there you have it. The destroyed burnt TRIAC with cables and aluminium-cooling.

This one broke at the housing, look at the red arrow. The pins are bent directly at the housing, so this destruction occured at the montage of the triac ! bad. :( The current let it explode and damaged it complete.

cables look ok, platine is ok too. It looks burnt, but this is only black smoke.

Now we have to drill out that part...