audio amps troubleshooting???


Old 11-05-06, 07:45 AM
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audio amps troubleshooting???

I have a Blaupunkt amp coupled to Blaupunkt head unit and Blaupunkt CD changer. On a recent trip, rear speakers began popping in and out at same time the power light on the amp is cycling on and off...checked power, fuses and ground.
Also at the same time by head unit picked up an CD error message . Not sure if that is related or just something else, changer still works although only through the front speakers, same for tuner. I would think the amp is blown and causing all the rest? How do you check?
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Old 11-05-06, 08:11 AM
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amp repair

Sorry don't have much exp in that dept. but I do know that Blaupunkt has a great customer service and warrenties. Try there web sit for common problems. Good Luck
Old 11-05-06, 08:42 AM
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Sounds like either bad wiring at the HU or a bad HU. The HU is what gives the amp the signals. Try just disconnecting the amp and just have the factory wiring going from your HU to your speakers. If it works alright then, you got a amp problem or the processor for the amp within the HU is probably shot. Also, make sure your blue power antenna cables are hooke dup right. All the blue wires should be spliced together.
Old 11-07-06, 09:59 PM
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It also sounds like your front speakers are powered directly from the head unit, and the rears are pumped thru the amp - that's why your changer/tuner still work thru the fronts. But your amp might be in the hurt locker....

After following HotinOKC's checks - if the problem is still there, disconnect the inputs from the amp, so it's isolated (no input), and if you've confirmed you have good, steady power but the amp's still cycling on/off, it may be toast - ready for replacement or repair if you know where to get it fixed.

When this started, were you trying to save gas by using sound waves to move the car (polite way of asking if you were pushing the amp to or past it's limits)...? And was there any distortion or fuzzy sound before the speakers just started popping?

When an amp turns on, there is usually a short delay before power is applied fully to the outputs. If there is an internal short, it could be shutting itself down, trying to turn on, shutting down, etc...
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