20 Most Recent Boss BV9990 Car Video Player - Page 6 Questions & Answers

Most common problem is cable connection. Wiggle each lead, positive, negative in turn at amp. while playing. I assume you have checked that you haven't inadvertently muted the system.

The player loading mechanism has failed, this is common, due to the low cost of these players they are not repaired just replaced except under warranty.

I've heard something about an extra screw being present and preventing it from playing and to take the screwnout.

what do u need?

Hey, ignore the spam, here's the man page you need :0DOK, I'll stop being lazy.Black - groundRed - IgnitionYellow - memory backup Blue - auto antennaIt does sound like the mech may have jammed, has it been dropped?https://www.manualslib.com/manual/922978/Boss-Audio-Systems-Bv9973.html?page=7#manual

to use the high level leads, you have to isolate the wires going to each speaker (if using 4 channel mode) or isolate the wires going just to the rear if you are using 2 channel mode. you have to strip a small piece of the insulation off each speaker wire, and run it into the amps high level input harness. if you dont have the high level input harness, you can get a 2 channel high level to rca adapter for around $20. basically, you are tapping into the signal to the stock speakers to feed music to the amp. make sure you get all your positives and negatives correct. brighter wires are usually positive; however you may be faced with sa speaker which uses a grey wire, and another grey wire- the second with a black line. you will have to, again, turn to internet research to determine which is positive and negative, if the colors are not obvious.