No right channel output after fuse blow out

Not to disappoint you too much, but the 1000 watts advertised is just marketing hype. If your amp is the PB781X, it should have only a single 15A fuse on it. Your battery provides 12.5 volts when the engine is off, so at most, your amp draws 187.5 watts of power. Draws, not outputs. No amp is 100% efficient due to heat. When your engine is running, assuming your alternator outputs 14.4 volts, your amp's maximum power draw is about 216 watts. Again, this is what your amp draws, not what it puts out. What you should focus on is the RMS (continuous) output, not Max or PMPO. Those numbers are useless, unfortunately.
Your amp is rated to output 50 watts per channel at 4 Ohms, and 75 watts per channel at 2 ohms. This is when wiring your channels separately, not bridged. I did not see true power specs for your amp while bridged, but it's possible you'll just get the full 150 watts to the single bridged output. Do not attempt to apply a 1 ohm load to your amplifier, as you will run the risk of damaging it. It's not designed to handle a 1 ohm load. If you're lucky, you'll blow a fuse before the amp is damaged, but either way, there is nothing to be gained by attempting it.

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If I can read you right you are saying that the device keeps blowing the fuse?

Fuses blow when there is an overload. As it is an amplifier we are dealing with the cause is more than likely a shorted output transistor or more than one, or whatever does the main amplification for the device. These devices are located on the main power amp board attached to a heat sink. If the amp has fuses for each channel then you only need to replace the devices on that channel, with the fuses blowing on it. The cause of shorted devices is often bad speaker wires or them touching.

Either there is a malfunction on the amplifier , or more likely there is a short on the speakers cabling. If the cables are shorted, or broken, not allowing a sufficient load, the amplifier will protect itself by tripping a fuse. After a while, or on restart, the fuse will rearm itself, only to be tripped again by the malfunction.

Checked your amplifier connection, it supposed to be like this, amplifier has 2 audio connectors RED is Right White is Left channel, connectors cable should be connect to audio output of the receiver/DVD/CD etc.. and the other end of the cable connect to the input of the amplifier. hope this help thanks

Fuses blow when there is an overload caused by a short circuit. If the speaker you connect up to the amp causes a short. There is either a shorted part in the speaker or the wires to it are touching at some point. Assuming you can sort out the speaker issue and connecting a good speaker with good wiring and it still causes a short and blows a fuse. Then it's likely the output device(s) in the right channel have developed a short themselves. Perhaps as a result of being connected to faulty wiring or speakers.

Your amp is blowing fuses to protect your circuit. The type of 12V battery does not matter. For whatever reason you are over driving the amp. 2 Ohms sounds like a very low impedance for a car amplifier output. I am assuming you have the two 12" speakers wired in parallel. Most are rated at 4 Ohms which means you are pulling twice the current with the 2 Ohm load. Also, the bigger the speaker, the bigger the magnet, the bigger the coil, the larger the inductance, the heavier the load. Make sure these speakers are matched with your amp. A small amp driving large speakers will shut down at high volumes. Try putting them in different channels. Good Luck.

There is a problem with the output section. The most common cause is shorted output transistors. This unit should go in for service. Without seeing the unit and testing it, I can't indicate all of the defective parts. You should expect a parts cost between $25-$45.

Dan

Some of the outputs transistors is bad hence causing a bridge in circuit,thats why the fuse is blowing.Check all the outputs transistors on both channels,rectifiers and zena diodes these are the possible causes of circuit bridge when they are faulty.The fan works on AC thats why it is not affected even when the fuse is blown.Please if you have anymore challenge please send me a mail on [email protected]

are you using a right load for the amplifier. what the rated output power of your amplifier. and know the output of your speakers.

well sometimes it protects you from being deaf.. for maybe its too loud so it goes to protection mode. dont know if -23 could make a person deaf.

well I hope I helped you with my solutions.. ^.^ please dont hesitate to respond us..

1200x with over heating output...does not care if it has a load unless it is too low,(Scott is wrong)..you have a leaky output, or a triac firing and clamping down the voltage to the speakers..the foldback shutdown may also be leaky, but these usually cause it blow fuses, and these get damaged by bad outputs or running the amp into shorts..since this amp has some really high voltages in it I suggest you take it to a shop before you KILL YOURSELF!