We've been buying used PowerVu's (D9850) off Ebay for some of our re-broadcast partners and have had pretty good success, but have run into problem with one unit that powers up and does little more than shows a blank green screen (on the IRD itself, not the monitor). We know that our incoming C-band MPEG/2 signal is fine because we are able to get several other IRD's to work fine, but this one does not want to even initialize when it turns on. Even units that aren't even connected to a dish will at least run through the initialization process and provide some kind of menu prompts when they first are plugged in, but not this one. Is this unit a great candidate for the dumpster or does anyone know of a quick fix.