[ICOM] 775 PSu problem

[Marcus (pa2db)]

Hi, i have a nice 775dsp and sudently with transmitting the PSU blow up. A real heavy BOEM and a internal FET from the PSU (IRFPE50) is exploded. Im wondering is someone have this also and what he have done to solve this. Because is it only a bad FET or was there a reason to blow up. I saw another message with almost the same Question but no answers. With external 12V the mainboard is still working. The PA is not easy to test because the 28V. I hope not of course! Someone experience with this? Marcus pa2db