Hello, I Have a klipsch KDA500 amplifier that has a bad power supply. It turns on after about 10 attempts but im barely getting any voltage on the -13 volt rail. I have compared voltages to a working KDA1000 with the same power supply and this is what i got. Picture with the purple line shows where the trace starts at the yellow wire and ends at the negative trace of capacitor 35v 47U capacitor and should be -13-14VDC
kda500 power supply {not working properly}
right to left
4 pin
brown 8.06
black 7.93
white -0.11
gray -0.10
5 pin
green 30.16
blue 3.29
green 2.58
red/white 3.01
red 1.11
3 pin
yellow -.759 <—— this should be -13-15VDC
light blue -0.024
yellow 13.78
3 pin
black 165
brown -166
red -165
Kda1000 operating normally
4 pin
brown 8.52
black 8.92
white -0.003
gray - 0.003
5 pin
green 32
blue 3.33
green 2.6
red/white 3.05
red 1.1
3 pin
yellow -13.7
light blue 0
yellow 13.8
3 pin
black 157.5
brown -157.8
red -157.8
55bz<—- need help identifying what this is as it is not giving me proper voltages
these are the measurements from the working power supply on the 55BZ smd component
1 -18.2
2 -18.2
3 -5.83
4 -18.71
5 -18.71
6 -18.71
The measurements from the non working power supply 55BZ chip
1 0.380
2 0.380
3 -20
4 0.420
5 0.400
6 -20
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