When i turn on power fuse keeps blowing - Car Audio & Video

If you keep blowing the brake fuse than you have a short in the system. Unplug the brake switch. Install a new fuse. If it did not blow than the problem is after the brake switch. Next unplug the turn signal switch, then plug the stop light switch back in and press the brake pedal. Did the fuse blow. If not than the wiring is good in between the two switches. With the turn signal switch disconnected use a jumper wire in between the light green wire (power from the brake switch) and the orange with light blue wire (power to the right brake lamp). If the fuse blows than there is a short in the right side brake circuit between the plug in and the rear socket assembly. If the fuse does not blow than jump from the light green wire to the Light green with orange wire (power to the left brake lamp). If the fuse blows than the problem is in the left hand brake wiring circuit.

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If a fuse keeps on blowing there is a short in the wireing to that circut, Your best bet is to take it into a auto electric shop to be check out,

Greg, If the fuse keeps on blowing there is a problem with the internal amp. It was probaly caused buy a electrical power surge, Or a (********) up Sub patch cord,

The 20amp ga/idle fuse powers a hot fuel module which powers the oil pressure switch, the fuel pump relay, and the fuel gauge in the tank.
Any of the four components including the fuel pump can blow the fuse.

The fuse doesn't blow till you turn on the light switch? If it blows before turning on light switch, look for a short to ground between fuse box and light switch.
If it blows after turning on light switch, I believe they make a short finder tool.

It may have been reversed polarity on turn on. This can short out the polarity diode and then cause fuses to blow. This is a protection circuit so do not keep trying new fuses as the reverse surge can go into the radio deeper and damage it beyond repair.

DO NOT keep feeding it fuses more damage can accur-check rectifiers in power supply-then check regulator-chech H.O.transistor.if you need more help im gonna need a model number to go furthor

this is a normal behavior if one of the power supply transistors have blown. take the unit to an enlectronics repair. they can either change the transistors affected (usually more than one) or replace the power supply board.

There is a ground not connected or a wire open that is causing it to blow

Hi there. From memory they had bridge rectifier problems with them going short circuit. Check them first. Sometimes the toroidal transformer can go a shorted turn, in turn blowing primary fuses. try to soft start it whilst it is blowing fuses, Best bet is to make up a special lead that has a 60w light bulb wired in series with the mains power supply(or across the fuse holdwer that is blowing:). Limits the power in the circuit to ... well you guessed it 60 watts.

check em out and let me know.

regards
Graeme