Hi guys:
I'm working this amp and can just not
Get to understand it. The power and
low ohm light are both on. I noticed that
The power supply MOSFETS have about
47 ohms from gate to ground, and when
Measure from the signal side of the MOSFET
Resistors there's 0 ohms. The pwm signal is
shorted to ground. Pulled out the pwm
Board and still there's a short. Any
suggestion.
Thanks in advance
I'm working this amp and can just not
Get to understand it. The power and
low ohm light are both on. I noticed that
The power supply MOSFETS have about
47 ohms from gate to ground, and when
Measure from the signal side of the MOSFET
Resistors there's 0 ohms. The pwm signal is
shorted to ground. Pulled out the pwm
Board and still there's a short. Any
suggestion.
Thanks in advance
This amp have 24 power supply MOSFETS
12 pairs, one of every pair is measuring zero
Ohms from the gate resistor to ground, it's
This normal for this amp. I pulled out all the
Gate resistor and still zero ohms to ground.
Can some one with an amp like this try to
measure this and let me know?
12 pairs, one of every pair is measuring zero
Ohms from the gate resistor to ground, it's
This normal for this amp. I pulled out all the
Gate resistor and still zero ohms to ground.
Can some one with an amp like this try to
measure this and let me know?
Just a guess, but its probably measuring zero because of the filter caps (they are parallel to the B+ and ground input) causing it to look like a short.
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