Devo 10 after last surgery doesn't turn off!

I can turn it on but to turn off i need to unplug the battery.

Any suggestion to fix the problem?

This happens after soldering nrf24l01. But it doesn't happens soon. Only after some on -off. Is it a coincidence?

Yes I use a lipo pack from a while.

how to check if the button on off is damaged? I have a multimeter. I see a red yellow and black cable soldered on it.

So the power off circuit is damaged or if I put back a nimh everything will be ok?

EDIT

nimh or not the problem is the same!!
With only the screen connected to the PCB it worked! (screen + 2 modules soldered)
I tried pushing towards the tx the button but it's the same! I don't think the problem is the button.
I hear a strange sound when I try to turn off the TX and it doesn't turn off or like you can see in the video it tries to shutdown but then it turns on.



So to turn it off I need to remove battery. If I will not fix this problem I could survive with this but...can I damage the TX shutting it down unplugging the lipo?

And in this way the changes to the models are written to the memory? And when updating the firmware?

I took the GRN from the CYRF not from the PCB for the nrf24l01. Could be this the problem?

What protocol does this J-BUG on your screen use? Does this behavior depend on the current protocol?

i have devo 8s after install deviation 4.01 not can binding and when return original walker firm same problem, not can turn off.
is fault of firm?

victzh wrote: What protocol does this J-BUG on your screen use? Does this behavior depend on the current protocol?

Dsm2 I tought the same thing. After some test I have to say it doesn't matter!

I'm adding new information hoping someone can debug the problem!

When the Devo 10 is turned OFF (removing battery) and is unused for some time (1 or 2 hours?) when I turn it ON then I can turn it off. I tried this 4-5 times ON-OFF. Then turned ON to fly some lipo with hubsan x4 and some lipo with V922 then OFF doesn't work!

Battery removed, some rest and ON OFF works again!!!


If I turn it ON and OFF more then 10 times then the OFF doesn't work anymore.

I want to add that when I turn it OFF the screen still displays the last information but it's fixed: buttons and sticks movements aren't reported on the screen.

Look like there is still some power in the screen like if there is a capacitor powering the screen that after the TX stays on for some time it charges and the TX screen is powered by the capacitor when I turn it OFF.
Any suggestions???

UPDATE


Since some time my Devo is shutting down reguarly....I have done nothing! A paranormal phenomenon!