So I repaired a t10001bd and it had a fee shorted outputs. I replaced them all with matching irfp3415's power supply is intact. The amp remains in protection. I remember having this issue before on similar amplifiers. Some help would be most welcome.
There's a section dedicated to it on the repair_tutorial/miscellaneousstuff/rockford/punchbd1500/repairnotesrockfordbdamplifiers.htm page if you want to understand more about troubleshooting the problem.
U4
1) 4.987v
2) 6.62v
3). 13.64v
4). .000v
5) 2.598v
6) .586v
7) 7.32v
8) 2.495v
9) 4.666v
10) .000v
11) 2.598v
12) .001v
13) 6.62v
14) 3.304v
1) 4.987v
2) 6.62v
3). 13.64v
4). .000v
5) 2.598v
6) .586v
7) 7.32v
8) 2.495v
9) 4.666v
10) .000v
11) 2.598v
12) .001v
13) 6.62v
14) 3.304v
U9
1) 8.39v
2) 8.31v
3) 13.63v
4) 4.076v
5) 4.995v
6) 4.996v
7) 7.69v
8) .215v
9) 1.712v
10) .217v
11) 1.721v
12) .000v
13) 6.99v
14) 7.00v
1) 8.39v
2) 8.31v
3) 13.63v
4) 4.076v
5) 4.995v
6) 4.996v
7) 7.69v
8) .215v
9) 1.712v
10) .217v
11) 1.721v
12) .000v
13) 6.99v
14) 7.00v
U10
1) -.099v
2) 13.46v
3) 13.90v
4) .224v
5) .739v
6) -.099v
7) .000v
8) 4.99v
9) -.049v
10) .228v
11) .799v
12) .000v
13) 4.99v
14) .000v
1) -.099v
2) 13.46v
3) 13.90v
4) .224v
5) .739v
6) -.099v
7) .000v
8) 4.99v
9) -.049v
10) .228v
11) .799v
12) .000v
13) 4.99v
14) .000v
Which protection LED is brightly lit?
The power supply looks like it's functioning. What's the DC voltage measured directly across the center legs of the two rectifiers?
The power supply looks like it's functioning. What's the DC voltage measured directly across the center legs of the two rectifiers?
66.4 across the rectifiers (not to ground)?
It's normal for one of the protection LEDs to be lit dimly. I don't think it's in protect mode.
Do you have rail-rail oscillation on the output transistors?
It's normal for one of the protection LEDs to be lit dimly. I don't think it's in protect mode.
Do you have rail-rail oscillation on the output transistors?
It out now drawing 2.1amps of current and oscillating. Before it wasn't oscillation or priducting audio it clear now.
While it's working, re-measure the voltage on all points you did previously. That way, if it stops working, you have a reference.
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