Ghettoblaster MP3 player installation

Step 9 Charge!!! Or maybe just recharge.

Lastly I installed a DC USB charger which I mounted to the inside frame. I wired this to a switch and the external USB outlet. The voltage regulator put out a nice even 5 voltz for my MP3 player but the charger itself creates too much interference to charge while playing music. The charger is powered off of the main power circuit of the boombox itself (which is 9 volts). So it can charge the MP3 player if the boombox is powered by AC or powered by Batteries. I traced the circuits from the AC transformer and the battery compartment and discovered the + and - points were actually labeled with tiny "+" and "-" symbols on this models printed circuit board.

WARNING: Testing the voltage on a boombox that is plugged in to an AC outlet can cause electric shock, serious injury, and even death! If you don't know how to use a multimeter chances are you shouldn't be attempting this type of mod.

The USB data lines from the MP3 player run directly to the new Micro USB port mounted on the end of the boombox. The power lines from the Charger go to the New switch so that power can either come from the Charger or from the New Micro USB port which can be linked to your computer to load music onto your MP3 player.

With the charger installed I do not have to have a computer to recharge your MP3 player.

Oh...the old tape counter...that is just there for cosmetics.