Question about Rockford Fosgate 100a2 Car Audio Amplifier

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My Rockford fosqate amp blowed fuse I put a new one in and now it won't come on power light thermal light protect light don't come on either what's wrong with it ?

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  • Contributor
  • 69 Answers

Repair it, or get a new one.

Posted on Aug 26, 2016

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  • 2 Answers

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Posted on Jan 02, 2017

  • 149 Answers

SOURCE: Rockford P3001 amp not working

peel the cover completely off the amp and give it some power- if the amp is blown there will be a tiny light lit up on the circiut board that quite simply says "SHORT"-If its blown then theres nothing you can do unless you are a badass of course- but if the amp is dear to you and you want to spend a little money on it to get it up and running again- go to rockfords website and get into the forums and ask the question-where do i get my fosgate fixed and it will pull up some mumbo jumbo but it tells you about a place called LANDIS TECHNICAL that bought up all the parts to their amps and is in the business of restoring the amplifiers to their factory specs and even sends you a new power certificate to go with your new and improved amp.hope that helps you-

Posted on May 27, 2009

  • 10 Answers

SOURCE: MY ROCKFORD FOSGATE 1001BD AMP POWERS UP, HOWEVER,

check RCA cables.

Posted on Jul 13, 2009

laseramp
  • 309 Answers

SOURCE: 401s Rockford Fosgate Amp. Not powering on,just protect lite is on.

the problem is mostly with your audio side of the amp. i have a 800 Rockford punch series amp hooked in series running at about 15 vdc at 2 ohms stable for now. but the amps left front power side transistors overloaded and smoked out, i will be replaceing my mosfets soon. Now on that side your issues apear to be related to the signal side of the amp. when you hooked the amp up tell me breifly did you hook the rca inputs to the back of the sterio and did you select the proper rca inputs for the amp? also note that amps have a potentiomater that can be tuned up or down to allow the volume or wattage to go up or down threw the system. if it's turned all the way down you'll here nothing. but often you'll get a pop sound or quickly see the speaker move a bit. this indicated the signal side of the amp has signal comming in but no output, just look for a turnable small screw inside the amp top or side. and turn up acordingly. note: to much output will damadge your system. not just the amp. ;)

Posted on Aug 28, 2009

etirbynnor
  • 655 Answers

SOURCE: Rockford P5002 amp problem with thermal light and low voltage

Hello rbenwalker,

The voltage drop may not be in the actual power wire itself. The same reading on both the B+ and remote terminal probably points to a bad or high resistance ground. Try a different ground point or make sure there isn't any corrosion, paint or anything else preventing metal to metal contact.

Hope this helps.

Posted on Sep 13, 2009

Testimonial: "Thank you! Ended up changing the ground and works like a charm, now. Didn't even think that might be the problem."

  • 3 Answers

SOURCE: rockford fosgate 450.4. 1st protect mode, now blows fuses...

smell it !

Posted on Oct 13, 2009

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2 Answers

I was using bridge on a Rockford P300 and blew my cheap speakers but now my bridge doesnt work. Bought new speakers and want to run in bridge mode is there a fuse inside maybe or did I blow it up?


Disconnect all speaker connections and rca cables. Leave power, ground and remote wires intact. Try turning on again. If you still have a protection light your amp is faulty. Hopefully you have warranty. Your amp is clipping.
No internal fuses. Your mosfets are toast. A thumbs up would be greatly appreciated if this answer is helpful to you. using-bridge-rockford-p300-blew-peeu4x5nsxvd53n2rwetiqa4-3-0.jpg

Apr 07, 2011 | Rockford Fosgate P3001 Car Audio Amplifier

1 Answer

Water spilled on rockford t3002 now protect light is on is amp repairable


All depends, when amp is connected does it blow the fuses, if not, it maybe repairable, But its a long process. when your amp is on and has water spilt onto it, the water inside the amp evaporates and gets into every nuck and cranny due to the amp heating up when powered on. you need to strip amp down to bare basics and completely dry the circuit board and all compnents one by one, hense a long process. Best thing to use is a hair dryer. get the hair dryer into every nuck and cranny, into the connectors, basically everything. once done. put back together and try it then. i had a home amp with water damage and fixed it this way.

Mar 03, 2011 | Rockford Fosgate Power T3002 Car Audio...

1 Answer

I have a rockford fosgate 550 that the fuse blows


Short inside one of the transistors. This requires very good soldring skills and electrical know-how, and some thermal paste to go between the heat-sink and the transistor. Unfortunatly this is not a cheap repair, probably cost around 100 dollars.

Cheers,

Kevin

Feb 09, 2010 | Rockford Fosgate Punch P550.2 2-Channel...

1 Answer

Rockford Fosgate T15004 The Amp still powers up with the


Check you inputs to verify you have a signal coming in, if signal then check outputs try a speaker that you know is working and plug it in if that speaker plays then the subs/ or speaker wiring is bad, if it doens't play then you probably have a blown output transistor on the amp or possibly a terminal ground/positive has come loose on the inside..

Oct 27, 2009 | Rockford Fosgate T15004 Car Audio...

1 Answer

Rockford P5002 not getting enough power


7 volts will not be sufficient for the amp either for power or remote. Also check to make sure you speakers wires are not crossed. If its goin it to protect mode immediately the amp is detecting a fault and is not turning on.

Sep 12, 2009 | MA Audio HK4000D Car Audio Amplifier

1 Answer

Same exact problem


Hello phatjay_31,

It's likely that the sub has been damaged by too much power. The Type R's in both 10" and 12" versions can only handle up to 500 watts RMS. The 15" version can handle up to 750 watts. The Rockford-Fosgate T3000bd1 amp puts out 3000 watts RMS into a 1 ohm load.

I'd check the voice coils. They are probably melted.

Hope this helps.

Jul 19, 2009 | Alpine SWR-1222D 12" Type-R Series...

1 Answer

Amp blowing fuses


The amplifier probably has shorted output transistors.

Disconnect the speakers and RCA cables. Replace the fuses with two 10 amp fuses or a single 20 amp fuse. If the amp blows the fuse when it powers up, the outputs are almost certainly the problem. Don't try it with the two 30 amp fuses. The smaller fuses will provide more protection for the power supply. If the amp powers up with the smaller fuses and they don't blow, check the speakers and the wiring (for shorts to ground or shorts between wires).

Nov 22, 2007 | Rockford Fosgate p-450.4 Car Audio...

2 Answers

Protection Light irritation


If the amplifier goes into protect when there are no speaker wires connected to the amp, the amp is likely defective. The most likely culprit is shorted output transistors. If it's new, return it to the place of purchase for repair/replacement.

Sep 28, 2006 | Lanzar VIBE266 Car Audio Amplifier

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