Question about Solid Audio Formula Series F21 2-Channel Amplifier Car Audio Amplifier

1 Answer

Solid audio f29 2 channel

I purchased this amp and it came damaged. I belive that there was water damage to the pwer board. It is a seperate pleice but I belive I need a new one. I have been unable to find anything about this company. Any help would be great

Posted by insame1 on


1 Answer

Mike Ryan

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 98 Answers

With the no name amps theres not alot you can do. Even with the high end amp companies you cant get much info and parts out of them.. If you happen to be in the chicago area i do run a small repair shop and i would be happy to take a look at it and see if theres any way to repair it....

Posted on Aug 18, 2007


Add Your Answer


Uploading: 0%


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



Related Questions:

1 Answer

CDJ1000mk2 No Audio Output on Left Channel

Check the left channel speaker for damage. If it is Ok, the audio output circuit to left channel should be troubleshooted. Seek any technicians' support.

Jun 12, 2012 | Audio Players & Recorders

1 Answer

I need to know where can I purchase a fuse for Behringer PMP2000 10 Channel Mixer

If the fuse blew, you ARE going to need a lot more than a fuse as the cause is usually internal damage to the amp module and or power supply. Replacing the fuse without repairing the cause USUALLY causes more damage.

Oct 09, 2011 | Behringer Pmp3000 16 Channel Audio Mixer

1 Answer

I have a behringer pmp3000 which has stopped working on channel A. I know what the problem is and have sourced a replacement board. Is it still possible to use it as a mixer if the amp section is...

What is the source of the HCA2400 module? Be very careful if you disconnect the power supply 70 volt cables to discharge the caps before connecting new amp module otherwise you will do some welding with the arc that occurs. You could run the unit with the 70 volt cables pulled at the power supply... leave the other little cables in place. Also be sure to read my tip on Fixya regarding the Channel A hazard with speaker cables. I received an HCA2400 replacement that was wrapped in pink bubble so tight that 5 small electrolytic caps near the audio input cables were broken loose destroying the circuit board. Be sure and check your replacement in this area for damage due to improper shipment. I have repaired some of the HCA2400 that burned up channel A... it is a lot of work to grind out the damaged board and re-insulate and restore circuits with jumpers.

Aug 23, 2011 | Behringer Pmp3000 16 Channel Audio Mixer

1 Answer

If I'am powering 2 Peavey 4 ohm bass binns, then linking, from the base bins, 2 15" 4ohm cabs, should my selector switch be in main L and R mode ,or Bridge mode for maxium output and performance,...

You CANNOT power 4 total 4 ohm speakers from this unit without special configuration. The lowest you can go is 4 ohms per side, which would be one 4 ohm cabinet per side. You would have to do a series parallel arrangement with the resources you have... two Peavey's in series and that combination in parallel with two 15's in series...
This is a VERY unsafe configuration with this mixer. ALSO please read my tip on here in regard to PMP mixer grounding hazard of the A channel when using Speakon to 1/4 inch cables.

Frankly, forget about maximum performance unless you want to risk blowing your mixer...

If I were you, I would put the two 15's in SERIES as 8 ohms on one of the channels and the Peavey's in SERIES as 8 ohms on the other channel.

You would be well to heed this warning as I have repaired a bunch of these units. Be careful of any poor speaker connections as there is an insulation breakdown problem in the power amp circuit board if a speaker becomes intermittent. If something fails DO NOT replace the pwer fuse as you will do more damage.

Nov 18, 2010 | Behringer Pmp3000 16 Channel Audio Mixer

1 Answer

I have Mackie mixer cfx12 all the channels work except for channels 2 & 3, I turn the pre amp trim pot all the way up but no input is present, I also tried solo PFL for these two channels and no...

I suspect one of the upfront IC amps has been damaged. This can happen if people power the mixer from a receptacle that is different from where other connected equipment is powered such as amp. For example, mixer is at one end of the hall and other inouts such as an output of a guitar amp is plugged in. If a ground fault or spike occurs, teh ground bounce can exceed the common mode voltage of the input amps.

In your case, the inpout amps are discrete transistor types.

A voltage surge into the inputs of your unit would LIKELY pop two bypass caps that are 330pf. For channel 2 these are C205 and C206. Check those for shorts.

VERIFY audio is available at the "send" (tip) of the channel insert connector... this verifies the preamp stage. You can PROBABLY plug a set of headphones in to check this... ONLY one side will have sound of course. Verify this is a good test by checking a working channel. The level will be quite low and we are looking for just some signal.

IF you do have signal on the channel insert send which is the "tip" of the channel insert with the trim turned up, let me know and I will check the schematic for the next thing to check farther down the line.

Sep 15, 2010 | Mackie 1604 Vlz3 16 Channel Mixer

1 Answer

Hi ya, due to my stupidity i managed to connect

Obviously you damaged more than just the fuses when you did the deed. Check out your power supply and amplifier output stages for damage(s).

Apr 24, 2017 | AudioBahn A2150HCT Car Audio Amplifier

1 Answer

Apx stopped working, MTX 702x

maybe the audio amplifiers Ic´s damaged or the power fet

Mar 06, 2009 | MTX X Thunder 702X Car Audio Amplifier

1 Answer

Lost Right Rear Channel

These are very complex amps that mainly use surface mount components. This amp has 4 vertical boards for the individual channels. It's difficult to work between boards and it's easy to damage the main board if you don't have good quality equipment to desolder them. If you want to learn to repair audio equipment, this is not a good starter amp. I'd suggest sending it to JL or a reputable local shop. If you're lucky, it could simply be a case of a dirty contact on a switch or a switch that's not set correctly. Try moving all of the controls and switches before sending it off for service.

Sep 17, 2007 | Jl Audio 300/4 Car Audio Amplifier

Not finding what you are looking for?
Car Audio & Video Logo

Related Topics:


Ask a Question

Usually answered in minutes!

Top Solid Audio Car Audio & Video Experts

xxxxxx xxx

Level 3 Expert

5023 Answers

The Knight
The Knight

Level 3 Expert

76582 Answers

Brad Brown

Level 3 Expert

18631 Answers

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

Answer questions

Manuals & User Guides