01, 2007

Add Your Answer

Upload

Upload an image from your computer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

Loading...

Include an image. It's worth a thousand words.

prev next

Related Questions:

0helpful

1answer

Why is the Jandy RS6 Intellitouch Controller Extra Aux / Solar power plug always ON/Powered?

Your logic seems workable...
(I got nothing ... should work).

Trouble shooting says to check & clear "phantom"
programming... (Pg. 30: sounds like hokum 2 me).

My best advice..
Go to page 40 and contact their customer support.

Jandy AquaLink RS Installation Manual Warranty

1-707-776-8200

Carnac the Magnificent

Read full answer

Jun 22, 2014 • Jandy AquaLink RS All Button, Wired, RS6...

0helpful

3answers

False empty toner reading

The problem can be may this however hard resetting it can fix the issue

1. Turn machine on while pushing and holding the TWO up/down menu buttons at same time.
2. Menu window will show "OKI USER"
3. Scroll to " Engine Dialog Mode" is indicated. Push Enter button.
4. "Diagnostic Mode xx.xx.xx S-Mode is indicated.
5. Scroll to "NV-Ram initial" is indicated. Push ENTER.
6. Window shows "NV-Ram- Initial Table 1".
7. Push ONLINE and ENTER Buttons simultaneously and HOLD for 10 seconds after you see "Executing Reset" appear in menu window.
8. Restart printer.

Read full answer

Jul 12, 2008 • OKI C5500n Printer

0helpful

1answer

HP Pavillion ze5700 laptop wont start up

Hi, seems to be a wellknown problem of Pavillon NB's. Looks like that the northbridge chip on the mainboard ist unsoldered. Even if somebody tells you do fix it by dropping the mainboard into your baking oven for a few minutes, don't try it! There are specialists who have the technical equipment and the knowledge to fix that problem. But in most cases it would not held a long time.
Hans

Read full answer

Sep 09, 2017 • Computers & Internet

5helpful

1answer

Dryer is plugged in and the power seems to be working fine...for example, the light is on when I open the door and the button for the light works when I push it on and off. However, when I push the start...

this may help;

http://www.partselect.com/dryer+dryer-wont-start+repair.htm

Read full answer

Oct 24, 2010 • GE Dryers

0helpful

1answer

2004 silverado z71 crew cab 3 button shift selection 2H 4H 4L eratic shifting seems like its in high gear at take off indicator light may show 2H, neutral or 4L shut the engine off then at next engine...

two problems with these trucks the push buttons there self and the encoder on the transfer case.

Read full answer

Oct 18, 2010 • Chevrolet Silverado 1500 Cars & Trucks

1helpful

2answers

Power Issue

Now,u plug in the tv u get a solid red standby power red LED light in the front of the LCD panel right?When u push the power button on the remote u hear a clicking sound?Only one clicking sound,not the power supply board problems.It the Tuner board problems.But u can make sure it the power board problems or not.By taking the tv aparts check the power board,that board where the a/c power cord goes into it.Look all around the power supply board check for these leakage capacitors,they alway bulges up it top or puff up it top.No bad leakage capacitors,then it not the power supply board problems.

Read full answer

May 14, 2010 • Haier HLH406BB 40 in. LCD HDTV

2helpful

1answer

Astar LTV-32HGB blinking power indicator light

this sounds like typical power supply problems. these units have a stand-by power thats always active;even when unit is off. this allows the settings to be remembered by the u-con. (microprocessor) when you unplug the unit it will reset to factory default, thus erasing faulty power-supply data from improper voltages.(usually low readings) swollen capacitors on power-pcb will effect operation. recommend replacement of all electrolytic caps on power board. even smd's (surface-mounted-devices) can be leaky. they can be checked in circuit with an ESR meter. this is an analog sweep meter (needle gauge, not digital) that can detect faulty, leaky capacitors.

Read full answer

Mar 09, 2009 • Astar LTV-20PW 20 in. EDTV-Ready LCD...

0helpful

1answer

Dell Latitude cpx

Well, when the power supply is plugged to the computer, there should be a light indicating that the battery is charging. One other thing, does it turn off completely (I should have asked this first) or is it just blocking? No messages on screen?

Read full answer

Oct 15, 2008 • Dell Latitude C610/C600 Notebook

0helpful

1answer