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Rockford Fosgate 250m2
Rockford Fosgate 250m2
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Old 31st May 2011, 01:03 PM   #1
seankane is offline seankane  United States
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Default Rockford Fosgate 250m2

Hello everyone I have a Rockford Fosgate 250m2 giving me a problem.

I recieved the amp with a blown power supply and shorted output fets. I removed all the output fets to eliminate problems upon powering up.

I replaced all 6 p/s fets with new IRF3205 fets, replaced all 6 gate drivers with new 47 ohm resistors, and replaced 4 drivers transistors. The amp will not power up it draws full current on my power supply and makes a loud buzzing noise insided the amp and the p/s fets get hot.

Since there is no output fets installed it cant be a shorted output. I was wondering maybe if it could be a shorted transformer?
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Old 31st May 2011, 02:40 PM   #2
Perry Babin is offline Perry Babin  United States
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It could be a shorted transformer.

Have you checked the resistance across all of the solder pads for all of the missing and newly replaced transistors to see if there is possibly a solder bridge?

If there are no bridges, remove the rectifiers to see if that reduces the current draw.
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Old 14th June 2011, 11:00 PM   #3
seankane is offline seankane  United States
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There are no solder bridges, I will pull the rectifiers tonight to see if that reduces or eliminates the current draw.

If it does what would that determine???
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