Burned out transmitter?

[AGImaging]

Hello everyone. I posted this question in another forum but hoping I might get a quicker response here. I need help understanding what happened with my new ImmersionRC 5.8GHz, 600mw transmitter. I think I might have burned it out due to a stupid mistake. I have a DJI Phantom 2 where I previously installed a Boscam TS352 5.8GHz, 500mw transmitter. The Boscam is quite bulky, heavy and saps quite a bit of power from the battery due to a cooling fan that it has attached. I wanted to upgrade to something smaller, lighter, and more efficient. Heard a lot of good stuff about the ImmersionRC, so I went ahead and got one. I thought that the installation would be very simple because the plugs are exactly the same. What I did not notice was that the wires were setup a bit differently. Please see attached photo.

View attachment 18776

Boscam is on the left, the small one on the right is ImmersionRC. Note that the power wires are opposite. On Boscam, red is on left and black on right, while on the ImmersionRC they are reversed. The video wires are also different. On both transmitters, the yellow wire is in same place, in the middle. But, the black wire is in a different area. I did not check the wiring in detail and I simply plugged in the Boscam setup to the ImmersionRC transmitter. When I turned on the FPV monitor and the DJI phantom, I was getting nothing but static. Both are set to same channel 4 but I scanned all channels on the monitor and nothing. Once I noticed my error I connected everything correctly but I'm still getting nothing. What happened? Did I burn out the ImmersionRC due to the connections not being wired correctly?

 

[cootertwo]

Just a guess here, but I think the Immersion has reverse polarity protection. Ain't this stuff a hoot? I played around for 15/20 minutes yesterday, trying to get one of my FPV setups working. Powering the Immersion with 5 volts from a FatShark regulator, plugged into the balance lead. No picture in my goggles, was just working the other day, oh well, maybe something burnt out, maybe this, maybe that, no, I forgot that this one has a 12 volt camera, that does not get power until I plug in the main power! Duh (oldtimers) Ha!

 

[kloner]

you blew a fuse you can solder across, just don't so it again. Sanders at fpvlabs.com is the best source to get him

 

[AGImaging]

Checked this out in more detail last night. Figured out what happened. Blew a tiny, almost microscopic ceramic capacitor (2mm x 1mm, if that). I don't think there is a way to fix this other than replacing the entire circuit board. See attached photo. The ceramic capacitor is located right next to the iOSD Mini wires that plug in to the board. These wires are all bundled together, iOSD, transmitter. See the soot and the blown capacitor? Oh well, we live, we learn. :black_eyed: Ordered a new board, so hopefully it will not be too difficult to replace.

View attachment 18793

 

[cootertwo]

Which board is that pic?

 

[AGImaging]

That's the central circuit board.

 

[josse34]

Hi!
Sorry for unearth!
I have the same problem, how do you solve this problem? Do you know what is this component, i would like to replace it !
Thanks!

 

[JimM]

Before you replace the board, make a VERY careful note of the orientation of the motor output cable (front of the Naza ). I hadn't looked closely enough. the lugs on my connector suggested it connects one way round, in fact it was the other (the lugs are not used to match up with the connector with the naza body).
All motors powered up ok and beeped as expected with no apparent issues (props off of course).
On the flight test in the field, the quad flipped on power up. i reversed the connection and all was well.

 

[josse34]

Thanks but i wan't replace the board, only this component (resistor or capacitor, i don't know) or find another issue.
Bye

 

[JimM]

No problem. The info may be useful to others anyway.

If you successfully replace the component, please do post the details here. I would be interested in knowing more about that component.

I decided to replace the board in case other components on the board were 'stressed' by that component blowing. I'm not an electronics specialist and wouldn't know how to check for that.

I didn't want to risk safety or even greater financial loss for the sake of a £40 replacement board.

 

[Sebastián Macías]

Hi people, i have the same problem, i dont have the possibility to buy another mainboard.

It s possible to get the power directly from the phantom 2 battery?

Thanks