Question about Rockford Fosgate T20001 bd Car Audio Amplifier

1 Answer

Rockford Fosgate Power T20001bd goes into protect upon power up.

As soon as I power up my system, the t20001bd amp goes into protect. I checked voltage on batt pos. and neg.and is good. When I check the remote turn on at the amp it drops to 9volts dc. Also the speaker is fine. Is there a simple fix or should I send it in?

Posted by on

  • Anonymous Mar 20, 2014

    I have disconnect the speaker and RCA jack and it still goes into protect

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 631 Answers

In most of Rockford's amps, the low voltage detection is connected to the remote input. If the remote voltage is too low and they use the same circuit on this amp, it could trigger the protection circuit.

 

Disconnect the head unit's remote from the amp. Use a fuse holder with a 3 amp fuse to jump between the B+ connection and the remote terminal of the amp. If the amp powers up, the head unit's remote output may be defective. If it blows the fuse, the remote input or part of the power supply is damaged. Do not try it with an unfused jumper.

Posted on Oct 21, 2007

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Hey I have a rockford fosgate t2500bdcp-1 when ever the bass is about to hit the amp goes to protect mode and comes back on


If you can tell that it is about to hit and the amp goes into protect mode, the amp is being over driven on the input.

Feb 06, 2017 | Rockford Fosgate Car Audio & Video

2 Answers

Audio cutting in and out protect light turning on Rockford fosgate p4004


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. Try adding a capa A thumbs up would be greatly appreciated if this answer is helpful to you. audio-cutting-in-out-protect-light-peeu4x5nsxvd53n2rwetiqa4-3-0.jpg

Jun 20, 2010 | Rockford Fosgate Punch P4004 Car Audio...

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 Fosgate punch protection light


power it off, then on...check you're fuses. unplug the car battery and try again. good luck.

Sep 05, 2009 | Rockford Fosgate Punch 800a2 Car Audio...

3 Answers

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


try hooking the remote wire to a rem wire on the back of stereo. post and let me know results

May 30, 2009 | Rockford Fosgate Punch 401S Car Audio...

1 Answer

401s Rockford Fosgate Amp. Not turning on. No power light. Pos+ and GR- are solid. Thought it may be remote, so tried running a wire from the POS+ to REM to test it, no luck


Amp Failure:
There are many different ways that an amp can fail but the two most common failures are shorted output transistors and blown power supply transistors (< those are not blown). There are several types of protection circuits in amplifiers. The most common are over-current and thermal. The over-current protection is supposed to protect the output transistors. Sometimes it doesn't work well enough to prevent the failure of the output transistors but it will work well enough to shut the supply down before the power supply FETs are destroyed. If the amp remains in protect mode, goes into protect mode or blows the fuse as soon as the remote voltage is applied, shorted output transistors are almost certainly the cause. If the fuse protecting the amp is too large, if the protection circuit doesn't respond quickly enough or if the power supply is poorly designed, the power supply transistors may fail. If you see a lot of black soot on the power supply transistors (near the power transformer), the power supply transistors have failed. Soot on the board doesn't necessarily mean the transistors have failed. Sometimes, technicians don't clean up the mess from a previous failure. Transistor Failure/Checking Transistors:
In general, when a transistor fails, it will either short (common for output AND power supply transistors) or open (common for power supply transistors). Transistors act like valves. They control the current flowing through a circuit. A shorted transistor acts like a valve that's stuck open (passing too much current). In the case of an output transistor, the shorted transistors tries to deliver the full rail voltage to the speaker output terminal. If you've ever seen a damaged amp that pushed or pulled the speaker cone to its limits when the amp powered up (common on some Rockford amplifiers), that was almost certainly due to a shorted output transistor. When checking transistors, you most commonly look for shorted connections inside the transistor. You do this by using a multimeter to look for low resistance connections between the transistor's terminals. Note:
I used the terms short and open on the previous paragraph. A short (short circuit) is a path through which current flows that should not be there. An open (open circuit) is a break in the circuit.

These repairs are best left to a repair tech familiar with car audio amplifiers. Check with your local shop to get a reccomendation. If the light isnt even coming on, chances are your input or power supply has been taken out.

Jan 01, 2009 | Rockford Fosgate Punch 401S Car Audio...

1 Answer

NEED HELP


wire them parallel and pray to god that amp dosnt explode. jkjk

it really depends on what the ohm ratings are for the voice coils you could wire two subs serial and the other two serial and then run both sets parallel.

May 18, 2008 | Kicker Solo-Baric L7 S12L7 Car Subwoofer

1 Answer

Rockford Fosgate Punch 360.2


If the wires were touching then the amp overworked itself into a early grave..What happends when they touch is the amp goes from seeing a 4 ohm load to seeing a 0 ohm load. You can imagine why this would be bad for a amp...usually the amp should shut off to protect from damage and I would assume that Rockford would. Right now im having a similar problem..I suggest your call rockford and ask to talk to a technical advisor ( the name escapes me) and ask him what he thinks.

Mar 17, 2007 | Rockford Fosgate Power 360.2 Car Audio...

Not finding what you are looking for?
Rockford Fosgate T20001 bd Car Audio Amplifier Logo

Related Topics:

435 people viewed this question

Ask a Question

Usually answered in minutes!

Top Rockford Fosgate Car Audio & Video Experts

seankane89

Level 1 Expert

53 Answers

hoyzee1

Level 2 Expert

150 Answers

Tygh Duval
Tygh Duval

Level 2 Expert

300 Answers

Are you a Rockford Fosgate Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...