Question about Rockford Fosgate Punch P5002 Car Audio Amplifier
Just like the title says, when I hook up the ground to my amp, both the thermal and power lights go off. When i remove the ground, they both light up again. I have done things in some of the wrong order, "had rcas in first", been connected to the battery and tested the ground at the back...but I don't think thats the problem. I am using 10 gauge wire for a 250 rms watt amp, and I just cant figure out why when I ground the amp, the lights go out. Please help!
Well This is a interesting problem. In this amp chassis ground and Power supply ground should be the same. With no power applied measure resistance between amp's chassis and Ground terminal of amp. Should be Continuity (low resistance 1-2 ohms or less ) if not you have a burnt ground trace in the amp most likely because amp had poor ground to Ground terminal and was Drawing its current thru chassis or thru Rca Ground which I have seen happed on this amp in the past. F.Y.I I have repaired lots and lots of Rockford amps usually shorted mehsa bar (output / power supply rails) or burnt traces otherwise pretty tough amps. Questions email@example.com
Posted on Jan 11, 2008
It sounds like an internal problem. you may have some power transistors that are shorted, but since this is a rockford they may be power MOSFETs instead.
Posted on Jan 07, 2008
You shouldn't have the power wire connected to the amp without having the amp's ground terminal connected to a good ground. With some amps, it will damage the head unit.
Does the amp power up normally if you connect power and ground and then apply remote voltage (turn the head unit on)?
Posted on Dec 18, 2007
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Posted on Jan 02, 2017
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