rockford fosgate BD1000

[Perry Babin]

Post the DC voltage on all of the pins on all of the 6171 op-amps.

 

[mike49504]

LM6171
1:0
2:1.98
3:0
4:-9.88
5:0
6:-5.84
7:9.85
8:0

the rest of the op- amps are LM636 and A2211

 

[Perry Babin]

What are U17, U5, U7 and U8?

 

[mike49504]

U17 LM6171
1:0
2:1.98
3:0
4:-9.88
5:0
6:-5.84
7:9.85
8:0

U8-LM6361
1:-9.88
2:-8.03
3:-0.13
4:-9.88
5:-0.01
6:9.10
7:9.86
8:-9.81

U7-LM6361
1:-9.70
2:-7.14
3:0
4:-9.88
5:0
6:-8.39
7:9.85
8:-9.70

U5-6361
1:-9.84
2:-5.85
3:-0.12
4:-9.88
5:0.14
6:8.64
7:9.84
8:-9.84

U9 A2211
1:0
2:5.24
3:3.84
4:0
5:-6.61 pulsing
6:0
7:10.59 pulsing
8:13.15 pulsing

u15 A2211
1:0
2:4.98
3:3.65
4:0.13
5:-9.81
6:0.06
7:6.75
8:9.84

 

[Perry Babin]

Replace U7.

 

[mike49504]

Replaced U7 Heres what i have now

1:-7.37
2:0
3:0
4:-9.88
5:0
6:0
7:9.86
8:-9.34

 

[Perry Babin]

Audio?

 

[mike49504]

still have tons of static on the outputs with no rca's plugged in and the mesha board for all the outputs gets warm

 

[Perry Babin]

Post the voltage on the op-amps again. You only need to post pins 2, 3 and 6.

 

[mike49504]

U17
2:1.98
3:0
6:0.08

U9
2:0.41
3:0.02
6:0

U8
2:-0.08
3:-0.13
6:0.42

U7
2:0
3:0
6:-0.07

U15
2:0.18
3:-0.14
6:0

U5
2:0.10
3:-0.12
6:0

 

[Perry Babin]

U17 also appears to be defective.

U9 and 15 aren't op-amps.

 

[mike49504]

U17
2:0
3:0
6:0

 

[Perry Babin]

Audio?

 

[mike49504]

Yes static is gone and it produces audio I will put this back in the sink and test the audio more