Behringer ep4000 heats transistor channel1
Good people there are take readings of the voltages of the output transistors of channel 1 (5200) which heats. Vce 28v and in reference channel channel 2. Vce 48v only heats the 5200 someone who can guide me. I respect the reading I take. I also check the amp's voltage operates. Ic7 and ic8 are mormal. And that they advise on the values of the pot vr4 vr5 and vr6 these 12ohms.
There are take the source voltage readings of channel a. where I would have to find 110v there are 73v and where there are -110 there are -73v where there are I would have to find + 55v there are +37 and therefore -55v there are -37v.
I give you a positive henrry, but better measure them with a capacimeter.
If you turn off the power and the voltage is correct and when you turn it on it drops, it is the circuit and not the source.
and be careful that continuous tension is very dangerous.
Good comment.
this is amp 7 I forgot to say measure them too
now the other voltage drop pum is also open tracks
Whenever I repair Behringer, I change all the failed components if the repair does not go well the following point -
clipe ahead of time
clip is on
operational ic 4558 uneven voltages
transistor heating
Good people there are take readings of the voltages of the output transistors of channel 1 (5200) which heats. Vce 28v and in reference channel channel 2. Vce 48v only heats the 5200 someone who can guide me. I respect the reading I take. I also check the amp's voltage operates. Ic7 and ic8 are mormal. And that they advise on the values of the pot vr4 vr5 and vr6 these 12ohms.
As it is heated, the R109 lowers its resistance by temperature, the lower the resistance, the lower the voltage, the lower the current of the tracks.
That's why they are all at 12 Ohm, the one in charge is R109, and they don't get it,
The transistors do not respond, patiently measure all components including the triac.
I see it that way, much encouragement.
Behringer + EP4000.pdf [302.14kb]
Reparaciones similares solucionadas
¡Aprende a reparar con estos cursos YoReparo!
