good afternoon gentlemen, I have a problem with the mtx 81000D amplifier, it arrived with burnt source and output mosfets, replace parts, turn on the three led lights, I have + - 15 volts in operations, + - 78.5 volts in diodes (I don't know if this voltage is exceeded), there is no current consumption, there is no sound, a variation of mv in the output that restarts every second (100-300 mv), any ideas? Thanks in advance
Do you see audio reaching the op-amp in the front-end of the class D section?
Is the gain above the minimum position?
When you turn the gain, do you see pulsing DC on the output of the amp?
Is the gain above the minimum position?
When you turn the gain, do you see pulsing DC on the output of the amp?
Beginner's mistake, I realized that more than some regulator transistor isolator and output mosfets were grounding to the heatsink, I changed isolators and I no longer have the reset cycle on the output, it already remains on without alterations in the audio output .
However, I still have no audio, the gain of the amplifier is halfway, by connecting the RCA signal to the RCA input of the amplifier I have no change, but if I connect the signal from the RCA to the RCA output of the amplifier, it is heard in the horn, but without power, barely noticeable.
by the way, if there is variation in the audio output of the amplifier when I raise or lower the gain
Do you see audio reaching the op-amp in the front-end of the class D section?
When you turn the gain, do you see pulsing DC on the output of the amp?
Do you have audio on pin 7 or U135 (behind telco jack? Working from incomplete notes)?
The preamp section of this amp is similar to the attached amp. See if it helps.
When you turn the gain, do you see pulsing DC on the output of the amp?
Do you have audio on pin 7 or U135 (behind telco jack? Working from incomplete notes)?
The preamp section of this amp is similar to the attached amp. See if it helps.
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