Hi Dann. Could possibly be the on/ off switch. Should check the brushes as well. Then yep, the softstart/speed control module would be next on my list to check, Don't know how comfortable you are with electronics, but the electrolytic caps on the pc board would be a good place to start. Otherwise probably just change the module. Kind of expensive ..

Controller Circuit 100V - 127V [301-819] - $110.48 at eReplacementParts.com

 

Dann, did you try spinning the shaft by hand a couple times?

 

This may sound stupid--but did you try plugging something else into the outlet to see if you had power?? No breaker tripped in your panel???

earl

 

If it was working well when you last used it then the electronic parts should be okay. I would look towards brushes or corrosion on the switch contacts. Putting a jumper wire across the switch would eliminate that problem. You might try You tube for some ideas too. There are a lot of tutorials on there about problems like that.

 

If it was working well when you last used it then the electronic parts should be okay.

Not really... capacitors are as likely or more so to dry out if not charged periodically. As an electronic tech for 35 years, I have seen many, many devices not work after years of storage. If they are near failing, even a few weeks(days even) of storage can do them in!

 

Thanks for all the suggestions. Before I tried to start it, I cleaned it out with air. I checked the brushes, all look clean. I put in a bit and the shaft was spinning. Oh, and I had another machine plugged into the same socket. It was working. The switch is looking like a good candidate too. Thanks for the link to a new start controller circuit. I'll do some more checking, and take a good look at the switch.

Thanks again.

Dann

 

Just tested the M12V with an ohmmeter. When the switch is moved to the on position, the meter gives a reading of approximately 100 ohms. I don't have any schematics for the controller, but perhaps someone can tell me if that means the switch is working and the controller isn't or vice-versa?

Thanks.

Dann

 

Are you measuring across the power cord plug? If so, that's probably about right.. you reading the resistance thru the Speed/softstart module. If this is the case, I would say the speed control is the most likely problem. Although an open field, armature, or brush could still be the issue.

If you are measuring across the switch itself.. you should see very near 0 ohms on the lowest ohm range your meter has. If this measures 100 Ohm, the switch is bad!

Good luck!

 

Congrats on the new router!! Now that you have it, and you have nothing to lose...pull the module on the old one and see if you can find the problem. I had a variable speed Delta planer that had the control module go bad, turned out to be one leg on one component that had to be re-soldered. In the process (i'm not an electronics guy!!) i broke a leg on a temperature switch. Was able to source it for $3 and replace. Good like new and i learned a lot. It did help that one of my clients owns a shop that rebuilds controller boards so i had "phone a friend" to help, but i only had to call him twice--once was to report back and say thanks!!

earl

 

Hello, I have exactly the same problem with my M12v, I aquirred another speed controller which I was assured was ok. I fitted it, and in anticipation turned her on. Result---- nothing, dead as a dodo. Checked brushes, lead and fuse. All ok, the controller has 3 wires coming out of it. Does anybody know how to test this please?
Many thanks Becks

 

Well, you can bypass the speed control. If the router runs, the control is bad, period. If that is not something you are comfortable with, may be best to take it to a repair shop. If the controller has set for a couple of years, even though it may have been good then, doesn't mean it still is! Capacitors can and do dry out from lack of use. If you are comfortable with electronic repair, the caps would be where I would start.

 

If it is the speed controller it is simple enough to by pass it and buy a router speed control from Harbor Freight for about $15 dollars.

 

Thanks for your replies, I will look into the external controller.

 

Congrats on the new router

 

the new router has arrived

A few days ago, I finally took delivery of the new M12Ve. It looks good. As soon as I could get to it, I put it in my table and adjusted on the jointing fence. Works great. The start is smooth and clean. Next project is to cut some dadoes and mortises in a set of bookshelves I'm building. Can't wait because using it is fun.

 

And it is a good value for the $194 price tag in the US.

 

I just fixed my M12V - the power switch just need cleaning

My Hitachi M12V have been left unused for some time and yesterday wouldn't start.

I just removed the power switch cleaned off the dust and tested. It's a double pole double throw switch and only one side is working.
Opened up the switch cleaned contacts with a fiber glass brush and removed some hardened grease at the pivot. Reassembled and my M12V works like new.

Spares are still available in Australia at Tool Spare Parts
New switch cost AUD$50
New Variable speed controller cost AUD$125
(New Hitachi M12VE cost about AUD$525)

But I have just spent $0.

Hope this post will help some others.

 

My Hitachi M12V have been left unused for some time and yesterday wouldn't start.

I just removed the power switch cleaned off the dust and tested. It's a double pole double throw switch and only one side is working.
Opened up the switch cleaned contacts with a fiber glass brush and removed some hardened grease at the pivot. Reassembled and my M12V works like new.

Spares are still available in Australia at Tool Spare Parts
New switch cost AUD$50
New Variable speed controller cost AUD$125
(New Hitachi M12VE cost about AUD$525)

But I have just spent $0.

Hope this post will help some others.

UPDATE
My M12V variable speed controller finally really failed. I had to order the spare CONTROLLER CIRCUIT 220V-240V. Unfortunately price has gone up to AUD$173 inclusive of TAX and freight. Lucky I can still get it and my M12V is working perfectly again.

 

Reuel

Thank you for the information.

 

!!!....you could almost buy a new router for that.

 

Not in Australia,Danny Boy, not in Australia......LOL.:wink:

 

?!...Wait...aren't you closer to China/Japan than we are?