When load connected I got good oscillations for 1 second then it went into protect and trying to pull current. Using current limiter so it stayed near 1.7amps and protect light flickers.What happens if you connect a load across the speaker terminals?
After trying with the load and after it gone into protect. Now without load there is no oscillations. I removed rectifiers and still no oscillations and this is without load on speaker terminals.Remove the rectifiers and re-check the drive signals.
No oscillations on driver board now. Before applying load yes I had oscillations. 3 pin remaining at 3.2v. Even after removing remote.Do you have oscillation on the output pins of the driver board?
Is the mute line dropping fully to ground?
That has to be VERY near 0v for the output drive to be present.
Is it producing drive to the power supply FETs?
Without rectifiers there is no high side oscillations. Only low side oscillations. But from driver board I have oscillations on two pins. Also both the optocoupler has oscillations on pin 6
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- General Interest
- Car Audio
- Orion cobalt CB1500.1D