Amp problems

[rmrunner]

Recently i tried to connect an old pioneer car amp GM4000. However, the +ve and negative wires touched and a cap was blown in the power supply. It leaked all over. I changed the cap with the same as before and cleaned up the board. Everyting else seemed to be in tack and working. However, when i connected it to my system, as i turn up the slightest volume the amp start to click and go into protect mode. Also when its connected to my car im not able to start the car...the car starts fine with out the amp.

What can be the problem and how can it be fixed?

Thanks

[odysseybmx414]

Did you reverse the polarity of the voltage supplying your amp? If so, I'm afraid you will have more problems than those blown caps.

Also, the fact that you cannot start your car with the amp connected makes me wonder if you are using a fuse at the battery. This fuse is for safety and should blow if there is too much a load, such as a high enough load to prevent your battery from starting your car.

I don't know too much about vehicles, but that's my 3 cents.

[rmrunner]

hmmm......i dint hav a fuse hooked up, but the fuse behind the amp did not blow....so if the polarity was reversed or the load is too much...how can i go about repairing the amp?

Thanks

[blakktalon]

if you want to sell it and its not to expensive to ship, i will buy it. i am in the process of learning repairs, and i have one of those already. It would be nice to have an extra for parts.

[Perry Babin]

Have you determined why the vehicle wouldn't start with the amp connected?

Did you try it with a different speaker? A shorted speaker or shorted wiring could cause the amp to go into protection at low volume?

You need to confirm that you have sufficient power supply voltage. With your multimeter set to DC volts, the black meter probe on the ground terminal of the amp (not on the point where the ground wire connected to the vehicle) and the head unit on (so the amp will have remote voltage applied), touch the red probe alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts on either the B+ or remote line, you need to check the wiring feeding whichever line is too low. If 'both' the B+ and remote turn-on lines are low and your battery is fully charged, you may have a bad ground connection.

[rmrunner]

i reconnected all wires today, i am getting over 11V on the remote line, but wen i connect the B+ wire to the battery the voltage across the amp reads 6.9V

Note the battery is fully charged

Car still not starting with it....

can u shine sum light on this?

Thanks

[Perry Babin]

What's the voltage measured directly across the battery terminals when the car won't start?

[rmrunner]

9V.........i tried sumting new.....i run d B+ direct to the +ve battery pole and the GND to -ve battery pole an the car starts and amp works fine........but if i switch off the car its draining the battery quickly......do i need a bigger battery?

[Perry Babin]

If the amp is drawing the battery down to 9v, either the amp is drawing excessive current or the battery needs to be replaced. What size fuse do you have in the amplifier's main power wire (at the battery)?

[rmrunner]

30a