mtx amp problem

hey I have a mtx thunder 2300x amp. I wanted to know if any one could tell me where I can send it to get the crossover fixed. I was told by mtx that they cant fix it and that my problem was definetly the crossover. They said it was a common problem. If you have any other ideas on what else it could be let me know. If I were to upgrade to a new amp what would be similar to the 2300x? Id rather fix this one cause it was a good amp and I never had any other problems with it.

What exactly is the amp doing?   Is it making noises when you adjust the crossover knobs?  Can you move the RCA jacks and make it act up?

Disconnect the RCA cable from the amplifier.  Using an ohm meter, check the resistance between the shield of an input RCA jack and the shield of an output RCA jack.  Chances are they will not read near 0 ohms.  If they do not appear to be electrically connected, the shield path of the input RCA jack is broken where it solders to the circuit board.  You can repair this without removing the circuit board.  Actually you have to remove 5 screws to perform this repair.  Let me know if you are going to try and repair it, I can post instructions to help you.

I dont have an ohm meter so I decided just to look inside at the rca input. When I took the cover off I took the black piece off that covered the the gold shield on the input jacks. Then the gold shield came off. I noticed that it was supposed to be soldered to the circuit board. There is still the piece that was attached to the shield in the circuit board, but it is such a small space to get to to solder it. so if that was what you thought was wrong it would be awesome to know whats the best way to fix it. thanks.

Get a piece of some very small wire, 22 Ga or so. Cut the wire to about 4 or 5 inches long, strip a small amount of the insulation off of each end of the wire. Tin (put an ample amount of solder on each end) both ends of the wire. Push the RCA jack toward the middle of the amp so you can get a soldering iron tip to each end of the broken leg. Heat up and put a little solder on each of those surfaces. Place one end of the wire on the board at the point of the solder connection, heat it up with the iron, remove the iron and let it cool. Now place the other end of the wire on the bottom piece of the RCA jack, heat up, remove the iron while holding the wire in place till it cools. Gently tug on each end of the wire to make sure you have a good connection, route the extra wire out of the way, reinstall cover and do not forget the screw in the RCA jack. It was probably loose, that is why it broke.

So I did what u said and that got it connected again. Its been awhile since I last had it hooked up in my truck probably at least 6 months. After I fixed the rca I hooked the amp up in my truck and when i turned the radio on the amp powered up. the fan came on right away too which it never used to do that b4. So i turned the gains up and the freq up but no matter what I did there was no bass at all. So im not sure if the amp is completely gone or what. any other ideas let me kno if not any recomendations on what kind of new amp I should get? Thanks for the help.

Did you remove the amp from the heat sink?  If you did not remove it from the sink I can see no way that you could have done any damage to the amp. 

Not trying to sound stupid but where is the heat sink at? if u know any where i can just send the amp to to have them fix it let me know. cuz at this point im thinking more and more that i just proly wont be able to get it fixed and that i should proly just upgrade to something newer even though i dont want to get rid of that amp. but im willing to try anything to get it to work again. 

The heat sink is the large mass of black metal that the components inside the amp are mounted to.