Κάτι που βρήκα.
Sorry about the problem you experienced. Anything said about what caused your failure is pure speculation. Therefore, I am reluctant to post possible causes here because they are so easily misinterpreted. So keep in mind this is pure speculation and is based solely on our experience as to the most likely cause of this type of problem. It is not an exact diagnosis of this specific problem. We are not trying to make this someone else’s problem, this is for information only. Enough disclaimers, here goes.
One of the most common causes of catastrophic failures in ESCS is using inadequate batteries or inappropriate plugs (too high resistance) between the battery and the ESC. Sizing batteries based on battery company’s claims of continuous current output is risky at best. It is always better to have at least 25% more capacity than you think you will need for a specific application. Inadequate or stressed batteries create excessive ripple current. The capacitors on the end of the ESC are there to handle ripple current. If there is too much ripple the capacitors become drained then overheat and either burn their leads, melt themselves off the board or explode. Once this occurs the ripple current cascades through the power boards burning the FETS. In the picture here the capacitors obviously melted off leading to the possible conclusion that ripple current destroyed this ESC.
The other common problem with helicopters is static electricity. This is more of a concern with belt drive helis but also occurs the torque tube helis. If you look up Van de Graaff generator in Wikipedia
http://en.wikipedia.org/wiki/Van_de_Graaff_generator you find that these generators look surprisingly like a belt drive heli. We all know that static is the enemy of microprocessor controlled equipment. Minimizing static is a work in progress with heli manufacturing companies. On our end, we created a new controller board with increased anti static circuitry to help deal with problems. It is not within our preview to say which helis, or what belts or other equipment is good or bad. This information is available within the heli community. I can say that we have worked directly and indirectly with heli companies to help them deal with this problem. Again, I cannot tell if this is what happened to this specific ESC.
Jimbo40, thanks for the note about how to deal with this specific problem.
Bernie
Με λίγα λόγια καλές μπαταρίες κοντά καλώδια και κονεκτορες να αντεχουν το φορτίο.
Προσοχή στον στατικό ηλεκτρισμο.
Aeromodelling GR 
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