Skedgy Sky
100 W
I've noticed that in building or repairing controllers, residue is left behind from the solder.
I've done (almost) my best to clean it but this sometimes comes up:
Watching the board closely after powering up, I first see smoke. I cut power, examine.. and find a charred path between the FET legs.
If I don't clean the problem up, it results in blown FETs.
It's as if any residue between the pins becomes a conductive path, and results in a short that blows FETs on that phase.
Has anyone experienced this?
Any cleaning techniques that I can try to eliminate shorts occuring? ... maybe high pressure spray using some sort of solution that cuts through flux residue/any other dirt?
This probably is only apperant in controllers where high voltage is run. I don't believe low voltage wouldn't cunduct enough current between the FET legs.
I've done (almost) my best to clean it but this sometimes comes up:
Watching the board closely after powering up, I first see smoke. I cut power, examine.. and find a charred path between the FET legs.
If I don't clean the problem up, it results in blown FETs.
It's as if any residue between the pins becomes a conductive path, and results in a short that blows FETs on that phase.
Has anyone experienced this?
Any cleaning techniques that I can try to eliminate shorts occuring? ... maybe high pressure spray using some sort of solution that cuts through flux residue/any other dirt?
This probably is only apperant in controllers where high voltage is run. I don't believe low voltage wouldn't cunduct enough current between the FET legs.