@merne... For sure you're not an idiot... You have already built one awesome inMoov... If anyone can help you diagnose this Jeremie can. I know this sucks, but like all things you'll get this worked out dude....

What plans do you have for the second inMoov? Anything special build wise?

@Merne , I apologize , I assure you I did not mean my planning / documentation advice to imply anything negative. It is just a " best practice" that could help. If you did document and make schematics then seeing them may help us get to your resolution quicker.

I noticed something different about that battery , is it a 6 volt SLA?

If the battery is only 6 volts it may be dropping below the "low voltage" threshold and browning out , even with a small load.

Merne I feel your pain! Mine just let the Magic smoke out on Friday. It was kinda funny to see smoke coming out of his head. I won't even bother sending mine in due to a couple modifications ie amplifier mod and removing deans power connector and replacing with wire that I made. And yes the unit ran for a couple months after the mods so nothing was done "wrong". I was actually using the robot when it happened , moving around the house. No telltale signs of what burnt on the bottom board but you sure can smell it. Is it possible to order just the bottom half of the ezb4? Either way I will be ordering another one and modify it again. Good luck !

@Josh (good point about the battery)... The SLA could be low... Occam's Razor rules sometimes...

@kamaro, start your own thread , post pics. Also unscrew the four screws from the bottom of the base and it will split apart. There is a small circuit board with a fuse and dean's connection. Remove the ezb.... Check the fuse first with a meter on the continuity setting.

Josh apparently you didn't read my post. Thanks but not asking for assistance, just relaying my experience

Ok bottom half as in the ezb itself not the power base , sorry