MTX Thunder 81000D Repair

Here I repair an MTX 81000D which is the older brother to the 1501D, and for what I thought was the same issue as the last time. Blown power supply, and additionally a blown capacitor. But, as we find out. Not the same issue.

[@yanrojas8980]

Amigo temgo un mtx thunder elite 15001D. Amplica bien pero las 2 bobinas de acople de salida tipo toroidal se calientan excesivamente.hechan humo en poco volumen o alto . Igual calientan. Pero veo q si amplifica y no se proteje. Que crees q sea ...

[@coreyviolette1850]

I have one of these that needs repair. Would you be interested in getting it going for me?

[@AllAboutTKK]

Like others, I wanna know, what’s the capacitor and where would you recommend we found that to check our broken amps?

[@THEtechknight]

Id have to look back and see... its been awhile.

[@afishguy9654]

nice work! i have some work i need help with. any time?

[@jorgeibarra2096]

I have the same capacitor that is blown out would you be interested in fixing it?

[@hernangonzalez7656]

Is 1000 rms or 1500 rms ??

[@anthonypacheco7606]

It will put out 1500 watts rms at 54 volts. Use a 50hrtz test tone and a digital multi meter set it to ac voltage and set your eq to flat put all your bass / terible etc. To 0. I have this amplifier tuned correctly and it pushes my mtx 9500 15 inch subwoofer to its maximum performance!! Good luck 👍

[@gorrionpy]

Where to repair amp mtx

[@ntividad]

Hola amigo saludos buen día tengo un amplificador mtx thunder 81000d no me da nada de audio si prende me gustaría si tu me pudieras ayudar con eso ya e buscado aquí en México y nadie le a podido encontrar la falla me podrías ayudar con eso porfavor

[@aubriedenman2609]

I have the same amp in protect mode. Interested in fixing it?

[@THEtechknight]

Not accepting outside work atm due to the semiconductor shortage, and lack of free time. Maybe in the future though.

[@djbell9939]

Power supply gate resistor valve ?

[@THEtechknight]

It's been a while since I've worked on one but I'm going to say 47 ohms. But it also might be 22 ohms

[@phillipvill]

Does that capacitor have the same tune as the others, cause if not that repair will have a short life, it would be better to just change all of them, cheap fix

[@THEtechknight]

There's also a point where budget becomes a factor so you to work within your means as well. Keep this in mind. Not everyone wants a $500 repair from a technician. There are certain bare-minimum boundaries i don't cheat/cross such as matching all FETs. But matching caps aren't that important especially if they test fine. but if they want to pay more? Sure i will change them all.

[@pafoofnic]

Could it possibly be the capacitor shorted and blew the supply?

[@THEtechknight]

Its possible, but the capacitor did not measure shorted.

[@ajmercado2010]

Where did u get the caps? I have same amp with 5 bad ones can’t find them

[@THEtechknight]

@@ajmercado2010 Mouser or Digikey.