Rockford fosgate P8002 goes into protect - diyAudio
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Old 12th October 2016, 08:20 PM   #1
chipper is offline chipper  United States
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Default Rockford fosgate P8002 goes into protect

I'm starting a new thread for this one. So far I replaced output transistors with new ones all matching. Even replaced source resistors. I get audio clear audio but as soon as it's turned up past a certain volume it'll go into protect. I'm not sure what R1105, R1098, 1090 are I dint replace those. Any ideas what's causing it to go into protect? Thanks!
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Old 12th October 2016, 08:22 PM   #2
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Old 14th October 2016, 10:32 AM   #3
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When you start a new thread for an amp that you had a previous thread for, post a link to the old thread.

Those resistors and R1079 drive over-current signal back to the over-current protection circuit.

Does it go into protect with either channel when you only drive one channel at a time?
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Old 14th October 2016, 06:20 PM   #4
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Gotcha! Only the left channel puts amp into protect when volume is turned up half way the other channel doesn't. What I noticed even with no load connected amp will still go into protect. I replaced the outputs in the left channel as well as the source resistors since they were out of tolerance. It plays music on hp and ap and bass signal isn't distorted either.
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Old 14th October 2016, 07:21 PM   #5
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Lift or remove D1002 and D1004. Does that change the way it goes into protect?
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Old 23rd October 2016, 05:34 PM   #6
chipper is offline chipper  United States
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Removed D1002 & D1004 amp still kicks into protect at half volume.
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