EGO Mower Main Board

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Hi, I hooked up the battery wires incorrectly and fried the motor control unit on my 6mo LM2001E while reassembling.. Has anyone got a used part that could be posted to Australia?
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Dunk O

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Posted 4 months ago

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Jacob, Champion

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Wow. That board looks way different than the one I have. There isn't a huge choke before the motor. Be careful on the one you get. I think customer support should be able to sell you a board. Now that these mowers can be out of warranty. Take a look on EBAY. They appear every once in a while.

Why did you take it apart in the first place? Just curious
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Jacob, Champion

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https://rover.ebay.com/rover/0/0/0?mp...

Found this for 70.00 usd. Look at the pictures to see the differences.
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Dunk O

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Hi
Thanks but I found that eBay one earlier, must be from an older or different model.
How did it happen? I ran over a metal stump. Afterwards there was a vibration so changed to new blade but that didn’t make any difference. Pulled the motor to check for damage, all seemed OK, (no loose magnets or bent shaft). First time I put it back together I think the handle interlock switch was not seated properly so on second reasseambly I apparently had a brain fart and after putting the battery back in I smelt a tiny amount of burning plastic. Made this mistake even though had taken a photo!!! Got pharyngitis so not feeling so well. Must have burnt some part of the circuit board even though no damage visible. My guess is one of the three large transistors probably got smoked. No reason for the manufacturer to design in reverse polarity protection so no idiot protection to save me ☹️.
Making enquiries with Australian distributor regarding new and second hand part availability.
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Jacob, Champion

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Not from an older model. I would guess by looking at it that your electronics are just different cuz manufactured in a different place. Who knows I guess. But good luck
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Dunk O

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I am assuming the fault is with the motor control board. Could the fault be in some other component or circuit.?
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Jacob, Champion

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Do the headlights turn on?
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Jacob, Champion

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What is this? None of the us models have this fuse.

Take the board off. Take shots of each side. Top bottom front left back right .

I want to see everything.
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Dunk O

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The lights don’t work. All interlocks function when tested for continuity. The handle extension interlock switch has no voltage at the motor controller.
Motor start when power added directly.
Can’t find anything burnt even though I did smell burning before I disconnected the battery. Cannot see much in the potted board anyway. Can’t see how the semiconductors would survive the reverse polarity unless the board had protection.
Can send some more photos but can’t at the moment.
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(a)Typical Engineer

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Ego will not likely send out a replacement board, at least in the US.  Their stated policy is to take the mower to a repair center.

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Jacob, Champion

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Still worth a try
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Dunk O

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Got a new part from the Australian distributor. AU$200. Back up and running now.
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szwoopp, Champion

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Thanks for the update and glad to hear you are up and running.
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Jacob, Champion

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AWESOME NEWS MAN!!!! So happy to hear that.
But that's like 160.00 us..... Seems kind of steep.
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Jennifer Hue

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I think my board is fried too. My ego 56v 7.5ah is new but out of warranty since I took it to Jamaica. I was usining and must have ran over some difficult terrain. It just stopped working. We have used a voltage tester and there is current from the battery when the start button is pressed. However the headlights won’t turn on nor the motor start. I decided to pull it apart and this is what I found
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Jennifer Hue

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Just wanted everyone to know when this lawm mower worked it was fantastic. I have the only one on the island and I’m the envy of men who love their toys er I mean tools. The men all tell me they plan to purchase the 56v 7.5ah on their next trip to the USA. The men are anxiously awaiting the outcome to see if I can get a replacement board. So I have to have a fix or I may have to move off the island or I will be the laughing stock because I purchased such a fancy lawn mower that now sits in my garage as more of a museum piece.
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Jacob, Champion

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Keep an eye out on eBay for the whole motor assembly with battery bay and everything. I got one there for 120.00.
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Jacob, Champion

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Fyi that link is for the non self propelled mower. Probably not what you need
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Jennifer Hue

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The link took me to eBay and there was a complete motor available. I’ll keep looking for the specific replacement part thanks

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