Hola realice el cambio de scr s4025l, el cual ya se encuentra normal.... Lo que pasa es que tengo una resistencia quemada... Tiende a infinito y va conectado al compuerta del S4025l, el cual no permite ni la corriente y voltaje llegar adecuadamente, alguien que me pueda apoyar para el valor de la resistencia 14. Es de una tabla MC2100lts-30


Mod translate:
Hello, make the change of scr s4025l, which is already normal .... What happens is that I have a burned resistance ... It tends to infinity and is connected to the gate of the S4025l, which does not allow current and voltage arrive properly, someone who can support me for the value of resistance 14. It is from a table MC2100lts-30

 

The resistor is a 27k 1w
Max.

 

Thank you... I am going to buy it.

 

If a resistor failed and burned to an open condition, there was a reason for that to happen. And so there is something else that is not correct. If it was the gate drive resistor that is intended to limit gate current that burned, I suspect that the SCR has become short circuited. A resistor will fail if the current is excessive. They very seldom fail for no reason.

 

If a resistor failed and burned to an open condition, there was a reason for that to happen. And so there is something else that is not correct. If it was the gate drive resistor that is intended to limit gate current that burned, I suspect that the SCR has become short circuited. A resistor will fail if the current is excessive. They very seldom fail for no reason.

It is not the gate drive, it is a triac that is on the output of the H.V. DC bridge, the resistor is from output (k) to GND , The triac turn on is controlled from the MCU, and it appears it is used to ramp up the Main DC at switch on.
Max.