Burned DEVO 10 TX Modul

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12 Jun 2015 16:01 #33927 by tuxadmi
Burned DEVO 10 TX Modul was created by tuxadmi
The TX module died.
Without the module the Devo is usable, but with the module it slowly turns off ( 5V breaks down until 2V).



The marked IC (Voltage regulator?) gets very hot before the voltage drops, about 60°C.
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12 Jun 2015 16:11 #33930 by PhracturedBlue
Replied by PhracturedBlue on topic Burned DEVO 10 TX Modul
that isn't the voltage regulator. That is the power-amp, and it can get quite warm I think (it is one of the primary consumers of power on the transmitter)

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12 Jun 2015 16:50 - 12 Jun 2015 17:00 #33932 by tuxadmi
Replied by tuxadmi on topic Burned DEVO 10 TX Modul
Do you have an idea what can cause this voltage drop?
A 15Ohm resistor between 5V and GND works well, no drop.





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Last edit: 12 Jun 2015 17:00 by tuxadmi.

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12 Jun 2015 16:53 #33933 by Cereal_Killer
Replied by Cereal_Killer on topic Burned DEVO 10 TX Modul
Other than "slowly turns off" what exactly is it doing? Does it bind? I wonder if this could of been related to my problem I had a few months back here .

I was able to fix my issue and get it working again by sending 5V directly to the module.

Taranis X9E | DEVO 10 | Devo U7E | Taranis Q7

What I do in real life: rivergoequestrian.com/

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12 Jun 2015 16:59 #33934 by PhracturedBlue
Replied by PhracturedBlue on topic Burned DEVO 10 TX Modul
If the only issue is that the tx takes time to turn off, it is likely that your switch is going bad. The power sequence on the devo radio is somewhat complicated (due to wanting to save settings before power off). If the switch doesn't make a good connection, it can take time for the capacitor to discharge, resulting in a slow power-off.

If you have other issues, then the problem may indeed be elsewhere though.

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12 Jun 2015 17:05 #33936 by tuxadmi
Replied by tuxadmi on topic Burned DEVO 10 TX Modul
Without the module it stays on.
With plugged in module it binds, about 10 seconds later it loose binding and the backlight gets week.
After 20 seconds there is nothing more on the screen.

When the backlight gets week and I disconnect the module all ist good again.

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12 Jun 2015 17:13 #33937 by PhracturedBlue
Replied by PhracturedBlue on topic Burned DEVO 10 TX Modul
yep, it definitely sounds like your module is bad then.

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