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Author Topic: jdm030- option button always pressed  (Read 918 times)

Offline spitaleet

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jdm030- option button always pressed
« on: February 03, 2020, 07:10:16 PM »
Good evening.
The client brought me this control that took rain ...
 The problem identified: option button is always pressed, I tested the button, everything is ok, woks normally and is not shorted.

Is there a component responsible for this button? or does the information go directly to the processor?
Ty for any help!
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Offline RDC

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Re: jdm030- option button always pressed
« Reply #1 on: February 04, 2020, 05:08:02 AM »
It goes directly to the MCU. I haven't tested the actual limit, but it doesn't have to be shorted to register as a button press. If the Tact has some corrosion inside of it or the trace or even BGA connections under the MCU are messed up that could be causing the issue.
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Offline spitaleet

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Re: jdm030- option button always pressed
« Reply #2 on: February 04, 2020, 11:16:30 AM »
Exact!
 Actually, the button does not close short to give the signal, I made the removal and the problem is gone.
 Button changed, everything working, thank you!
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Offline RDC

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Re: jdm030- option button always pressed
« Reply #3 on: February 04, 2020, 12:02:08 PM »
Welcome.
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