Why is my speaker have flashing lights and no sound?
No sound and lights flashing?
I dont know I am having the same problem
Device and repair information for the Behringer Eurolive B212D speaker system.
Bit confused here. You're stating a wireless microphone. Have you got some sort of wireless equipment connected to either the Behringer Eurolive B212D XLR input or the 3.5mm TRS input connection? If not how is your wireless microphone's output being connected to the input(s) of the speaker?
According to what I can find out the Behringer Eurolive B212D does not have wireless capability.
If you do have some sort of wireless microphone interface equipment connected then I'm assuming that you have got it setup somehow as per the image below. If not and your wireless microphone is 'connected' to another piece of equipment for it to work, check its' connection to the speaker(s) and ensure that it is connected to the appropriate input and setup as per below depending on input connected.
If the microphone? is connected to the XLR input (as shown in the image) set the level adjustment on both the speakers half way between the centre (vertical) position and the maximum position. (turn the selector clockwise).
If the microphone? is connected to the 3.5mm TRS input socket set the level adjustment on both the speakers half way between the centre (vertical) position and the maximum position. (turn the selector anti-clockwise)
By speaking into the microphone, adjust the level adjustment on both of the speakers to get the desired volume. (Also check the output level of the wireless equipment?- if any- to see that it is not set too high). If the clip light comes on (on either speaker) it is too loud and needs to be scaled back until the light goes out. Also adjust the equalizer controls on both speakers to get the desired 'sound'(bass and treble mix).
When you run an amp into clipping, quite often bad things happen. The initial thump is probably because the protection circuit has not completely engaged yet or is somewhat defective. Basically the amp section now needs some work. I would expect to find that the output transistors are shorted. I believe that this unit uses discrete transistors for outputs. This should be a fairly simple repair for an experienced amp repair individual.
I had the same issue with one of my Behringer B115W's. I tried twice to get it repaired under warranty ... Behringer ignored both of my on-line requests.
Because I have two gigs coming up, I decided to fix it myself. I was expecting a "bad Capacitor" issue on the power entry side ... (i.e. symptoms dim pulsing LED's and no sound)....
to my surprise ... all caps looked good.
So I re-seated all connectors and put it all back together and it's started working fine again.
I have a 115D that's doing the same thing, I just removed the amp, even took it out of it's metal case....still flashing, no sound, caps all seem fine, no shorted power transistors and nothing looks burned. Regarding the "wait 2 or 3 hours" it sat for a week before I was given it to repair, I hope there i a factory somewhere this guy can buy an entire amp from, it only sells for $300 and my repair charge will be $200 if I can fix it.,...doesn't seem worthwhile to repair
I’ve been having a similar problem with my B212 D. When I turn it on, both lights flash and then turn off instantly. There's also an audible, but low volume, thump from the speakers when it switched on. This equipment was used in very high volumes, started clipping and automatically turned itself off. It happened three times until it eventually crashed on stage.
The problem is simple. The capacitor dan the i.c has spoil. Please check and chamge two 47uF 35v and I.C 1271A. Change this will settle the problem. Please check also other bloated capacitor if you see it when you open the amp. I suggest use a glove to protect your hand from CRC COMPOUND. TQ. thanks me later.
I can confirm also that replacing 47uF 35V capacitors C2 and C7 fixed the flashing led problem on power up.
I have a B115MP3 unit and all is working fine again.
The original capacitors did not look faulty and measured approx 42 to 45uF but replaced them anyway and problem resolved.