The sound in my IS250C suddenly stopped working. Driving along I heard a pop sound (seemed to come from the rear) and the audio stopped. Sometime later the sound came back, but I can't now remember if this was while driving or immediately after a restart. However, it didn't last long and next trip no sound again, which has been the case for the last few weeks. It affects anything that would play through the speakers audio, sat nav & telephone. I have checked the rad1 and rad2 fuses and they both seem ok. Are there any other fuses? or even advice on where the amp is located so I can check if a wire has come loose.

Seems most likely the amp has blown which could be expensive. Sadly my warranty specifically excludes audio sat nav etc.

Any help advice appreciated