4.1 version setup - doesn't power on. Bad controller board?

I’ve tried to scan through the forums to find similar posts, but wanted to ask here to make sure I’m not missing anything.

I bought a Maslow 4.1 back in March and it arrive in late April of this year. I had to move before I got it assembled, and it got put (carefully protected) in storage for couple few months. Recently pulled it out and began working on it with my oldest kid who’s a computer and mechanical engineer. I’m a computer engineer myself with a decent amount of experience working with component level and small circuit / Arduino projects…so not a complete newbie to the need to trouble shoot.

First thing we noticed when we got it all together is that it wouldn’t power on at all. There’s no boot activity, no lights, and no output to inform us of where to look for the issue.
We initially wondered if it might be the pins on the encoder headers per: Solution for disconnect and board wont start problem!

We disassembled the arms and clipped the pins on each encoder…they were indeed a bit long from the factory.

We’ve put it back together again and still get nothing when we try to connect the power cable or to USB. Still no lights, no activity of any kind.

I’m disabled and was hoping to use this for some larger projects to go into a van in the upcoming months that I’ll be presenting later to others for consideration. I’d been hoping to see it work well enough to get a “maker community” started locally … with Maslow as a key component of the shop…maybe order another (if it works as hoped), so would really like to figure out how to get this working enough to play with it to see if it will work for my needs. I have high expectations it will…once I can get the thing to turn on and configure/calibrate properly.

Anyone have any ideas of anything else I should check that might keep the unit from booting….other than the encoder pins issue?
Do I need to just buy another controller board?

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Update…new controller board ordered.
Figured it might be the fastest way to get this resolved, and probably can’t hurt to have backup if it turns out not to be the issue.

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What is your order number? I will refund you for the new board.

If there is no green light on that means the board is not getting power or that like you were testing there is a short circuit somewhere and the power supply is shutting down to protect itself.

The first thing that I would try is to plug the board into the power supply with nothing else plugged into the board. Then I would try a different electrical outlet for the power supply just to be safe

Wow, thank you! Order number is #1234 (a memorable sequence).
We did try powering up the board with nothing plugged in, and also tried a different electrical outlet…one in a completely different location at an outlet we tested the output on before plugging it in. All attempts resulted in no lights of any kind.

I am looking forward to seeing what we get with the new board, and seeing where we end up after that arrives and get’s plugged in. Am looking forward to getting it working and experiencing that first cut…which I understand and expect will be an experiment, learning experience, and probably not quite what’s expected….but will be a marvelous start toward the tweaking required to start tuning the system to the point we can begin playing with designs.

Thank you for the quick response and support!

Can you test the power supply to ensure you are getting output (Voltmeter) with it plugged in and on.