This Denon AVC-3800 A/V amplifier was listed on ebay as 'faulty no sound output' however it did power up. So i made the seller an offer and secured the amp for £20. These Denon amplifiers are superbly built and heavily fused so i was hoping that a quick fuse change would solve the problem. Well obviously that would have been way too easy!
After checking all the fuses and having a good poke around with the multimeter i discovered that one of the 2 main transformers only had a voltage output on one of it's secondaries. It's the transformer the top of which you can see to the left in the picture.