Fender Blues JR - No sound. Here's what I've checked and looked at so far: 1) Powers Up 2) All tubes glow so heater circuit works 3) All tubes tested and all are functional 4)Speaker output jacks - 1 is a poor (loose) connection/other connects fine - both shot with DeOxit 5) Input jack is missing nut & washer - removed chassis from cab to test input jack - all points showed 0 Ohms on my meter Overview of chassis components: power tube sockets had very loose tube pin connections - tubes would literally fall right out without retainer. Preamp tubes were also very loose. Sockets are PCB mounted..Pots seemed all nice and properly connected to PCB. Both transformers are the exposed winding type and no visual evidence of burning or other failure. Visual inspection of circuit components revealed no burning. In fact, by all indications I am the first person to look at this circuit board since it left the factory. If I have time this weekend I will start testing solder joints and components. Any hints like known faulty components? Any mod ideas while I have the chassis exposed?