Now is on the board but I don't have wave when injecting 45 Hz, I think it should have even if it has no mosfets on the board and check if audio comes in and if I have
Is the relay clicking after a few seconds?
If so, connect a load across the speaker terminals and wait for the relay to engage before checking for a signal.
If so, connect a load across the speaker terminals and wait for the relay to engage before checking for a signal.
I have seen that op-amp, when I checked it, read 170F in a very well air conditioned shop. I put heat spreaders on the smaller transistors because they regularaly fail due to heat but only rarely have done so on the op-amps because they so rarely fail.
I have not installed them because I have not received a signal, I see a signal on pin 8 of the board but it does not go to the mosfets
The 1D transistors in the yellow square need to be replaced on every board that you ever see like this.
The drover board will not produce an audio signal. Between the input to the driver board and the output of the inductor (after the output FETs, there will be nothing resembling audio.
The drover board will not produce an audio signal. Between the input to the driver board and the output of the inductor (after the output FETs, there will be nothing resembling audio.
still does not send audio, at this moment I dedicate myself to make the diagram to understand this tablet more fully, now, in the first transistor 1D I can see a square wave when it injected 45 Hz signal on the basis of there but,There is no more signal after there, I follow with the diagram to see if I can do it right
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I need the voltage with one probe on each side of the resistor. If that was referenced to ground, I think one should have been -15v.
What's the DC voltage on all 3 terminals of Q13?
What's the DC voltage on all 3 terminals of Q13?
2 components to the left in the photo, there is a diode marked J2. What's the voltage on each of its terminals?