Sevcon for Service call 1-336-969-0110 at Industrial Electronics Repair

Sevcon Service & Repair Forum

: Our industrial unit, a 10,000 sq ft facility used to manufacture high-pressure hydraulic pumps, has experienced a catastrophic failure in its main control system, rendering it completely unusable. Since the control system is crucial for ensuring safe and efficient operation of the machinery, our production has come to a standstill, resulting in significant financial losses. We have assessed the potential repair costs at a minimum of $50,000, with the possibility of even higher expenses depending on the extent of damage and availability of replacement parts. However, given the critical nature of this unit and its long-term reliance on our manufacturing processes, we are exploring alternative options such as rebuilding the control system or seeking out a pre-existing, similar unit for a quicker solution.:

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— Posted by Ing. Omar Martinez on 2020-10-16

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Sevcon → Sevcon MOS90 631/46002 ↗

If you need your Sevcon unit tested or repaired,
give us a call at 1-336-969-0110.
We offer free estimates and extended warranties on the work performed.
Shipping/Receiving:
Industrial Electronic Repair
145 Rockwell Place Ct
Tobaccoville, NC 27050
Phone: 1-336-969-0110

Recent 130 Comments

#Sevcon by aziz fayek aziz on 2015-07-30 20:20

Hello, I hope you're doing well! I'm working on getting your Sevcon MOS90 631/41063 controller fixed or replaced. Before proceeding, would you please advise if it can be repaired or if a new one needs to be purchased? I'm aiming to check this off my to-do list as soon as possible. Thank you! —> …Purchase or Repair:

#Sevcon by Rodger Jarrett on 2012-01-01 20:53

Can this Sevcon MOS90 631/46002 power supply unit be repaired or bought as a replacement? Just trying to resolve this as part of completing my to-do list.

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#Sevcontrol by KOLLEY on 2013-02-11 06:39

Sevcontrol MOS90 631/40164 seems to be down due to a power supply issue. No power, no lights, and no response from the equipment. Please advise on the possible cause and solution.

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#Sevcon by Soliz on 2013-08-01 07:32

The Sevcon MOS90 631/40277 power supply unit is exhibiting unusual behavior in the warehouse. It is not performing its normal functions and appears to be acting erratic or strange. Further investigation is needed to identify and address the issue with this unit.

—> Purchase or Repair:

#Sevcon by Marcel on 2026-05-13 10:34

Hello,my friends PCB burned out. Can you send me the PCB gerber data and possibly also the bill of materials? I can make a new PCB myself.ThanksMarcel

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#Sevcon by Mauro Aragno on 2007-10-05 00:00

Inquiry about Sevcon 150-14680 REV B Fuse Board Repair or SaleHello,I hope you are doing well. I am reaching out regarding a Sevcon 150-14680 REV B Fuse Board that I was asked to inquire about. Unfortunately, the person who provided me with this information did not give me any details or description…Purchase or Repair:

#Sevcon by Peshak on 2012-05-21 20:58

I urgently need an update on the status of my Sevcon MOS90 631/46002 power supply unit. It is still down. Please respond

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#Sevcon by Kingsley Beck on 2012-04-08 19:47

The Sevcon MOS90 631/46002 power supply component is failing, causing a disruption on the production line. Please address this issue urgently to minimize downtime. Thank you.

—> Purchase or Repair:

#Sevcon by Royal on 2012-04-12 21:31

Could you please confirm if the Sevcon MOS90 631/46002 Power Supply unit is still supported or if replacement parts are available for it? Thank you.

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#Sevcontrol by byers on 2013-10-31 14:12

One of the Sevcontrol MOS90 631/40164 boards just went down. Need to troubleshoot and replace ASAP to get back up and running.

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#Sevcon by Pallo on 2013-01-30 22:47

Sevcon MOS90 631/40277 power supply is now down. Error code 12 appears on the screen. Please advise on the next steps to resolve this issue

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#Sevcon by Swanson on 2013-12-30 16:27

Sevcon MOS90 631/40277 power supply is not providing power to the machine.

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#Sevcontrol by IDONGESIT EKPO on 2013-08-04 19:32

The Sevcontrol MOS90 631/40164 power supply unit is not functioning properly. Maintenance team needs assistance. Thank you.

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#Sevcon by Joel Moorman - Moorman Electric on 2012-08-06 03:24

I need an update on the status of the Sevcon MOS90 631/46002 Power Supply. The unit is still down, and I require a response

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#Sevcon by peter coutts on 2013-02-01 16:53

I apologize for the inconvenience, but there seems to be an issue with the power supply unit of your Sevcon MOS90 631/40277. It's possible that this is causing the machine to stop working as expected. I recommend contacting a technician to diagnose and resolve the problem.

—> Purchase or Repair:

#Sevcon by NGUYEN HUY DINH on 2015-08-01 23:20

Hello, Do you have repair information available for a Sevcon MOS90 631/41063 controller that needs a replacement? It stopped working, and we need a quick solution. Your

—> Purchase or Repair:

#Sevcontrol by Tran Son Mai on 2013-07-17 15:55

Can the Sevcontrol MOS90 631/40164 power supply be repaired or bought? I'm trying to check this off my to-do list.

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#Sevcon by Dan Brock on 2026-06-02 18:02

I have a 4 wheel drive bad boy buggies that i changed from lead acid to lithium and now the machine wont move . I get a code on my sevcon 633T45320 controler that indicates either the motor is bad or the contactors are bad. I ve replaced both and i still gat the code. Wondering if there is a reset t…Purchase or Repair:

#Sevcon by Steve Tate on 2012-03-01 00:29

Seeking repair for Sevcon MOS90 631/46002 power supply unit. Unit is not functioning properly. Need help from a skilled technician to troubleshoot and repair it

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#Sevcon by Nosowicz on 2012-08-19 13:07

Can you please provide more information about the Sevcon MOS90 631/46002 power supply unit so I can check if it is still supported and if replacement parts are available?

—> Purchase or Repair:

#Sevcon by trent atkinson on 2013-04-25 10:14

My Sevcon MOS90 631/40277 unit is not providing power. Need assistance or technician to repair. Thank you.

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#Sevcon by McGeady on 2012-06-28 09:01

I'm following up again regarding the Sevcon MOS90 631/46002 that is still down. Urgent attention is needed. Please provide an update

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#Sevcontrol by Walter Rodriguez on 2013-11-17 05:30

The Sevcontrol MOS90 631/40164 power supply unit is not working.

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#Sevcon by David Simmons on 2013-08-15 01:01

Hey, the Sevcon MOS90 631/40277 power supply unit went down mid-shift. Needs attention ASAP. Thanks!

—> Purchase or Repair:

#Sevcon by JENNIFER SMITH on 2015-08-15 08:20

The Sevcon MOS90 631/41063 controller is displaying error code E5. Equipment not responding, possible issue with control board. Please advise on troubleshooting steps or repair needed. Thank you.

—> Purchase or Repair:

#Sevcon by Ingram on 2012-02-07 00:32

Our Sevcon MOS90 631/46002 unit experienced a power supply issue causing downtime today at 345 PM. Need quick resolution before the next shift starts. Thank you.

—> Purchase or Repair:

#Sevcontrol by it on 2013-08-06 19:32

My Sevcontrol MOS90 631/40164 power supply is malfunctioning and needs repair. Looking for a qualified technician to fix it as soon as possible. Thank you.

—> Purchase or Repair:

#Sevcon by GABON on 2012-06-11 07:05

Hello, our Sevcon MOS90 631/46002 power supply is displaying error code 3F. The equipment is not powering up at all. Kindly advise on troubleshooting steps. Thank you.

—> Purchase or Repair:

#Sevcon by Edgar Rodriguez on 2013-03-16 20:15

My Sevcon MOS90 631/40277 is still down and in need of assistance. Please respond

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#Sevcon by Lloyd Rontti on 2012-08-04 10:24

I am following up on the Sevcon MOS90 631/46002 issue. The unit is still down. Please respond

—> Purchase or Repair:

#Sevcon by Garry S James on 2012-01-22 09:23

We still have not received any response regarding the Sevcon MOS90 631/46002 unit being down. Please provide an update immediately.

—> Purchase or Repair:

#Sevcon by Brill on 2012-11-19 18:03

The Sevcon MOS90 631/46002 is not functioning properly and requires attention from the maintenance team.

—> Purchase or Repair:

#Sevcon by Eugene van As on 2012-01-25 01:29

The Sevcon MOS90 631/46002 is showing error code E231. Power supply failure preventing equipment operation. Urgently need technician assistance to diagnose and resolve issue to minimize downtime.

—> Purchase or Repair:

#Sevcon by mamadou samba on 2012-07-02 16:39

Sevcon MOS90 631/46002 power supply failure on one of the drives or boards. Need immediate attention to prevent downtime.

—> Purchase or Repair:

#Sevcon by MIKALEF on 2012-08-12 20:45

I'm experiencing issues with the Sevcon MOS90 631/46002 model related to the power supply. Something seems to have stopped working, and I'm unsure of the exact problem. Any assistance you could provide would be greatly appreciated.

—> Purchase or Repair:

#Sevcon by Giampiero Di Marco on 2012-04-21 00:09

We experienced downtime due to an issue with the Sevcon MOS90 unit 631/46002, specifically related to the power supply. This occurred during the current shift, and I'm reaching out for further guidance before the next shift starts. Thank you.

—> Purchase or Repair:

#Sevcontrol by Debra Posey on 2013-03-21 23:40

Sevcontrol MOS90 631/40164 power supply is malfunctioning, impacting production.

—> Purchase or Repair:

#Sevcon by SHANE STOCKTON on 2012-02-17 15:52

One of the Sevcon MOS90 631/46002 drives or boards is down, affecting the power supply. Need immediate attention to diagnose and resolve the issue.

—> Purchase or Repair:

#Sevcon by Olimpiu on 2013-02-11 05:39

The Sevcon MOS90 631/40277 power supply unit is not working as reported from the shop.

—> Purchase or Repair:

#Sevcon by Mario Carabelli on 2012-11-01 11:34

Hello, I'm inquiring about part number Sevcon MOS90 631/46002, labeled as a power supply. Can you provide more information about this component and the repair process? Thank you.

—> Purchase or Repair:

#Sevcontrol by garces on 2013-08-11 00:35

The Sevcontrol MOS90 631/40164 power supply unit is not functioning as expected. It is exhibiting abnormal behavior that is unfamiliar to me.

—> Purchase or Repair:

#Sevcontrol by hamid on 2013-10-19 23:07

the Sevcontrol MOS90 631/40164 power supply unit went down mid-shift. Please check it out first thing in the morning. Thanks!

—> Purchase or Repair:

#Sevcon by alton on 2012-06-05 22:19

I need an update on the Sevcon MOS90 631/46002 power supply. The unit is still down. Please reply

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#Sevcon by DIEGO SCIUTTO on 2012-12-03 20:43

The Sevcon MOS90 631/46002 unit is not functioning properly and requires maintenance attention.

—> Purchase or Repair:

#Sevcon by SHAIKH MUJJAFAR NAJIR on 2012-07-19 03:59

I'd like to inquire about the pricing and availability of the Sevcon MOS90 631/46002 Power Supply unit. My team recommended I reach out to you regarding this. I am hoping to source one quickly. Thank you!

—> Purchase or Repair:

#Sevcon by Eddie Thomas on 2012-08-12 19:45

We are experiencing power supply issues with the Sevcon MOS90 631/46002, impacting our production line. Urgent repair service is required to rectify the problem and resume normal operations

—> Purchase or Repair:

#Sevcon by GUSTAVO CARRERA on 2014-12-28 00:00

the Sevcon Millipak 633T45312 controller in Unit X went down mid-shift. Need someone to check it out ASAP in the morning. Thanks!

—> Purchase or Repair:

#Sevcon by Mika on 2012-10-20 00:57

The Sevcon MOS90 631/46002 is still down and I need assistance with the power supply. Please provide a response this time.

—> Purchase or Repair:

#Sevcon by BAYSDEN on 2013-07-30 15:32

Is the Sevcon MOS90 631/40277 still supported or are replacement parts available for repair?

—> Purchase or Repair:

#Sevcon by Premanku on 2012-03-24 09:23

I'm having trouble with the Sevcon MOS90 631/46002, specifically related to the power supply. I'm not entirely sure what the issue is, but something seems to have stopped working. Any guidance or support you can provide would be greatly appreciated.

—> Purchase or Repair:

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Industrial Electronic Repair
145 Rockwell Place Ct
Tobaccoville, NC 27050
🚑 Rush repair shipments only — no walk-ins.

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Industrial Electronic Repair
931-E S. Main St #204
Kernersville, NC 27284
📦 Mailing Address (for invoices or shipped repairs)
No walk-ins accepted.