Question about Alpine CDA-9813 CD Player

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Hi, I had just my Alpine CDA-9813 at the electronics repair shop that I usually go to because whenever I would turn the unit up past 22 the sound would drop out and then back in so fast that was almost as if the CD was skipping. But it did it when the tuner was on as well so I ruled out a skipping CD. I've also ruled out any vibrations, but vibrations also wouldn't cause the tuner to skip. So I'm left with two more options that I can think of. With the first possibility being that the unit is starving for power, and the second possible cause being that whatever controls the cooling fan isn't sending any power to the fan. I bench tested the fan an it works beautifully. But I'm a little reluctant with me and my shaky hands testing inside of a powered up and opened up unit. I honestly think that it's just not getting enough power supplied to it and that's exposed during the heavier amp drawls when the bass hits. If it was a fan problem, the unit wouldn't be overheated and kicking out first thing in the morning when I get it after in sat for at least 8 hours not being hot. The place that I used so many times in the past I will use no more. The store has been passed down from the original owner to his young son who doesn't seem to have clue about electronics. His ideas have been from it needs a new laser, all the way to I must hit too many bumps on the road, which did I thought was funny anyway. Whaddya Say? Should I connect the constant power supply directly to the positive output terminal on the alternator, just run it to the battery terminal, or install a capacitor and run it to the battery? oh I forgot, should I have the alternator redone? I know a place that's been doing that for years and will get me 120 amps out of my alternator instead of the stock amps it's putting out now, which I think is maybe 80 amps. I should mention that this is just the beginning, I'm going to add my old and trusty Kenwood 1021, an Alpine 4 channel, 2 sets of Polk 6 1/2" components, and 2 12" subs (I'm not sure what brand subs I'll be using). But the Kenwood 1021 pulls a whole lot of amps. Help me, Help me!!

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