Dean Edge 4 Bass electronics quit working

http://www.guitar-repair.com/

Make sure you have two wires soldered to the output jack on the bass. having a wire lose is not purposely put like that, for no sound from the bass then that wire is either from the pickups and connects to the pots on the bass or on the output jack. I would suggest taking it to an authorized dean dealer to inspect the wiring.

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Should be pretty simple, one pickup, one volume control, one tone control:http://www.deanguitars.com/metalman_series.php Try here:http://www.deanguitars.com/services.php Toll free phone number.

This would be characteristic if the battery is failing. Try a new battery. Batteries fade out and then they tend to recover if not used for a few minutes. The only real way to test the battery is with a brand new one. Try that first IF you have not done so.
One other problem is if the output jack is going bad. The jack is a stereo type and they use the ring connection on it to ground the battery to turn it on. If that contact gets marginal, then the battery voltage to the preamp collapses and sound fades out.
It is UNLIKELY there is a problem with the pickups causing this. A cracked circuit board could also do this but I don't think it would wait 20 minutes. Delays like that point to the battery. DO NOT believe any battery indicators... they OFTEN lie !!!

These often use a special Allen wrench. It is easy to damage the neck.

I would recommend taking it to a guitar place/shop and have them evaluate that the neck is the problem. There are other problems such as the bridge that can cause this.

The wiring in the back is so very thin and the circuit board isn't attached to anything but the wires that are attached to it. I found two weak solder joints there and one in the battery compartment (you'll have to remove it to get to the solder joints). I don't know which repair did the job, but it's working for now, anyway. I'd like to replace the tiny wires but there's not enough room in that compartment. I, also, had to replace the 4 bridge screws with larger diameter SS screws months ago as ALL 4 were stripped. Thread too fine for wood that soft. Come on Dean, step it up a notch! The bass plays and sounds great.

if i was you i would take the guitar apart and see if there is any loose wires especialy at the 1/4 inch inputs.

Here is their support site:http://www.deanguitars.com/home.php They advise you to contact your Dean dealer first but you can email them and ask anyways.

You might find it at http://www.mediawebsource.com/guitar/pickup.htm If you can figure out what brand the pickup is you could check the manufacturers site. http://www.guitarelectronics.com/category/wiringresources/ has original factory wiring diagrams for guitar and bass for various pickup manufacturers. Hope this helps.