Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Had to resolder the interior power connector.

Found my old, dead HP 4200 scanner today while cleaning out a closet and tried to get it working again. Noticed the voltage of 12 volts DC stopped at where you connect the power plug in at the back of the scanner. Disassembled scanner and noticed only a 1 volt reading on the interior of the plug. Should have been 12 volts like the power source was sending to it. Resoldered the input connector on the 4200's electronic circuit board and now the machine might work. The scanner lights up now when plugged in and my old 1999 laptop Presario (model 1600) running Windows 98 recognizes it as a new device. It's been a while since it was used and I can't find the software disk that came with it anywhere. Maybe I can find a free disk or download somewhere and put the scanner back into service.