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Rockford Fosgate 500x repair
Rockford Fosgate 500x repair
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Old 9th November 2017, 01:54 PM   #1
rhempz01 is offline rhempz01  United States
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Join Date: Nov 2016
Location: Milford Delaware
Default Rockford Fosgate 500x repair

So I have a 2001 Rockford Fosgate 501x drawing 2.79a of current during start up so I checked the outputs and ps fets none a shorted. No burnt spots on board other than a small cap had corrosion on it. I checked the gate resistors, and the 494 with remote and ground is
1: 38.1mv
2: 4.65v
3: 60.8mv
4: 99.4mv
5: 1.51v
6: 3.375v
7: .8mv
8: 12.41v
9: 4.74v
10: 4.74v
11: 12.41v
12: 12.42v
13: 4.99v
14: 5v
15: 5v
16: .5mv
Any ideas or help would be great.
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Old 9th November 2017, 03:46 PM   #2
Perry Babin is offline Perry Babin  United States
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Location: Louisiana
Does it produce clean audio?

Have you tried adjusting the bias?
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Old 9th November 2017, 11:59 PM   #3
rhempz01 is offline rhempz01  United States
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Join Date: Nov 2016
Location: Milford Delaware
Yes and it fixed it Perry thanks someone had it turned up...? It's perfect now.
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Old 10th November 2017, 12:15 AM   #4
Perry Babin is offline Perry Babin  United States
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Join Date: Nov 2003
Location: Louisiana
I think they sometimes creep up on their own. I've seen them biased too high in amps with the tamper-evident seals intact. And... it's also possible that someone was thinking that they could get more power by upping the bias. Little do they know that the bias is like the idle speed on an engine.
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