Just picked up this receiver at a garage sale and as I had thought it has trouble. Standby red light comes on but nothing else. Haven't hooked up any speakers or inputs but am sure more displays should be up. Thinking maybe the power source is shot. This guy had it in his garage gym running sound and tv input/output while he played with his dumb bells. AZ ain't the place to run stuff like this in a non- air conditioned environment. But I thought it might be salvageable.. Am I screwed?