My power acoustik has a black screen and says no signal

Question edited for clarity.

The way I read the product specs, it needs an amplifier?

https://poweracoustik.com/product/pd-624b/

https://www.google.com/search?q=Power+Acoustik+PD-624B

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Assuming you have all the connections correct and there is the appropriate signal (12v, ground, etc then tour unit is defective.

This is indicative of a failed/failing lcd screen. If under warranty return to manufacturer. If not probably cheaper to replace.

Unless he connected the black to positive and the red and yellow to negative, it should not have fried his dvd player.

I called Power Acoustik in Ca. and they have them for $45 323-722-3333

HOOK IT TO THE GROUND WIRE (BLACK)

try using an ipod or mp3 and hook it up directly to the amp input section-if its lit up and you get sound then youre not getting signal from your deck and youll have to track that problem down at the deck-if you still dont get any sound by connecting directly into the amp inputs then you may want to check all amp settings and be sure that your set up right and if it has external fuses make sure that they are all good and if it still wont give you any sound than take it in and get it checked out-hopefully its just not getting any signal cuz if its the amp then sorry to hear it-but good luck

return it...it will start jamming when loading a disc and the fan will start to grind soon.  it is a bad unit..like all 3 I have HAD!!!!!

does it do it with TV, Dvds, or everything?

You need to order extra components in order to use the optional GPS function.. you can try checking circuit city or the Authorized Acoustik Suppliers for the products like the websites or you can check Ebay as someone might have the product