check the microlab B77BT music speaker , unexpectedly no error - repair and rework 

I've got the same problem. Now I'm looking for solution.

@@seekmostudio I have sold it to guy who can fix it

@@bazosmarek7981 i think b77 have a nice sound and cool design for good price so i will try to fix it. I believe that its "only" power supply problem

@@seekmostudio did you find any solution :)? my pair just died, no dioda led, llooks like power isnt going into speakers

@@ZombiesGamerGuy no, still the same