Aurora is smoking

[paede]

Hi
I made a frsky tx module for the aurora. It was working fine for a few days. Today I wanted to mod the antenna of the frsky module. As I turned on my aurora it began to smoke. I opened it and found a burned part. I guess its a voltage regulator for the transition module.
Does anyone have more info what kind of part that is?
Mabe I try to fix it.
A picture of the board without the burned part would help to.
In this post on another forum is a picture my aurora board.
https://www.rcgroups.com/forums/show...0&postcount=12

TIA
Patrick

[stark]

Here you go. but It's hard to tell what exactly U12 is.

[paede]

Thank you for the picture
The burned part must be the power for the transmitter module.
I powered the module separately and it worked. Signal is working!
How much voltage is the power of the transmitter module? (second and third pin to the left)
Could someone please mesure the voltage?
greets
Patrick

[paede]

https://www.rcgroups.com/forums/show...eed-help/page2
I found someone else with the same problem ...
Thanks for your help!