I have the JBL Eon 515 Speakers.. I found a blown fuse in the amp, replaced it with a fuse from the speaker that was working correctly, and switched the power cords and it still wont come on. Where do I go from here? Theres not a lot of troubleshooting information over the www. Help please??

Hello Dane, if the fuse is good, you can have the speaker and driver of the horn, open, therefore it will not sound

Hola Dane, si el fusible esta bien, puedes tener el parlante y el driver de la bocina, abiertos, por lo tanto no va a sonar

You could try switching around the cables but most likely the output driver transistors are blown.

Sounds like bad power supply capacitors

Several ways. Easiest way is to just hook up mic to speaker via XLR and make sure on jbl speaker switch is set to Mic not Line. ( for volume ). Ideally you would hook mic to a console ( mixer ) and come out of mixers main out (l/r) to 2 separate jbl speakers ( being powered no amp is necessary ) for stereo!

If you can watch the fuse kind of twitch. Most likely you have somthing shorted in your output amps. ( the ones on the heatsink underneath PCB) you'll probolly need a tech for this one to change out the transistors. Still under warranty?

you want JBL Professional group if this involves the Eon product line.

1-800-852-5776

Or on the website

http://www.jblproservice.com/

probably blown fuse or a filter. take the unit to stereo shop

You don't need schematics to replace the fuses.
Open the speaker unit by unscrewing the back. The fuses are located near the on/off switch assembly. Replace them and screw the the unit back together.
To avoid blown fuses, try lowering the volume.

These fuses are most likely 3 Amp fuses. Please note that if the replacements blow as well, that there is a problem within the amp section that will require repair.

Dan

If no warranty - remove amp and check sub to another amp to isolate speaker from internal amp. Either the amp blew a channel or subwoofer blew. JBL's are typically well built. Has this speaker often been pushed loud often?