Mighty Mule R4211 Repair Service


If your Mighty Mule R4211 is broken, you’ll want to keep reading. Our repair process is simple and we can help you avoid high replacement costs.

SKU: R4211 Category:


This is a repair service for your defective Mighty Mule R4211 control board. If your FM500/502, FM560/562, FM600/660 gate opener exhibits any of the following conditions, we can help.

-does not work on 18 Vac or solar and the power light is off, but it functions fine with a charged battery connected.

-works fine until the power goes out (charging problem).

-will not turn on at all.

How do I get mine repaired?

Place an order and we’ll send a shipping label to your email within 24 hours (on business days). Carefully package your part and send it.

Fast repair turnaround

A qualified technician will complete the repair within One business day of delivery to us.


This failure is caused by surges and for this reason, we do not offer a warranty. Rest assured, you will save money (this is better than replacing) and we will connect a battery to verify that it is charging before we return it to you.

Additional information

Weight 1.5 lbs
Dimensions 12 × 6 × 6 in

Mighty Mule



Customer Reviews

Based on 5 reviews
Jeff Minzenmayer (Dallas, US)

Great service

MARK HOLLAND (Russellville, US)
Easy and Excellent

The process for submitting order to have my mighty mule board repaired was very easy and the turn around time was very fast and the gate opener works perfectly will use LyraTronics again for this type of repair work. AAA service

rick sandler (Phoenix, US)


Jimmy Hansel (Newton, US)
Two R4211 cards repaired

Website good with pictures. Shipping Easy to do going & coming. Fast repair/ turn around. Prices less than half dealing with Mightymule. MM has changed their design concept, not sure I will ever tr. great experience.

Thank you for taking the time to leave feedback, we do appreciate it!

Chuck Denmark (Lake City, US)
R4211 circuit board.

Timely repair service, unit works great