You could try substituting the 12v supply. Unplug from the mains, remove the 110 cover and you'll see a standard molex power connector in the back of the drive. Use a desktop, cover off and unplug the disk/dvd supplies and the cables should reach to the 110. Plug in one of the molex into the tape drive and power on the desktop. If it is just a power issue with the 110 the drive should power up. Or if you have access to a volt meter, just test the voltages at the molex connector.
Hello everyone.  I have a PowerVault 110T LTO-3 out of warranty. Last week I updated the firmware to v.93GP, A07, and everything went ok. However, I tried to switch it on yesterday, and nothing happened. The led and display didn't light. It looks like a power supply problem, but I'm wondering about the firmware update. Can you help me?  Thanks.
PowerVault 110T LTO-3 doesn't work after firmware update