Question about Rockford Fosgate Punch 401S Car Audio Amplifier

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Hello. I have a punch 551 4 channel amp. The

Hello. I have a punch 551 4 channel amp. The power is blown and found 3 transistors blown. Can this amps be repairable at a reasonable cost? I was told that all 6 transistors have to be replaced because it is all one bank. Thanks, Al

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The cost of the replacement parts is minimal if there is no damage to the audio circuit. If there are shorted output transistors, the cost of replacement parts won't be significantly higher but it may be more difficult to repair. If you're going to try to repair it yourself, read through the following page:
http://www.bcae1.com/repairbasicsforbcae1/repairbasics.htm

Posted on Jul 18, 2009

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