I have an RCA model 27V414T that I had hooked up to a converter box & rabbit ears. Swapped it for another for 18 mths, during which time it was stored in a spare bedroom, no water, sun or vibration. Tried to put it back into service & got the blue screen w/ "Unusable Signal" on it. I know it CAN be hooked back up, but can't seem to get the correct configurations.