Question about Rockford Fosgate T10001BD- Car Audio 500watts Mono Power Amplifier Car Audio Amplifier
The capacitor in the amplifier is giving a high pitched buzzing sqealing sound when power is applied to the amplifier. its the second smaller capacitors from the biggest ones, they are the ones bunched together, there are about 4 but only one is doing it, it also has a bump on the top like it is about to pop. the amplifier doesn't turn on, it only sqeals. does anyone have any ideas.... it would really help.. thanks
If the top is split open, it has vented electrolyte. This is most commonly caused by more serious problems in an amp. Do the other adjacent caps show any signs of damage?
Is it blowing fuses? Connect a 20 amp fuse in-line with the B+ line of the amp. If it blows the fuse, the amp is drawing excessive current and most likely has more serious damage than the single vented cap.
Posted on Dec 04, 2007
My amp has this same problem... Did you order the parts yourself and replace them or send it in for a repair?
Posted on Sep 04, 2009
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That sounds like you may have a problem with a bad solder joint on one of your switching transformer connections. If you have a soldering iron and some solder, you should resolder the transformer connections. Also check the whole board for bad solder joints. If this does not work there might be a chance that one of your capacitors has gone bad due to aging. You will need an oscilloscope and a schematic to measure the voltages on the capacitors to make sure that they are within the recommended ripple voltage range (open capacitors loose their ability to filter so the ripple voltage increases and this causes instability in the DC voltage level). However the fact that when you apply mechanical pressure the problem abates, this is pointing towards a bad solder connection.
I hope this helps,
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