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Author Topic: 1708 no power due to MCU board  (Read 811 times)

Offline APintoZ

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1708 no power due to MCU board
« on: November 19, 2022, 01:14:53 PM »
Hello,

I have a 1708 controller which doesn't power-up when the guide button is pressed. I checked and everything is fine with the button/power board, and when I replace the MCU board with another one it works fine. So, the problem is with the MCU board. Does any of you have a hint on where to start? Thank you!

AP
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Offline RDC

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Re: 1708 no power due to MCU board
« Reply #1 on: November 19, 2022, 03:12:06 PM »
Inject 3.3v into that MCU board on the 3.3v rail and see what gets hot first. If it's a Cap, remove it, then try it with the top board again.
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Screwing up is one of the best learning tools, so long as the only thing you're not learning is how to screw up.

Offline APintoZ

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Re: 1708 no power due to MCU board
« Reply #2 on: November 20, 2022, 05:02:23 AM »
Thank you! I'll look at the schematics and find the 3.3v rail and try!
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