Question about HP 4570C Flatbed Scanner

1 Answer

I've lost my transformer for the scanner. What is the voltage and amperage needed to drive the scanner?

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

24 volts at approx 1.2 Amps

Posted on Jul 17, 2011


1 Suggested Answer

  • 2 Answers

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

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.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

What is the input and output amperage of 15G fender guitar amp.trandformer?

Transformers change the voltage and not the amperage. The input would be 110-120 volts. The output voltage would be stamped on the transformer or the circuit board where the transformer is mounted. It either steps it up or down. Make sure to disconnect it before investigating. Good luck!

Mar 13, 2016 | Fender Music

1 Answer

I've lost the charger to it and I don't know what charger to use or amp so I can't use it unit its charged?

Sometimes the voltage is printed or cast into the plastic near where you plug in the power plug, look carefully it may be there. Once you know the voltage you can estimate the amperage. You can go as high (but not lower) as you like on the amperage since transformers are self regulating and only supply the amount the unit needs, not necessarily the maximum amount its rated for.

Mar 11, 2015 | Heating & Cooling

1 Answer

Need more power

No advantage; no more power. P= I x E

Amperage times the voltage. If you increase the voltage the amperage will just go down .

Jan 02, 2014 | Dent Fix Fix Dnt-595ii Shark 2 Spot Weld...

1 Answer

Sanyo sound system built-in transformer amp usage

If no one has the specs on this transformer but you know the power rating, apply this formula: Power/Voltage= Amperage. It might not be a big help but it sure will put you in the right range. The other solution would be to obtain a schematic or parts list for the unit. Hope this helps!

Nov 30, 2013 | Sanyo Audio Players & Recorders

1 Answer

I lost the power adapter and I need to know the output voltage

I believe it is 12V 1.25A (you can use 12V 1.5A or 2A) Probably centre +ve, but look carefully at the scanner where the power lead plugs in, it may show the polarity and voltage on the plastic near the hole. Please report back? regards

Jan 17, 2011 | BenQ Scan to Web 4300U Flatbed Scanner

1 Answer

Astra 20000U lost the power supply where to get replacement transformer?

if you can see the voltage and amp requirements either on the machine near where it would plug in or a manual then I have picked up the transformer at radio shack and they have a set of different ends to plug in on the DC side

Oct 01, 2010 | Umax Astra 2000U Flatbed Scanner

1 Answer

Power connector

Usually, devices will have the voltage/amperage embossed on the plastic near where the power cord will connect. If not there, recommend looking online at website or contacting BenQ support for spec.
Also, note that polarity is important when buying replacement power connectors and there is also usually an embossing that shows if it is pos/neg.

Feb 10, 2010 | BenQ Scan to Web 4300U Flatbed Scanner

1 Answer

Transformer problem

HI amperage is1.25A Have the same problem myself. only one that I can see avaible is from the Xerox UK website @ £15.00.

Mar 05, 2009 | Xerox One Touch 2400 Flatbed Scanner

Not finding what you are looking for?
HP 4570C Flatbed Scanner Logo

Related Topics:

46 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


Level 3 Expert

1089 Answers


Level 3 Expert

102366 Answers

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

Answer questions

Manuals & User Guides