Anyone know what D511 is in a '07 Durabrand (Orion)?

[radiotvnut]

I was just given a Durabrand, built by Orion, model DTV1907A from 11/07. I found D511, a zener diode in the power supply to be shorted. I can't find any markings on the diode and I can't find any service information. The cathode terminal connects to the gate terminal of the switching transistor and the anode is connected to hot ground. I know this is just another POC $199 throw away TV; but, I thought I'd at least try to get it going since it has a built in DTV tuner. If I don't get it going, it will be just another dud to have to worry about throwing out. Any help will be appreciated.