[quote name='Bilbo' post='934464' date='Aug 24 2010, 09:27 AM']I would ask them to lend you an amp if you need one in the meantime. Most shops would do that. If not, let it ride for a while longer. The trouble is that most shops have a guy they use who they rely on but, as they have indicated, things happen and delays can occur (it is credible for a repair guy to have gone on holiday in August, after all ). I had an American amp in for repair once (many years ago) and the delay was caused by the repair guy having trouble accessing a circuit diagram from the manufacturer (this was pre-email). It got done in the end and the amp caused me no more trouble.
Three weeks is no time, really. Try ordering a sofa![/quote]
Good advice bilbo. I had the same experience and went down a courteous and understanding route. I ended up getting a new amp as the shop couldn't find the fault! If it goes on for too long however it is time to start becoming more assertive. All the best!