Question about Visioneer OneTouch 7100 Flatbed Scanner
I bought a Visioneer 7100 flatbed scanner (without a power adapter) at a thrift store. I was able to test it at the store with an appropriate adapter (12VDC x 1.25A) and the lamp came on, so I figured the scanner was good. When got home I found a 12V-1.25A adapter and had the scanner hooked up ... in less than about 30 seconds after plugging it in and turning it on I heard a 'pop' or 'snap' from the scanner, and I unplugged it. I turned out that I had used a 12V -AC- adapter; I tried it with a 12VDC-1.25A adapter and it didn't work at all. I took the scanner apart and inspected the lamp inverter card and the card that the CCD is on, and I didn't find anything that appeared to be burnt or bad. There's a third board that's covered on the component side with a metal shield that has to be unsoldered to be removed - I didn't find anything suspicious on the underside of the board. I can't tell if the CCFL is bad or not. What do you suppose is wrong with the scanner?
The diode on the Power Supply Shorted and Possibly the Regulator also Check the Power Supply areas ttech
Posted on Jul 20, 2007
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Posted on Jan 02, 2017
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