Need help with fronius transtig 2000

[zox]

I received a broken device TT 2000, I'm trying to get it working, but it's difficult. It works like this: all LEDs work normally, both LED displays work and show the default parameters normally, the switch for selecting the operating mode works, everything works fine, but I have no output welding current, nor HF pulses. when I choose welding with an electrode, the led bulb also works, the display shows the height of the set current, but I don't have the necessary voltage for welding at the output. Can someone help me, or if they have a service diagram to send me, it would help me a lot...

 

[matty_wales]

Those 3 white (with brown scorch marks) power resistors look a bit suspect. Try seeing if they have gone open cct or reading the wrong value with a ohm meter

 

[zox]

Do you mean these resistors, I measured their value and they are correct, they only changed color due to heating, but they are all ok. I don't know if the control LEDs would even glow if they were burned out?

 

[kamil0305]

Hello
Problem solved? Anybody have wiring diagram for this device?Photo not good quality but looks for me like something missing here where is the unplugged connector

 

[Dutch Welder]

I think there should be a second board there.
A board with different voltage values and outputs.