Ok I removed the fets again .
I notice something strange on the pads for the fets .
Q2,4,6 have strange voltages on the pads
Leg 1:1.20
Leg 2:13.90
Leg 3:1.20
Q8,10,12
Leg 1:1.20
Leg 2:13.90
Leg 3:1.20
Q73,71,69. Q67,65,63
Have the same voltages 1.22 volts on gate and source legs
I’m wondering if I have a bad 3525 again here’s what I get on the pins
Pin 1:0.00
Pin 2:0.24
Pin 3:0.00
Pin 4:0.00
Pin 5:0.16
Pin 6:0.00
Pin 7.0.00
Pin 8:0.45
Pin 9:0.00
Pin 10:0.00
Pin 11:0.00
Pin 12:0.00
Pin 13:13.06
Pin 14:0.00
Pin 15:13.06
Pin 16:0.47
I notice something strange on the pads for the fets .
Q2,4,6 have strange voltages on the pads
Leg 1:1.20
Leg 2:13.90
Leg 3:1.20
Q8,10,12
Leg 1:1.20
Leg 2:13.90
Leg 3:1.20
Q73,71,69. Q67,65,63
Have the same voltages 1.22 volts on gate and source legs
I’m wondering if I have a bad 3525 again here’s what I get on the pins
Pin 1:0.00
Pin 2:0.24
Pin 3:0.00
Pin 4:0.00
Pin 5:0.16
Pin 6:0.00
Pin 7.0.00
Pin 8:0.45
Pin 9:0.00
Pin 10:0.00
Pin 11:0.00
Pin 12:0.00
Pin 13:13.06
Pin 14:0.00
Pin 15:13.06
Pin 16:0.47
Last edited:
Replaced the 3525 .
Still have drive issues .
This is Q1 first pic Q2 second pic .
Scope settings are 5us 5votls/div in both pics
If I put a fet in locations Q7 or Q8 the fets get to hot to touch within 2 secs and amp draws excessive current
Still have drive issues .
This is Q1 first pic Q2 second pic .
Scope settings are 5us 5votls/div in both pics
If I put a fet in locations Q7 or Q8 the fets get to hot to touch within 2 secs and amp draws excessive current
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