My old trusty Kenwood just went mute as I was driving. The power light comes on, but there's a *pop* coming from the speakers in a steady half-a second interval without any other signal. Also at the exact time I hear the *pop* the power light flickers once. I have no idea what this problem can be, since my grounding is fine (it worked before) and AFAIK I haven't overheated it.
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Re: Kenwood KAC-848 amp not working
It sounds like the amplifier is going into protection mode. This is generally due to shorted output transistors but can also be caused by shorted wiring. Disconnect all of the speaker wires and signal cables from the amp. If it still does the same thing, confirm that you have adequate voltage across the B+ and ground terminals (at least 11 volts DC). If the votlage acrosss the terminals is OK and the light still flashes with no speakers connected to it, the amplifier is in need of repair.
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There is an Internal Fuse on Most of these Models that will blow from time to time. You might also check the Ground Connection. A loose Ground can cause the Same Problem. Please Rate My Response! Thanks!