Posted August 31, 201312 yr The other day, my subwoofer suddenly cut out and I traced the issue to my subwoofer pre-outs on my Kenwood DDX-319 head unit. Troubleshooting done so far: No AC voltage comes out of the subwoofer pre-outs on the head unit at all Connecting the sub amp's RCAs to the rear pre-out produces sound from the sub (ruling out that it is my amp or subwoofer) There is no resistance (0 ohms) between my pre-out grounds and the case of the head unit (leading me to believe it is not simply a blown fuse in the head unit) Everything else on the head unit functions as intended My head unit is out of warranty by a couple months. I emailed Kenwood about the problem, but they will most likely give me the run-around and ask a million questions before giving me a repair quote that I expect to be at least $100, something I can't really afford right now with a new semester starting. I have some proficiency in electronics (enough to most likely be able to replace a broken component, if I can tell that it's broken), so I'll probably end up opening the head unit and seeing what I can do. I have never used the amp in the head unit, so it's unlikely that it's a heat-induced malfunction, in my eyes. Any help I can get is appreciated, especially things that would help me repair the head unit, like what components could possibly be broken. Thanks!
August 31, 201312 yr Author Yes, the subwoofer stopped working while I was driving, listening to music, not touching the head unit. I've flipped the sub option on/off a dozen times and even reset the head unit to factory.
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