Question about Visioneer OneTouch 5800 Flatbed Scanner

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Visioneer 5800 power supply

Somewhere in the many moves we have lost our power supply, I don't want to spend the $20 that they want for a new one, can anyone tell me the voltage requirements on the power supply? I have so many others lying around, one of them surely fits.

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Re: visioneer 5800 power supply

My power supply for my Visoneer 5800 appears to just have kicked the bucket... And, I stumbled across your post in a search for a replacement.

Anyhow, here are the specs off mine:
YHI Power Adaptor
Model: YS-1015-U12
Input: 100-120V 60HZ, 0.45A
Output: +12VDC/1.25A

Posted on Dec 05, 2010

Re: visioneer 5800 power supply

It's almost certainly 12 volts. However....

You really don't want to be messing about with experimenting on power supplies.

You could get the wrong voltage and fry the scanner.

You could more easily get the wrong polarity of the plug and fry the scanner. (Polarity means whether the inner pin is "+" or "-" and it is necessary to get this right.)

Even if you find the right voltage and polarity, you might get a plug that's just a little too small and you'll be forever frustrated when it keeps falling out during a scan.

I recommend either dropping the $20 on a new power adapter or perhaps even considering getting a new scanner altogether. I don't know how old you current one is, but if it's more than a few years old I bet you could pick up a new one that is better.

Posted on Dec 16, 2007

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5800usb says there is a lock on the bottom of the scanner. to click OK after you have unlocked the scanner. I do not find a lock anywhere on the scanner

There is no lock on the Visioneer 5800 USB scanner. I had the same problem with my 5800 and finally noticed that the scanner lamp was going bad. I replaced it with a good lamp out of an old Acer parallel port scanner that even had the same plug, noticed that an older HP that I have sitting around would have interchanged as well. My 5800 now works great and has been tried on both 98SE and XP with SP2.

Dec 04, 2009 | Visioneer OneTouch 5800 Flatbed Scanner

1 Answer

Keep getting error message to unlock scanner.....says it can be unlocked from the bottom of the scanner, but I don't see it.

My one touch 5800 USB scanner worked great on XP for over a year and then started giving me the unlock the scanner message. I tried different power supplies, reloading software and moving it to a machine running 98SE and nothing improved. I left the cover open and noticed that the lamp was fairly bright at the sides but very dim in the center. I replaced the lamp with one from an old parallel port scanner which was in good shape and it now works perfectly on 98SE. I have not connected it to a XP machine yet.

Aug 26, 2009 | Visioneer OneTouch 5800 Flatbed Scanner

1 Answer

My 5800 keeps telling me to unlock it when I click scan, but I can't find the lock anywhere.

The 5800 scanner does not have a physical lock switch. DO NOT attempt to open the scanner and unlock the hardware. This could be either a hardware failure or software
Toggle the lock switch on the scanner leaving the switch in the unlocked (open padlock) position.
Ensure you are using the correct power supply for your scanner. If you are using a power supply that has the incorrect DC output, you will get a scanner locked error message. This flatbed scanners has I believe 100-120V AC input and 12V DC output.

Plug the power directly to the wall, not a UPS battery back-up, power strip or surge protector. Power fluctuations from a UPS battery back-up, power strip or surge protector may be causing this error. If all this fails try reinstalling the scanner driver


Aug 18, 2009 | Visioneer OneTouch 5800 Flatbed Scanner

1 Answer

How do you unlock a visoneer scanner 5800 I got back from a trip and tried to scan something and the bar is locked now and won't move more than an inch. The error message says to unlock it but I can't find...

Ensure you are using the power supply that was provided with the scanner.

The power through the strip may be fluctuating and causing the problem.

Download and install the driver provided on the 5800 USB support website.

Jul 13, 2009 | Visioneer OneTouch 5800 Flatbed Scanner

1 Answer

Same problem

Guess what..

I have set my PCI bus speed back to 133mhz which Ihad overclocked..USB communication was the problem. I also had a new power supply as well.

Works with XP SP3.

Jun 22, 2009 | Visioneer OneTouch 5800 Flatbed Scanner

1 Answer

5800 Visoneer Scanner: Getting message that I need to unlock it...

Power supply has to put out 1.25A. If it is either too weak due to age, not directly connected to the wall where it can get the power it needs or the wrong replacement, it won't work and you'll get this error.
Also, the voltage is 12V (positive tip).

Feb 02, 2009 | Visioneer OneTouch 5800 Flatbed Scanner

1 Answer

Software to makE ONETOUCH VISIONEER 5800 scanner work with WINDOWS VISTA

You can go to and order the disk. It is free but the shipping is $9.99.

Aug 03, 2008 | Visioneer OneTouch 5800 Flatbed Scanner

1 Answer

How to unlock Visioneer OneTouch 5800 Scanner

i was getting this message when i was using the wrong power supply, i used a diffrent power supply and restarted the computer and it no longer says it, so i couldnt tell you exactly which one made it work, but now i get a box telling me i dont have enough disk space??? any anwsers for that??

Jun 25, 2008 | Visioneer OneTouch 5800 Flatbed Scanner

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