Having trouble with your Festool power tool? Well, we're here to help you. Before posting to the forum, give us a chance to diagnose and resolve your issue. In the U.S. and Canada, call us toll-free at 888-337-8600 on Monday-Friday between 8a-5p EST or contact us via email at service@festoolusa.com. For other countries, please visit http://www.festool.com for contact information for your local Festool service department.

Author Topic: Festool ro 150 feq losing power  (Read 863 times)

0 Members and 1 Guest are viewing this topic.

Offline Alfaepoxy

  • Posts: 6
Festool ro 150 feq losing power
« on: June 09, 2021, 03:56 AM »
Machine looses power suddenly, recently they changed brushes and some kind of small magnet that comes inside. It works for a little bit and then it losses power and it doesn't get hot. Plug it cord is damaged and only the upper part is original. What could be the problem?
And i don't have a verified repair shop in my country.

Festool USA does not pre-approve the contents of this website nor endorse the application or use of any Festool product in any way other than in the manner described in the Festool Instruction Manual. To reduce the risk of serious injury and/or damage to your Festool product, always read, understand and follow all warnings and instructions in your Festool product's Instruction Manual. Although Festool strives for accuracy in the website material, the website may contain inaccuracies. Festool makes no representations about the accuracy, reliability, completeness or timeliness of the material on this website or about the results to be obtained from using the website. Festool and its affiliates cannot be responsible for improper postings or your reliance on the website's material. Your use of any material contained on this website is entirely at your own risk. The content contained on this site is provided for informational purposes only and does not constitute professional advice.


Offline Alex

  • Posts: 7553
Re: Festool ro 150 feq losing power
« Reply #1 on: June 09, 2021, 05:45 AM »
First thing I would look at is the Plug-It cord. These break all the time and it looks like you've had your share already. Try a new cord.

Offline scbucc

  • Posts: 31
Re: Festool ro 150 feq losing power
« Reply #2 on: June 09, 2021, 07:19 AM »
Replace the receptor for the plug it cord on the sander.  It’s cheap and easy.  That’s the only problem I’ve encountered with the RO 150.  If there is black residue on the receptor that’s an indicator.   Then replace the plug it cord.
RO 150, TS 75, , BHC 18, RS 2, HL 850, DF 500, KS 120, ETS 150, T15, T12, MFT/3, OF 1400, VS 600, LHS 225, OS 400, DWC 18, BR 10, CT 36, CT 48, BOOM ARM 48, WCR 1000, Shaper ORIGIN, Apollo Precision 5, RISD, NU.

Offline Alfaepoxy

  • Posts: 6
Re: Festool ro 150 feq losing power
« Reply #3 on: June 11, 2021, 05:22 AM »
They called my from repair shop ( I don't trust them), they said the rotor ( not sure it's called the same in English) went off?
What is the possibility of that?

Offline Peter_C

  • Posts: 1119
Re: Festool ro 150 feq losing power
« Reply #4 on: June 11, 2021, 04:39 PM »
Electric rotors often fail. If it doesn't fix the issue then worry about trust. Use a credit card to pay so you can back charge it. Otherwise let them fix the tool and put it back to use.

You could ask them to send you the old parts back with the tool to you. (Good way to verify auto repairs too whether you know what you are looking at or not.)

Offline Alfaepoxy

  • Posts: 6
Re: Festool ro 150 feq losing power
« Reply #5 on: June 13, 2021, 03:43 PM »
These are the pictures or rotor and receptor. Does it look bad?
Tried turning it on without back plastic and rotor sparks a bit? Guessing that's not normal
« Last Edit: June 13, 2021, 03:48 PM by Alfaepoxy »

Offline Peter_C

  • Posts: 1119
Re: Festool ro 150 feq losing power
« Reply #6 on: June 13, 2021, 07:21 PM »
The black part of the commutator/rotor should be level with the copper part when new (Although it may be in that form from the factory). It is well worn and shouldn't be fully black. Some discoloration is normal though. Brushes were probably shot for a long time. Only way to know if it failed otherwise is to ohm it out.

Sparks from the brush are normal.

This would be a more normal wear pattern.

Offline Alfaepoxy

  • Posts: 6
Re: Festool ro 150 feq losing power
« Reply #7 on: June 14, 2021, 03:30 AM »
We replaced the brushes one week before this started happening.
The new rotor would cost me 220 euros, but to repair this one 65 euros.