Question about MTX Thunder 81000D Car Audio Amplifier

2 Answers

Blown part in amp

When i was hooking up the power cable to the amp, the wire touched the ground terminal and sparks were flying. There is still power to the, but no power to the subs. I think i found the problem. The two copper coils that are close together, one is loss and when i touched it ot the board there was smoke and the subs were trying to work, i think that is the problem. I want to know if it is repairable.

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2 Answers

You shorted something touching ground with your power wire. You might have fried other components as well when you used the jumper wire.

Posted on Sep 07, 2007

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Your protection is dead chenge releais and go

Posted on Jul 22, 2007

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1 Answer

My 77 Chevy c30 has no power. Jumped started it and drove it home. I turned it off then tried to restart it. No power no lights. nothing. Battery is good. An u help will be appreciated.


If the battery is good you will need to follow flow. Test light is the easiest to use. First hook light to ground and touch pos terminal,lights good next touch pos battery cable end, lights good. Next follow pos cable to starter pos terminal,lights good. Next hook test light to bat pos teminal,touch neg terminal,lights good. Then touch engine block, lights good ground. Next move test light clamp back to ground/neg side and touch alt pos terminal,lights good.if all that tests good, if all good move inside and check for power at ign switch pos term if at any time you dont find power you have wiring issue that needs to be addressed. Let me know what you find. Russ

Mar 29, 2015 | Chevrolet Cars & Trucks

1 Answer

My amp still gets power but it wont turn on. i hook it up and it gives me a small spark but then the wires begin to get hot. it was working fine the other day and now idk whats up


the remote cable may be grounded. Check the power wires and you should have a fuse near the battery so make sure its not blown. Also check for blown fuses on the amp.

May 21, 2011 | BOSS AUDIO SYSTEMS CH700 Car Amp

1 Answer

Soon as i try to connect the power and ground starts sparking and my fuse blows by the battery. I changed the ground cause i thought that could be it plus i tryed installing it in another car that had an...


your inline fuse wouldn't blow if there was just something wrong with the amp. the amp fuse would blow if that was the case. something is faulty with your wiring. you probably have the wires touching somewhere or are in the wrong terminals at the amp or on the wrong battery terminal. or your power wire is grounding out somewhere. its not the amp. its your wiring

Mar 16, 2010 | Car Audio & Video

3 Answers

Pyle PLA885 amplifier blows 25amp fuse. Ideas?


signs of a short, did any wires touch while you where hooking or un hooking the amp? if not then the internal power supply probably has a short in it and needs to be repaired. you can swap the fuse for a good one and hook it back up and make sure you don't touch any wires and if it blows it again then your issues is internal and will need repair if it doesn't and everything seems fine then wires could have touched or the amp was ran past it's limit and blew the fuse to protect it self. good luck and ask any more question you have

Sep 24, 2009 | Pyle PLA885 Car Audio Amplifier

1 Answer

Amp not turning on



With your multimeter set to DC volts, the black meter lead 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 lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.

If neither is too low, the power supply in the amp is probably blown.


Nov 10, 2008 | Rockford Fosgate Punch 301M Car Audio...

1 Answer

No power to the amp i touched the power wire to the side of the amp


It probably burned a trace on the circuit board.

With the amp hooked up normally and the head unit on (so the amp will have remote voltage), do you read 12v DC anywhere on the case of the amp (black meter probe on the ground terminal of the amp)?

If there is no voltage on the case, confirm that you have 12v on the B+ and remote terminals of the amp (black probe on ground terminal of the amp).

Aug 25, 2008 | Kenwood KAC-9102D Car Audio Amplifier

2 Answers

Amplifier won't turn on


You need to confirm that you have voltage on the B+ and ground terminals and have a good ground.

With your multimeter set to DC volts, the black meter lead 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 lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.

If all of that checks out, the amp probably has an internal fault (blown parts, broken connections...).

Let me know if you have any other questions.

Aug 24, 2008 | Pioneer GM-X324 Car Audio Amplifier

1 Answer

Battery hook-up


You must have inline fuses at the point where the wire taps off of the power source. If you're tapping off a wire that has no fuse (like the starter solenoid), you must insert a fuse.

When making the connection to the amp, there will be a spark initially. If you hold it on for a second, pull it off and then touch it again, there should be little to no spark because the capacitors in the amplifier would have charged when you made the initial contact. If there is an intense spark each time you touch it and the amp is not on (no remote voltage applied), the amp may be defective.

Let me know if you have any other questions.

Aug 18, 2008 | Kenwood KAC-7202 Car Audio Amplifier

1 Answer

Amp in Protection Mode


With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage drops below ~11 volts, you need to check the wiring feeding whichever line is too low.


If the voltage remains near or above 12v, disconnect all speaker wires and signal cables from the amp. If it powers up, the wiring needs to be checked. If it still shuts down, the amp likely has blown output transistors.

Dec 19, 2007 | Nitro BMW-482 Car Audio Amplifier

8 Answers

SUBWOOFER NOT WORKING?


if you have real old wires from the amp to the sub try getting new wires on it. check the little wires that go to the cone itself on the sub. sometimes they can manage to get pulled out of their terminals and make sure that thier touching the terminals on the correct spot

Sep 29, 2006 | JBL GT150 Car Subwoofer

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