Discussions

*solved* Big trouble...no Power Diode burned out...... I explained how to replace.

Posted by CyberCrash on May 5, 2013 at 3:42am

Hello,

I've been confronted with a big problem.

I am using APM2.5 + the Power sensor board to provide the +5V. 

The output JP is removed to provide seperately power to output (gimbal servos).

I experimented with a new PPM converter which didn't work yesterday. The guy who build it said I shoud check power. I did and found 4,4V on the input line.

Then I saw smoke and now lights are out for the APM2.5.

The power-meassurment-module provides 5,3V!

The APM2.5 is still alive, but only when powered directly by ESC on the Input line.

So is there any fuse on the power supply/meassurement port?

I don't know what to do. I am devestated. I need some ideas. Please.

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –
Follow

Replies

  • Manuel Ribeiro June 13, 2016 at 9:01am

    What's the fuse part number ?

    Thanks

  • John Taylor August 16, 2015 at 7:33pm

    Same problem, different solution.

    I could only arm my APM 2.8 when connected through a USB cable.

    I got ~5v on both sides of the fuse, but only on the bottom (exterior) side of the diode.  top (interior) side was dead.

    I was looking at replacing/bypassing the diode.

    I'd previously used ESC's (yes, multiple) and then a UBEC to power the FC.  When I instead used the power lead from an APM power module, I then got ~5v on both sides of the diode.

    I assembled the works and it all arms/flies fine now.

    Worth a shot...

    Unsure of the explanation, but it proved a relatively simple fix.

This reply was deleted.

Activity