Diagnosing a MTX Thunder 275X

[noisejunky]

Hello community,

I have a Thunder 275x that worked really good till now. It instantly pops both fuses everytime I put a set in the amp! Anyone have knowledge on how to figure out what caused this?? (diagnosis, repair, etc)

Thanks, Noisejunky

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[ThatChevyGuy 5,000+ posts]

its blown.

Contact Db-r.

 

[plugitin 5,000+ posts]

nice amp...GL

 

[noisejunky]

Does that mean it can't be fixed? I have to believe that there is nothing that can't be fixed.

Thanks Again

 

[midnightg35x 10+ year member]

Most likely you blew out (shorted) the power supply FET's. It can almost certainly be fixed... just depends on if its by you or someone else.

 

[jco1385 5,000+ posts]

Most likely you blew out (shorted) the power supply FET's. It can almost certainly be fixed... just depends on if its by you or someone else.

if he is here asking this, he can't fix it. def worth fixing though. nice amp.

 

[noisejunky]

Correct Observation!,

I don't know how to fix it at this particular moment. If I knew where on the amp these "FET's" are and knew how to check them, I do know how to use a meter, and handtools. I'm sure its not over my head.

Again, Thanks!

 

[jco1385 5,000+ posts]

getting the correct parts is the challenge, and then making sure nothing else died with the fets. you'll need to have special testing equipment and shit for all that.

i'd contact db-r or any of the other amp repair guys here.

 

[midnightg35x 10+ year member]

http://www.bcae1.com/repairbasicsforbcae1/repairbasics.htm

 

[Spooney 10+ year member]

the guy that made that amp repair website is a genius when it comes to amp repair. He's like one of those mechanics that can listen to your car and know exactly whats wrong with it. He has helped me fix many amps by giving him a simple description of the issue.

 

[jdawg 5,000+ posts]

those amps have a problem with the rca inputs coming loose and causing wierd shit to go on insider the amp. Dbr can fix if he isnt swamped, also ampjunkielikeme, dbr said if the fets are blown there is a beefier fet that can replace them, I have a 250x with a non working channel (think it got wet) and a 2300 that im going to send out one day