The 2 collectors are actually only one.
This transistor looks like it's weak/defective.
Post a sharp, good quality photo showing Q22 and the components near it.
This transistor looks like it's weak/defective.
Post a sharp, good quality photo showing Q22 and the components near it.
Q22 resistance check
Base to collector= 00.00 ohms
Base to emitter = 00.00 ohms
Collector to emitter= OL
Base to collector= 00.00 ohms
Base to emitter = 00.00 ohms
Collector to emitter= OL
Those resistance can't be accurate. If so the 3 terminals would all have identical voltages.
It's not common for a multimeter to have 2 digits to the left of the decimal. What meter are you using?
It's not common for a multimeter to have 2 digits to the left of the decimal. What meter are you using?
If it was truly 000.0 collector to emitter, the voltage on the collector and emitter would be identical.
R150 should be 4.7 ohms.
Did you confirm that no terminals of the PS FETs were shorted?
Are the two terminal of R1 connected directly to the base and emitter of Q22?
R150 should be 4.7 ohms.
Did you confirm that no terminals of the PS FETs were shorted?
Are the two terminal of R1 connected directly to the base and emitter of Q22?
R150 = 23.1 ohms
I will check ps fets again now... nothing was shorted before I overheated board and caused our loss of power
I will check ps fets again now... nothing was shorted before I overheated board and caused our loss of power
Power supply fees
4 ps fets gate to source= 0.994 Kohms
4 ps fets gate to source= 0.997 kohms
8 ps fets gate to drain= 1.085 Kohms and rising
8 ps fets drain to source= 27.8 ohms and rising
It's rising from the capacitors correct?
4 ps fets gate to source= 0.994 Kohms
4 ps fets gate to source= 0.997 kohms
8 ps fets gate to drain= 1.085 Kohms and rising
8 ps fets drain to source= 27.8 ohms and rising
It's rising from the capacitors correct?
Typically, the rising value is due to capacitors.
Does your meter read 0.0 ohms from the base of Q21 to either terminal or R96?
Does your meter read 0.0 ohms from the base of Q21 to either terminal or R96?
8 output fets gate to source = 9.91 Kohhms
8 output fets gate to drain = 15.26 Kohms and rising
8 output fets drin to source = 5.72Kohms and rising
8 output fets gate to drain = 15.26 Kohms and rising
8 output fets drin to source = 5.72Kohms and rising
Q21 base to r96 = 26.38 Mohms and dropping
Q21 collector to r96= 0.0ohms
Q21 emitter to r96= 33.6Mohms and dropping
Q21 collector to r96= 0.0ohms
Q21 emitter to r96= 33.6Mohms and dropping
It looks like there's a trace coming out the side of the leg on q21 directly to r96 ...
But honestly I read wire diagrams so this figuring out myself where the traces go by following them visually is new to me and I doubt myself alot and second guess myself .
Does R1 look like it's original to the amp? It's not what the information I have says it should be.
Does it read 100 ohms?
Are the two terminal of R1 connected directly to the base and emitter of Q22? If not, what does it directly connect to? Confirm 0 ohm connections with your meter to confirm direct connections.
Does it read 100 ohms?
Are the two terminal of R1 connected directly to the base and emitter of Q22? If not, what does it directly connect to? Confirm 0 ohm connections with your meter to confirm direct connections.