nad c352 problem

[Chrisr3521]

hi, i have a strange fault with my nad c352 in the way of after about 4 hours of play the right channel starts to hiss louldly, after switch off i tried again the following morning and the same, tried again a few days later and its back to normal, no sign of hiss? has anyone got any suggestions of what this could be? i have resoldered the output trannys because the joints didnt look very good, but after this i am at a loss!

thanks
chris

 

[krmaudio]

have a really good look for more dry joints, they can be hard to spot, did you have a tap round the board with a non metallic object whilst it was running?