Question about HP ScanJet 3970 Flatbed Scanner

11 Answers

HP Scanjet 3970 Scanner

Here at my workplace I have an HP Scanjet 3970 Scanner and all the connections are fine, everythings plugged in, but it's still not working and nothing lights up.
 
Last I used it was about 2 weeks ago and it worked just fine then.  I also had our own department IT technician take a look at it and noted that "it's just burnt out."
 
Any suggestions as to where I can take it to get repaired at minimal cost?  Please let me know as I am unable to purchase another one per my boss.

Posted by on

  • 6 more comments 
  • Anonymous Nov 07, 2007

    Same thing happened to me. It worked fine for a year and now it is completely dead. The wall wart power supply is fine and the unit is getting power.

  • Anonymous Jan 03, 2008

    My scanner will not light up....I have tried HP support but they offer no help...Is there anyone who does repairs on these products or do they just expect us to purchase new equipment??????

  • Anonymous Jan 24, 2008

    hp 3970 scanner 22 error message

    best regards

    Seref

  • kingmi Feb 21, 2008

    Add me to the list. I don't use it very often, and the last time there was no hint of a problem. Now it is completely dead. I checked the power supply with a voltmeter and it shows 12.26vdc.
    Any suggestions?

  • lwp2d Mar 17, 2008

    Me too. Scanner worked fine on my home PC. I tried to load software on the MAC and then use it. Dead. No lights. Doesn't get recognized. Shows some weird conflict. The MAC is a smart machine. If I have to bet, it is the scanner somehow. They are a throwaway product I guess, I think mine was less than $100 but I used t so seldom, that the costs is high, usage wise. I am not going to buy any more HP stuff. I am OK with a cheap flatbed for home use, but it should pretty much work forever. They are not complicated. L. William Porter Tallahassee

  • sunmoon0 Nov 24, 2008

    Scanner was working fine a couple of weeks ago, then one day I get an error message saying "Scanner could not initialize. Scanner not found". Unplugged everything, reinstalled driver, replugged everything -- nothing. Machine doesn't make the noise it usually does when it's powered up. Hate to throw it away if there's a simple way to fix it.

  • peanut86a Feb 26, 2009

    Anyone have any idea where you can buy the 12v 1250mA fuse that's blown? Tried a computer fix-it store, Radio Shack, even Autozone at the recommendation from the computer store. No one has this fuse.

  • the_JP01 Apr 13, 2009

    My scanner has the power supply fuse blown and I can't find it online. Could someone give me a clue where to buy it? The fuse is 1.25a 12v

    Thanks,

    JP

×

Ad

11 Answers

  • 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.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 7 Answers

The fuse is there to protect the scanner's circuitry in the case that the 12V, 1.25A power source, the transformer, adapter, wall wart, or whatever you wish to call it, goes above the rated values. No higher or lower V or A should make it into the device in order for it to operate within its designed range and fail. Usually there is a slight surge of some sort that blows the fuse caused by a lightening strike near by, static, or any # of other possibilities. The adapter itself is usually weakened over time, rather than the source of this increase. When the adapter goes too low, the scanner will not operate properly and usually windows will stop recognizing it as a usb scanner. At this point the various scanners on the market will give various different reactions that you'll see described in other problems in this forum, but they are all related to a reduction of the input to the scanner resulting in insufficient or erroneous output signals to the computer and windows various responses. Although the fuse is the first point of protection of the scanner circuitry, it isn't needed most of the time if you use a good surge protector to prevent any extraneous voltages from getting into the adapter in the first place. In other words, the surge protector is a 'fuse' for the adaptor, and subsequently, the scanner itself. So my recommendation for those who have equipment that is normally much more difficult and expensive to repair properly, such as a soldered-in, blown fuse (which would be professionally repaired by replacing the entire circuit board rather than just the fuse), is to bypass the fuse with a piece of wire soldered between the two metal end-caps across the top; a very simple, very quick solution. Then use a good surge protector as your 'fuse' to protect the scanner's circuitry. The obvious caveat is that you are taking responsibility for disabling the protection that was originally designed into the scanner to keep the delicate circuitry from failing due to extraneous voltage surges. There is very little risk of fire, but 100% risk of having to have the very same circuit board replaced or buy a new scanner.

Posted on Jun 10, 2009

Ad
  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 2 Answers

Bridge the fuse with either a piece of tin foil...ot a soldering gun would do the trick. I had the problem of the scanner not turning on with the correct power supply and everything else working correctly. My computer also didnt register the scanner and the add hardware menu didnt show that I had it connected to the computer. Thanks to the questions here, I opened my scanner up found the tiny itty ***** fuse, bridged both ends of the fuse, put the scanner back together, and it is working just fine now!! Cheers, hope this helps!

Posted on Dec 06, 2009

Ad
  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I just found the same thing--blown fuse that I jumpered and the scanner lit up! I also found that the back panel calls for 1.25 amps at 12 volts, while the manual says it needs @380ma. nice way to overload the circuit, HP.

Posted on Jun 12, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I just found the same thing also. Used jumper cable across fuse, and scanner fired up. Sheesh. Off to Radio Shack tommorow to buy new fuses and a new power supply.

Posted on Oct 05, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Hey everyone, the 12v 340mA rating is for the transparent materials adapter (TMA) not the scanner itself, as it says in the manual above the section where that spec is listed: "Note: the following specifications refer to the document lid transparent materials adapter and not the scanner."

So the 12v 1.25A rating is probably correct for the scanner, it may just be the power supplies are cheap and probably don't stay in a reasonable range.

That aside, where is the fuse located that seems to be blowing?


Posted on Jun 25, 2008

Failed to create fe;\scan000.1tif

Posted on Jun 14, 2008

  • 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

Thanks txistu. I did as you suggested, and sure enough the fuse was blown (a check with a vom confirmed this). I suspect the the ac power adapter is probably not of a good quality. Besides, hp's own specs state 12v @ 340ma for this unit. The adapter that came with this unit is rated at 1200ma. It is my belief that poor power regulation was the main culprit. I am going to use another power adapter closer to hp's own specs.

Posted on Jun 05, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Today I realised I have the same problem. DC power tested and 12V-OK. Unscrew the four screws and I've seen there was a fuse inside, 1.25 A 250 V; it was burnt, but it is solded to the circuit board. I'll try getting a new one and solder it, and if I can't get no one, I'll try with a wire before drop it to waste.

Posted on Apr 20, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Add me to the list of people who will NEVER buy ANYTHING from HP again. Scanner worked 3 weeks ago. Upgraded OS to XP Pro from XP Home. Reinstalled software - NADA ZILCH NOTHING. Computer has no clue the damn scanner even exists. No lights, no nothing. USB port is fine, power outlet is fine. scanner is for crap. Help from HP??? Don't make me laugh. HP could care less about customers once they get your money. As far as I'm concerned HP can inhale **** through a straw.

Posted on Mar 03, 2008

Same problem here.. everythin is plugged in and the unit seems completly dead.

any news on that problem ?

Posted on Feb 14, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Here at my hone I have an HP Scanjet 3970 Scanner and all the connections are fine, everythings plugged in, but it's still not working in properly.


plz suggestions me how can solved this problem?

Posted on Oct 02, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My hp scanjet 3970 wont work on my windows 7


I have win 7 & it works....I don't use any hp software, just plug it in
& 7 downloaded basic drivers for it-simple scanning only

Feb 10, 2011 | HP ScanJet 3970 Flatbed Scanner

1 Answer

My hp sacanjet 3970 doesn't work


Most likely cause of the "Scanner could not be initialized" error on the HP Scanjet 3970 is due to using an incorrect power adapter and cord -- the only power module and cord that work for the HP Scanjet 3970 are these part numbers: 8120-6260 for the power cord and L1970-80003 for the power module / AC adapter I hope this info helps you.

May 23, 2010 | HP ScanJet 3970 Flatbed Scanner

1 Answer

HP Scanjet 3970 has no power


What is the temperature at the plug/transformer? If it is cool to the touch after being in the live outlet for a while, that is the source of your problem and it needs to be replaced. You will need to match the plug size and shape as well the voltage for an AC/DC transformer. The voltage is usually on the transformer but can be hard to read (highlight it by rubbing chalk over the lettering if the letters are molded into the case).

I hope this helps.

Cindy Wells
(I do not know if HP sells replacement transformers; Radio Shack often has suitable ones but you do need to match the details.)

Feb 12, 2010 | HP ScanJet 3970 Flatbed Scanner

1 Answer

My HP 3970 scanner has been working for years. No


Sounds simple enough. You will have to do a couple of things in order here. Unplug the cable from the back of the computer, and the scanner itself. Then unplug the power cord from the wall for the scanner. Wait about 20-30 seconds, then plug the scanner back into the wall. Now plug the cable in to the scanner, then the computer. Turn on the scanner and it should work. If by chance this does not work, then you may have to reinstall the drivers. If you don't have the disc, check out the manufacturer websight support section. Good luck

Feb 04, 2010 | HP scanjet 3970 digital flatbed scanner

1 Answer

Hp scanjet 3970 won't power on


Is the AC adapter getting warm when it's plugged in?

No fuses inside.

Jun 10, 2009 | HP ScanJet 3970 Flatbed Scanner

2 Answers

Fuse for hp 3970


After you have UnScrewed and Opened Up the Scanner.
On the Circuit Board (Green Board with Electronic Components) just where you Plug in the Power Pin there is a Small Glass Tube Looking Component.
You need to replace that with a 1.2mA Fuse.

Hope this Helps

Apr 03, 2009 | HP scanjet 3970 digital flatbed scanner

1 Answer

Incompatability between hp scanjet 3970 and Windows


Hi, just go to HP drivers and solutions, i have Vista 64 bits.


Rgds, Auke.

Mar 20, 2009 | HP scanjet 3970 digital flatbed scanner

1 Answer

Scanjet 3970


not sure what you mean by what plugs go where but here is a link to the user manual.

http://h10032.www1.hp.com/ctg/Manual/bps05795.pdf

Jan 28, 2009 | HP scanjet 3970 digital flatbed scanner

1 Answer

Scanjet 3970 and Vista


since This driver enables scanning with the Windows Photo Gallery on Windows Vista or the Scanner and Camera Wizard on Windows XP. some features may no longer be available when using this basic driver.feature driver for Windows Vista or Windows XP Professional x64 . You can upgrade to an HP product or driver that is fully compatible with Windows Vista or Windows XP Professional x64 that will support the additional features

http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=15179&prodSeriesId=298547&prodNameId=298549&
swEnvOID=2093&swLang=8&mode=2&taskId=135&swItem=sj-47402-1

Aug 22, 2008 | HP ScanJet 3970 Flatbed Scanner

Not finding what you are looking for?
HP ScanJet 3970 Flatbed Scanner Logo

4,176 people viewed this question

Ask a Question

Usually answered in minutes!

Top HP Office Equipment & Supplies Experts

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

Ben Johnson

Level 3 Expert

685 Answers

mukhtar21 shaikh
mukhtar21 shaikh

Level 3 Expert

2022 Answers

Are you a HP Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...