This is a DP7 digital readout for a milling machine and the reader shows no display. The only indication of power is the green LED for in/mm glows when turned on. The manual says that this is an indication that "the voltage of the power source is too low". There is a corroded 3.6V battery on the mainboard, but the net says that this battery only affects memory, and the corrosion hasn't damaged any nearby traces. The battery is not likely the cause. I scanned the power supply and I don't spot any bulged capacitors or burned components. It has a 6 wire output cable, but I have no idea how to even test the outputs from that. The wire labeled #1 has a black stripe, so I assume that's the ground. I have an email in to Newall, but from scanning around on the web, they have a reputation of not releasing their schematics and requesting that the devices be sent for service. I am an electronic novice. Where / how do I start troubleshooting this switch mode power supply? I have available a multimeter and one of the multifunction transistor, diode, ESR, etc. testers. I have an HP 54601 oscilloscope, but don't really know how to use it yet (it was too cheap not to buy it).