DIY Bosch Table Saw Repair / Replacing the Speed Control

[@christopherw4527]

This video is absolutely useful. My bosch 4100 didn't start one day, so I went out and bought a terrible ridgid last fall. Not near the tool the bosch was. I recently just bought a new switch and it still doesn't come on. I'll tear it down and try to replace the speed control. Thank you so much for putting this video up.

[@camplapidary]

Hi, Christopher. I love my saw as well, just used it yesterday and will be using today. I hope you can get yours running again. Be sure to check all the electrical connections, it's possible to have a loose wire or something..

[@christopherw4527]

@@camplapidary Thanks. It is on the list of things to do. As a builder I've ripped miles and miles of various things through the 4100. Well worth salvaging. Best table saw I've ever had for a contractor jobsite saw.

[@coopersteele]

Thank you so much for making this video. I followed along and was able to replace my control board with zero issues. $45 dollars instead of a whole new saw. Hopefully it will keep running for another 14 years!

[@camplapidary]

That's great news! :D Mine is still working fine. Gonna fire it up tomorrow perhaps.

[@MarkDavidson-l6b]

I have the newer version of this saw: the 4100. What exactly did you do at approximately 6:08 in the video to tilt the motor? I need to access the height adjustment rod and motor slide rods as my blade is frozen in the upright position. I need to disassemble and clean/lubricate the rods. Accessing this area is difficult. Thanks.

[@camplapidary]

It's just the blade tilt mechanism. Hope this helps..

[@RitchT-u5t]

I didn't have the exact same issue but your video really helped! Thank you!

[@camplapidary]

Awesome!

[@j.dacosta331]

The first time I have seen anyone get as far as you did in a Bosch table saw Good man thanks jv

[@camplapidary]

I hope the video helps! Thanks for watching!

[@patriciabock4299]

Now I know I am not the only one who thinks replacing parts is a good fix! Been doing this with my old, very old central heat and air unit. So far the fixes have worked!

[@camplapidary]

New saws of this caliber are $600 easy these days. Prices like that were fine when I was earning money doing jobs with the tools. One or two jobs pays for the tools. As just a homeowner it's really hard to justify buying those tools. I'm glad I was able to repair it. And this video has done really well for this channel. One of my top videos! :D

[@timmyers1006]

I am having an issue where it was hard to start, and today it tried to start once and thats all she wrote. $69. + tax from amazon, $55 + 12.99 shipping + tax from a parts place so Ill order from amazon. Thank you for the instructional video.

[@camplapidary]

Good luck with your repairs!

[@68Mustang390]

A friend of mine and I had the same problem with a table saw just this last weekend. Now we have something to start checking. Thank for your detailed repair.

[@camplapidary]

I wish you luck with the repair! Thanks for watching and the lovely comment. :D

[@Micah6and8]

Appreciate your honesty with mistakes along the way.

[@camplapidary]

Thanks for watching! I appreciate your comment. :)

[@MtPockets14U]

Just happened today on my 4100 that ive had from the day they came out. Never had an issue in all these years. Pretty simple to access with the saw on its end on the stand, with the blade at 45°> pretty simple. Thanks for this video

[@kevinthomson6324]

Have the same saw been trying to get it tuned up and running true again. Didn’t have this issue but have been working my way thru every video I can find on it. Thank you for posting your issue and solution.

[@camplapidary]

Thanks for watching, Kevin. Much appreciated!

[@georgelewisray]

Wonderfully / Incredibly helpful , thank you so much , My old old old Bosch 4000 lives again thanks to you. !!!

[@camplapidary]

Hey now, my saw and I are not that many olds. Are we? lol. But seriously, that's good to hear! :D

[@rjohnson5120]

“Umm, might be time to just go back in and read the internet some more.” Story of my life! Great video, thanks for producing it as I have the same saw and it’s making an odd noise on start up. Very helpful to see your vid before I go into m saw.

[@camplapidary]

Exactly why I made this video. I hope it helps, and good luck!

[@rjohnson5120]

@@camplapidary someone else pointed out that it was helpful to see you go through the diagnosis and what you tried and didn’t work as much as what did. You have talent!

[@camplapidary]

Lol, far too many times simply jiggling a wire has made something come back to life!

[@bernardofernandez6138]

Thank you for the video! My tablesaw started doing the same thing today, I guess is time to replace the speed control, I have own my saw for about 17 years

[@camplapidary]

17 years is a good long time. Did you use it a lot? or just occasionally, like me. Good luck, Bernardo.

[@bernardofernandez6138]

@@camplapidary I used it a lot, I'm not a contractor but I do a lot of small side jobs, I was ripping 2x6 redwood when it went out.

[@camplapidary]

Very interesting. One of the last jobs I did with mine before it went out, involved ripping redwood 2x.

[@IFarmBugs]

Thanks for the video, hoping this replacement part I ordered will get me back in action.

[@camplapidary]

Cheers! And good luck!

[@geoffreyjones7157]

thanks for helping to figure out the problem, now I can fix my saw with the same problem. very well put to geather, thanks a lot.

[@camplapidary]

Good luck, Geoffrey Jones! Thanks for commenting! Always appreciated. :D

[@justinrose6862]

16000 views !!!!!!! Nice work my friend

[@camplapidary]

Thanks! :D My #2 video by views, and perhaps my most useful.

[@JimBenson-i8n]

this seams to be my problem. reverse spinning blade, Thank you for posting this video! gonna go give a try, Ill let you know how it goes!

[@camplapidary]

Very good! Good luck with your project! :D

[@jimrays2896]

Great video my 4000 seems to sound the same way i have to check if its running backwards would never even thought that could happen but so glad you were able to fix yours and maybe its just my age but you are right about those loud vehicles have a nice day!

[@camplapidary]

Thanks! I'm glad others find this video useful. I live on a busy street that used to be a smaller street years ago. Thousands of vehicles go by daily, the vast majority are quiet, so the loud ones are really noticeable.

[@billperry652]

Great video ! I also have a twenty year old Bosch 4000 saw that is experiencing issues . Looking to tackle repair

[@camplapidary]

Good luck! Seems a worthwhile repair. Even a used saw is $350 or so these days. :D

[@Forestmcmac]

Thank you so much! Perfect video for what I need. I hope it's the same thing that's wrong with my saw.

[@camplapidary]

Good luck! And thank you for watching and commenting!

[@ThaiPham-rq5ko]

Thank you for your video. I have the exactly same problem with my Bosch GTS 10XC. As i know, there are 2 type of wires in the stator: heavy load and light load (small wire and bigger one). The speed governor will start 1 state of starting by small wire to give low power to protect the gears. State 2 will cut off the small wire and turn ON the bigger wire for cutting operation. Tomorrow i will fix as you did. I don't need soft start. It is totally weird! It can caused burned small wires in the stator and completly burn down the motor in smoke. Best regard.

[@camplapidary]

Very interesting, Thai. So you are not replacing the speed control board? Just going to bypass it? Thanks for commenting!

[@bobpratt7083]

The new Bosch 4000 speed control switch is not working for me. When I pull up the on/off switch, the blade turns 1/4 revolution and stops. The motor works fine hardwired. I cut a 2 x 6 with the speed control disconnected. I'm thinking that as a retired electrician, I will install a 15 Amp breaker between the hot wire of the motor and the hot wire of the line (on/off switch) just to play it safe.

[@AmaRajiMahaMarai]

Thanks for posting this video, it is helping me address a similar issue.

[@camplapidary]

Welcome! And good luck!

[@glm777]

Thanks for the video! - how about a part number?

[@camplapidary]

2610997306 Bosch speed control 120v. www.mmtoolparts.com/bosch-speed-control-120v-2610997306

[@glm777]

@@camplapidary Thanks so much! Very kind.

[@prestonbaker5190]

My Bosch 40000 saw has the exact same problems. It runs slow and backwards. I ordered the new speed control and installed it just as this video describes but no improvement to my saw. What should I do now?

[@camplapidary]

I don't really know! Are you sure you hooked it all back up correctly? Could the new part be faulty?

[@yuhandyman]

I have the same problem like you. Did you fix your table saw?

[@sello4439]

Thank you so much for the info, I have been struggling so much with my saw losing power and I changed the brushes and nothing happened. So I think this might be the problem. Thank you

[@camplapidary]

Good luck, Sello! I hope you get it working.

[@concretegardensservices3713]

Thanks for the video, same issue with my gts 10j, bypassed the speed control and like yours it temporarily solved the problem. However I am wondering what the long term effects could be.

[@camplapidary]

Hello! Before I purchased the new Speed Control Board, I went to my local repair shop and asked about your very question. One of the techs said that if the Amps are at the correct level there should be no problem not using the Control Board. What are the correct Amps? I don't know.. But good luck with your saw and thanks for watching/commenting!

[@بنعلي-ق2ظ]

Thank you so much for the unique content and sharing us this useful problem solving issue. My problem is I don’t have a background about electrical technical.✌🏼

[@camplapidary]

Thank you for the comment. Most of the electrical in these machines is a mystery to me as well. Just swapping out a part isn't too hard though. Good luck my friend! :D

[@yuhandyman]

I replaced a new 2610997306 speed control board. When i turned on the table saw switch the saw still turned counterclockwise (backward). Please provide some advice. Thank you

[@camplapidary]

Seems like when I was reading up on fixing my saw, the various online conversations I read, there are a couple of things that might cause the blade to go backwards. I cannot remember it all exactly as it has been years since I researched and read those threads. My repair was just the control board, perhaps yours is a field coil. I don't know. I suggest google search and reading all you can find on this subject.

[@natedavidroberts]

Thank you for the great video. Very helpful!

[@camplapidary]

Thanks for the comment! Every comment is helpful to this channel, and I appreciate it!

[@yuhandyman]

How do I by pass the speed control baord?

[@camplapidary]

If I remember correctly I just connected the two wires that went to the control board together. I have no idea if this is a good or bad thing for your saw long term. Good luck!

[@timberwolf007]

Great video, I have the same saw and believe my PC Board (soft start) is on its way out. I'll buy the board instead of ordering a new motor from Bosch. Thanks!

[@camplapidary]

Good luck, Chris! Happy Cutting. :D

[@timberwolf007]

@@camplapidary FYI...received my part from Bosch yesterday and installed it. Saw starts and runs like new. No intermittent speed. I was able to squeeze the existing maretts gently with a pair of pliers remove and reuse them using a crimper. From Northern Canada thanks again CL for taking the time to make such a detailed great video. Cheers!

[@camplapidary]

Very good, Sir! Glad to be of use. I went nearly a year without my saw before getting up the gumption to fix it. Hope you didn't have to wait as long. :D

[@lawrenceveinotte]

great video, i picked up one of these saws for free not running, it had a bad bearing i replaced, but it still does not run right, it will start some times and not others, brushes look fine, i'm thinking it's the board, gona bypass it and see, if it is the problem i'm just going to leave it bypassed for now.

[@camplapidary]

It's been a month since this message, did you get it running? I'm no repair tech but I'd check all the wire nutted electrical connections.

[@lawrenceveinotte]

@@camplapidary armature was cooked, so i saved all the good parts and scrapped the rest, i'm watching for another one.

[@stratocaster1greg]

Whats up with newer electric motors? The old stuff just keeps going. The older motors also have oil cups.

[@camplapidary]

Ya know, when it went bad I was trimming just little pieces of wood for my 4x6 trailer. One moment it was fine, and the next cut it wasn't... Old motors with no electronics are reliable beasts, this has soft start and some circuitry in there. Still, it ran for about 20 years before needing repair. I'm just glad the fix worked. I'd hate to have to buy some new saw, especially because I don't really Handyman for Hire anymore.

[@drewjackson722]

I've got the same problem -- thank you sir!

[@camplapidary]

Good luck, Drew! May all of your cuts be safe and straight!

[@Mike-fv7tq]

Hi, what would happen if you permanently hot wired the switch to the motor avoiding the board? Has anyone tried this, does it work, or has it destroyed the motor, or is it OK?

[@camplapidary]

I don't know what would happen long term bypassing the control board. Once I bypassed it momentarily to see the motor work, I decided to get the new control board. Good luck though. Keep us posted if you experiment.

[@jingjinghomeres1553]

my table saw spins faster than normal speed, does anyone experience this?

[@camplapidary]

I have not.. Maybe someone will chime in with a solution for you. I wonder if the speed control board is acting up?

[@chriskeep9461]

that shouldn't have worked, there is no power to the starting circuit on the commuter. that's only giving power to the field.

[@camplapidary]

I have no clue.. Thanks for watching though! :D