Hi there, I have a PSW300 sub which stops and starts working? Power light works, and fuse inside seems to be ok, board looks really good overall? I here a little click when I turn on the power switch, so power seems to be ok, but still no sound? I turn it off, leave it for a while, a day, maybe a week, and then it will work again for the duration of a movie, but then next time I use it, it'sagain? If I open up box,and take board out, have a look at it,etcc and put it back in,it usually works nearly everytime? There is also a very tight seal around box, not air can get in or out??? A mate of mine reckons, it could be a dry solder joint moving with the heat build up, as it does seem to get quite hot in the circuit board plastic box area. Do they heat too much could this be a problem? Weird how it works then doesn't, then does again. Please help I'm in New Zealand so i dont even know If i can gets parts here or where to take it if it does need fixing otherwise this Sub rocks!!!! I love it so... Please help ..