I've got a problem with my Sony STR DB940 where when the amp is first switched on the center channel will switch on and off for about half an hour until it's warmed up. There's a definite 'click' inside the amp, much like a reed switch sound, and with the case off I've found poking the circuit board will get it to click back in. It's got progressively worse and more difficult to get it to stay on until it's warmed up, although sticking it on it's side seems to help. Dry joint perhaps? Problem is, how would I go about finding where it is? There are a few layers of boards in there and I'm not keen on pulling it all apart, especially with huge capacitors in there with the potential to deliver a fair shock I should think. Or should I just bin it and get a new amp? I've had it for a number of years now and I even got it dead cheap due to a screw up at RicherSounds (it was under their 50% buyback warranty think but they rang up 100% on my old amp and so it only cost me £99. I even questioned it and they just agreed it was a good deal ). I've no idea what's good now though. I'm thinking maybe the pre/power amp route is perhaps the next step to take but I probably need better speakers too (mine are an old Mission Cinema pack but I forget which. No sub). With an integrated receiver I'd rather get one with DAB now if it has a receiver at all, but I don't think there are any?