My new Behringer VD400 echo unit works on battery,but have tried 4 different power supplies,and the unit buzzes very loudly?

There could be several reasons why your Behringer Powerplay unit has switched off and is not powering on again. Here are a few troubleshooting steps you can try:

1. Check the power source: Make sure the power source you are using is working properly. Check that the outlet is receiving power and that the cable you are using is not damaged.
2. Check the power switch: Make sure that the power switch is turned on and that the unit is receiving power. If the switch is on and the unit is not receiving power, it could be a problem with the switch or internal wiring.
3. Check the fuse: Check if there is a fuse in the Behringer Powerplay unit and if it has blown. If the fuse has blown, replace it with a new one.
4. Check for other issues: There may be other issues with the unit such as a faulty power supply, overheating or a component failure. In this case, it is best to take the unit to a qualified technician for repair.

If none of these troubleshooting steps work, you may need to contact Behringer customer support for further assistance.

Try some standards -- unplug EVERYTHING, and use the headphone out jack first. After 2-3 minutes, and it's still crackle or buzz, then it may be something wrong with the internals. Could be simple, but may be more than what the unit's worth to fix. If it DOES NOT crackle/buzz, then you might have a bad connection/cable somewhere. Just plug them all back in, one-at-a-time, and wait in between plugging in. Best of luck!

Remember...it's a process of elimination when troubleshooting any thing. Have you tried another dynamic mic that does NOT need phantom power to operate? Connect your MP3 player to the Line In 1/4" connection and see if the sound passes to the output. Other than buying a replacement power supply, these units are not economical to repair...as I'm writing they sell for $70 new online.

Hi,

Did you left the amp on overnight with a guitar hooked up to it?

Hello,

Eurolive Active speakers from Behringer suffers of bad power supply/Amp design, if you open up the back of your speaker you will probably find that the AC connector has a burnt or loose connection as well as a black spot, if not, check the power supply/power amp coils for cracked connections, let me know for improve help.

If you have the polarity correct for the connector, and adequate output from the transformer with adequate regulation and filterning, there should be little problem with constructing one or hacking the cord off the dead supply and wiring it to a new one.

The question you need to ask yourself is whether that wait is worth it? If you need it to make money with it right now- then just use care in wiring the new supply up. I have lost track to how many times I have rewired a supply to make it work on something it was not originally on. As long as the specs on the new supply match those of the old one- no problem..

For a start , check headphones out.


• if it don't work , check power supply of the preamps.


• If it is OK, could probably the main amp have fail.

But check the main volume .

Make sure you are using NAME BRAND alkaline batteries that are in date. Rechargeables will NOT work in these.

Since you just bought this, exercise your warranty (assuming you bought this new). The amp probably will have a slight buzz with nothing connected... the question is how loud it is. If you can hear it loud at five feet, that is too much. If you bought this used, prepare to have it serviced at a shop.

First of all you should try to use another guitar - if the problem is still there try using different batteries or another power supply unit and finally a different amplifier. If none of these actions lead to success i would send it back if i were you.

When you buy equipment you should always test it at the shop to avoid such problems!