So I have a personal HiFi system on my chamber with some fancy discolighting and it recently underwent reparation for what seemed to be a burnt or broken transistor (my father went to the shop so I couldn't really guess what the main problem was). Now I have a relatively small chamber, and it has 2 big disco lamps that send off a lot of heat while being enabled. Also my system consists of the amplifier, CD player and recorder. I was playing music on a medium volume that has nothing dangerous or something to the amplifier and it went on for about 3 houres. Then after dinner I proceeded to play a concert of Pink Floyd and naturally I put up the volume a bit higher. It was now on standard-high which was never ever a problem. On the finale of the concert there is a giant final cadenza (P.U.L.S.E. - Run Like Hell from Pink Floyd for those interested) and I turned up the volume just slightly higher. I was kind of testing to where my amplifier could go. I turned it up to what I always considered the maximum volume which was 4 bars out of the 6 that are available. I would consider it being about 75-80dB. Then, in the middle of the climax it just shut down, boom nothing anymore. I wondered now, was it really because I put it too loud? It was not really HOT or something, but it was pretty warm. I could keep my hands on the amplifier without getting burned or something, so I have a hard time believing it would be that. So yea, I wondered, would it be because of the lights and the amplifier together? Or just bad cooling of the amplifier? I tried setting it on on a lower volume, but it won't produce sound anymore. It's an Akai amplifier that supports 4 speakers. I have 2 main big speakers (on the A channel) and 2 smaller speakers (on the B channel). I use all 4 together. Could that perhaps be the issue? Or simply not enough power for the amp. I'm kind of lost, but I haven't enough knowledge to correctly judge the possibilities of what might cause my amp to go down like that. Anyone got a good knowledge about stuff like this?