This problem came up before, and after I left the scanner turned off for a few days it fixed itself. This time, it powered down while I had it turned on for a couple of hours, and it won't come back up. I took the cover off the end close to the power plug and did a few rudimentary voltage tests. The switch and fuse are fine.
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Re: Scanner will not power up
Its just the faulty circuit of the scanner.the circuit is blown.and it needs to be checked with a meter to get the faulty capacitor.its a costly issue.as if its too old replacing the scanner is good choise.
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My belief is that it would be inside the scanner itself. In transparency mode the lamp may require more power and shutting off is a safety device if something is failing. Sadly, repairing a scanner costs almost as much as buying a new one.
sounds like an internal part is heating up and shorting out- I know this will sound crazy, but put scanner in fridge or outside if you have cold nights, and see if it stays running longer before quitting.
First get a multimeter and check if the power is going through the adapter to the end of the cord. The AC/DC transformer should output 32V DC at the end going into the scanner. If it has power, then the scanner power switch or the unit itself has failed. If there is no power passing through the cord, then try a new adapter. (You can find some by Googling - I saw some from various vendors.) If it is the scanner itself that has failed, check if it is under warranty.
If it is under warranty, contact HP for service. They may have the power cords as well but I didn't check that far. Otherwise decide if it is worth the service charges.
I hope this helps.
Cindy Wells (at least I do not think this scanner has a hard power switch on the side of the unit.)
Try using other application aside from the canoscan. Try to use Paint, you just click on File then from scanner. If it doesn't work, check the scanner itself, try to plug it in on another power outlet, if you are using a power surge try to unplug it and directly plug it in to the wall. You should notice the light on the scanner. If it is not litting up, you need to have the scanner serviced due to defective bulb
Open the CanoScan Toolbox.
Click the Save option.
Put a check in the box that states "Display the Scanner Driver".
Click the Advanced Mode tab.
Make sure Select Source is set to "Platen".
Click the Preview button at the top left.
If the error still occurs, then most likely it will be a service issue.
One thing to check...see if the inside lamp illuminates when you turn the scanner on using the power button at the back left side of the scanner.
Unplug the power supply from the power port on the scanner then plug it back in after a few seconds and power-up if it isn't already on. This happens to me a lot and this works every time. Frustrating though.
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
I had the same problem and I figured out how to fix it. First I unplugged the scanner. Then I bit the cables in half. Next I hit the scanner as hard as possible with a hammer. Then I put it on the floor and jumped on it a few times. After that I covered it with gas and set it on fire. Finally I peed on it as it burned. Then I got a new scanner- an HP.