I have posted this problem on here before and got some good advise. But now I have another issue with this amp and would like opinions on my final dealings with this amp, SWR, and the repair shop. Here is the story again as detailed as I can get. Back in Nov. last year, I brought my Pre-Fender SWR SM-900 (Red Logo) amp into an authorized repair center for a volume fluctuation problem. After the repair center being back-logged a couple weeks, taking SWR over 2 more weeks to send parts then finding out they were the wrong parts, another couple weeks for SWR to re-send the correct parts then finding out that the correct parts don't fit on the Pre-Fender models due to different circuit board configuration. Now it is the beginning of Feb. and the shop calls me and says that they need to talk to a tech at SWR to try to find out what is wrong with my amp. It takes SWR 2 more weeks to respond then they say they don't know either what could be wrong and since SWR does not repair anything at the factory, only authorized repair centers can do the work. In addition, SWR does not make or carry Pre-Fender parts anymore .SWR then gives the repair center the number of a former SWR head tech and it takes him another week or so to get back to the repair center. The former SWR tech says he MIGHT be able to fix the amp but it would cost me anywhere between $300-$550 to repair plus shipping round trip. Therefore, the local repair guy calls me up and says that they can not put anymore time into this amp and I will have to pay them $150 for the time spent in the shop. I thought about my options which took another week so now I am here March 31st and still no amp. Today I went to pick up my SM-900 and asked the person that was working if I could try it out just to make sure that it is the same as it was when I brought it there. He assured me that it was but I decided to drive to a nearby music store and tried it out. Guess what? The amp was crackling, making load popping sounds and producing a fast ticking sound even with all controls tuned down. Tried all the speaker outs and the left ones were popping/ticking and the right ones sounded all distorted with no volume even turned up. None of these things were there when I brought it in. I also noticed that the half the original screws for the top plate were replaced with silver ones instead of the original black ones. So now, I brought the amp back to the repair center and demanded my $150 back, which he did give back but said we will still have to charge you the $150 when you come back again. He also said that I would not have to pay anymore to get the amp back to the original state. What would you do? I am going to call the repair center Monday and demand that the amp be put back to the original problem within a week and I refuse to pay them anything for the mess. If they cannot get it back to that point, what should I do? Lawsuit is not out of the question either. I was planning to sell it "as is" but with the additional problems, I don't know if anyone would buy it even to try to repair. I would appreciate any suggestions, Thanks.