Question about Rockford Fosgate Power 1500.1BD Car Audio Amplifier

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Need help My amp worked when put away. Then a year later when I tryed to hook it back up and it makes a high pitch noise and the protection light comes on. If I push down on the bottom of the amp it quiets down.

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Hello koty,

 

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,

Thank You,

Shuttle83

Posted on Oct 18, 2007

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