Hi, I have a MBQuart RAA1000 mono amp, It powers on, but stays in protect mode. I have checked all the wiring and everything is fine. I have tried for almost 2 years to find a solution to this problem and cant seem to find a cause for this, or anyone that will fix an amp. If anyone has any idea what could cause this, please let me know. Also I feel I am a very technical person and would be comfortable fixing the amp myself if someone could point me in the right direction to get started. Thanks
In that group of transistors, measure the resistance from the center leg to the outer legs on each of the individual transistors. If you find any that read near 0 ohms, you need to remove them from the board and test them again. If they still read near 0 ohms, they're defective.
The SSP45N20B are difficult to find. The SSS45N20B should be a good substitute.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
You amp went into protect mode from an abnormal condition. Were you hammering on this amp when that started? I might suggest letting up on it a bit if so. Also check your wiring. Make sure all are insulated well and fully connected. It cut the noise off because if it would have continued it would have blown your amp. Make sure the fuse is good as well. Perhaps it is getting weak. Turn things down and turn the amp on. Give it a chance to cool for a bit first and then turn things down and turn it on. Everything a go? Then turn it up a bit then. My guess is it was getting worked a bit to hard and went into protect mode. Give the amp a rest from time to time. Good luck.
disconnect everything except the power, remote, and ground. turn off then on. if it goes into protect mode then there's a posibility that the amp if fried. check all the speaker inputs and outputs to make sure that there are no stray wires shorting out. if it stays on then you may have a short on a speaker wire or an auxilary input wire. plug each one in one at a time until it goes into protect mode, then that's the shorted wire or it could be a shorted speaker.
when you hooked the amp up did you make sure your speakers were all in-phase positive to postive / etc.. a common issue with hi-power equiptment is grounding whatever input power supply gauge wire was used the ground has to be equalized, also if youre drawing too much on the amp (too much speaker/not enough amp ) this problem will continue till the amp cooks, check all phase, and if youre mono-bridging make sure this amp can be mono-bridgeable that would also send an amp into protection mode because its recognized as a short to positive-good luck
Hi the protection light comes on when there is a problem within the amps. circuitry. Generally speaking the protection light normally comes on when powered up while the amp checks all of its voltage rails so that they all lie within a specific tolerance, when all have been verified to be in spec. then the protect light goes out & the power light comes on. If the protect light stays on then a fault exists within it's circuitry. Cheers, acbva.
Two things, a problem with the speakers, or the amp is toast. If there is a short is the speaker, wire touching, bad voice coil, the amp will go into protect. I have also seen many, many MTX amps that go bad, and just stay in protect. the easiest way to check, is to unhook the speaker wire from the amp, then power it up, if it still goes into protect without a speaker hooked to it, you have a bad amp. Hope this helps.
take the amp out the trunk and connect directly to the battery, use a jumper wire for the remote from the constant power 12volt , if the amp fail to turn on it may be damage. check the fuses and look for any burnt connection.use a test light to test for power at the connection.