Question about JBL Northridge E 250P Subwoofer

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E250P Not powering on... chirping noise

My JBL E250P started having problems a little while ago. I would always leave it on standby whether it was in use or not. I started hearing an intermittent chirping noise coming from it every 10 minutes or so. When the sub was on it would work for about an hour and then stop working all together. After this went on for a while the sub finally died and will not power on at all. What do you think the problem is? Bad power supply?

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I had the same chirping issue with the sub. I found a document that talks about replacing the C5 capacitor for a 47mfd type instead of 470mfd. This solved the chirping issue however I still experience an intermittend issue with the power on indicator flickering off and on. Anyone hear of the fix for this?

Posted on Sep 12, 2008

  • ajentilucci Sep 12, 2008

    Correction to the above solution:



    C65 capacitor instead of C5 capacitor.

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This is a very common issue with this amp - it is one that needs addressed or it will eventually cause the amp to burn up - I can repair this type of amp. Look for my add here and also I am on Ebay.

Posted on Oct 23, 2011

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