No Q213 I just lifted the legs to see if the dc went away, while I had it up I just replaced it and put it back in circuit earlier in our discussion. Q222 has not been removed from the circuit previously unless I am forgetting something?
Because it reduced the gate voltage which allowed the FETs to turn off.
What's the DC voltage across the two adjacent legs of D207?
What's the DC voltage across the two adjacent legs of D207?
D207: 1.497 vdc
Not sure what way you wanted the probes as it changes the polarity of the reading but the numbers stay the same.
The probe orientation wasn't important.
I lost track somewhere and didn't realize that Q213 was back in the circuit. Lift Q213 and measure the voltage across D207 again.
I lost track somewhere and didn't realize that Q213 was back in the circuit. Lift Q213 and measure the voltage across D207 again.
Sorry for the wait had to heat the iron.
Q213 out of circuit, Q223 shorted collector to emitter,
D201 reads: 1.469 vdc
R274 is out of circuit
Q222 was replaced along time ago before we started trouble shooting and was replaced with Mouser MMBT 3904 which is a NPN. Did I put the wrong part in that location?
The original part was a 1A marking on the transistor.
You already had me take D204 out of the circuit and it is still out so the reading I gave you is with D204 out of circuit.
Providing by adjacent you mean the bottom 2 legs of the diode?
I removed Q222 and the voltage remains the same 1.469 vdc
I removed Q222 and the voltage remains the same 1.469 vdc
I don't know where the voltage could be coming from. You removed the capacitor C226 earlier and it made no difference.
Yes, two bottom legs.
I don't know if there is much more that we can do here, According to the diagram, we've disconnected all possible sources of voltage to that diode and it still reads 1.5v. I'm assuming that you're measuring the voltage with the meter set to DC volts and not diode check.
Yes, two bottom legs.
I don't know if there is much more that we can do here, According to the diagram, we've disconnected all possible sources of voltage to that diode and it still reads 1.5v. I'm assuming that you're measuring the voltage with the meter set to DC volts and not diode check.
Ok no biggie just add her to the scrap pile. Thanks for all your time and efforts, I am beside myself with this one. Dont know whats going on.
Just a note I removed Q213 the MPSA56 and replaced all the stuff in the circuit we removed and the DC voltage is gone on the terminal.
Thoughts??
Thoughts??
Yes but very faint and distorted sounding, you turn the volume all the way up on the head unit and you can barely hear music but sounds distorted.
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