Milwaukee SDS Drill Repair - model (M18CHPX-0).
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- Опубликовано: 5 сен 2024
- In this video we are taking a look at a Milwaukee SDS Drill model (M18CHPX-0). I bought this from ebay advertised as "for parts or not working" at a cost of £31 + £8 postage.
It looked to be in good cosmetic condition, and appeared to have had little use.
It was missing the chuck, which cost a further £25 and some parts needed replaced which were approx £5.
The drill retails for around £300.
If you put something back together and have a jam jar full if bits left over, then there is a theory that if you take it apart and put it together again enough times, you will then end up with two drills.😊
😂😂😂😂😂
Lol 😂😂😂
And an FM radio!
Milwaukee should just send a link to their repair department to your channel!
😂😂😂Thanks Larry 👍
My experience with Milwaukee drill tells me they're junk
That makes me think. Watching your videos, seeing all the bad FETs you find, makes me wonder what percentage of these that are actually used break. Then I have to wonder, are they worth fixing??
In any case, I have to say, you, and others,are teaching me how to approach problems with little or no documentation.
Love watching your video !
the patience you have digging and digging 👍
Thanks 👍Glad you enjoyed it 🙂
My old CHPX failed after 7 years of abuse, so I bought a new one, that gave up the ghost after 6 months, repaired under warranty. The problem is the driver board, which comes as a spare with the complete motor stator assembly. I wish they did the boards as a separate spare. Or made them so they didn't fail.
Yes, unfortunately a lot of "spares" from Milwaukee come as full assemblies which are often nearly the price of a new tool. I had this with a sander I repaired. The new motor "assembly" as £89 and a new sander £99. I managed to source a compatible motor from Aliexpress for around £9 and repaired it.
If you want to be able to buy every single part for fair amount of money, buy Bosch blue.
Another great video from you! I live in the US and I went to college in Milwaukee, Wisconsin from 1988 to 1992. My Father is a retired electrician and he has older Milwaukee plugged in 120 V (mains AC as you call it in the UK) drills and other tools that still work great. Keep up the good work with your videos!
Thanks SP. I guess we are similar ages. Yes we just call it mains but you probably already know its 240v over here.. Well officially it's 230v to fit in with Europe but regularly where I live it's 250v or higher!
I am a power tool repairer, and by the looks of the grease in that gearbox the tool has done hardly any work whatsoever, so its very strange that the mosfet exploded. Most likely an initial failure the first time the trigger was pulled. I wish I had more electronic knowledge like you because I have several dead brushless electronic assemblies in my workshop. Other than cleaning the switch contacts i usually just have to replace the electronic assembly. This model is definitely not the easiest to reassemble.
I enjoy your videos, please keep them coming.
Thank you👍What makes of tools do you repair? are you in the UK?
@@BuyitFixit No I'm in Australia. I would gladly donate parts to you if I was in the UK, but unfortunately the postage cost from here is very expensive.
I fix all different makes/brands, Milwaukee, Makita, dewalt, hitachi/hikoki, bosch, metabo etc, but the majority of my repairs are usually paslode nail guns.
The only nail gun I've looked at was a Milwaukee. Interesting to know. If I ever come across a paslode you might well get a message 😂😂👍
@@BuyitFixit the paslode guns are gas (butane) fired and the only electronics in them is a resin sealed spark unit that creates the spark and times the cooling fan motor.
Great fix! This looked fiendishly complex but you cracked it. I'm great at taking things apart - it's putting them back together I struggle with 😂😂
We've all been there mate 👍 I've recently finished doing the oil cooler on my Mercedes ML320 as oil was pouring out when it was started up. What a nightmare that was. Had to take half the engine to bits almost!
Great job on that drill.👍👍
Thanks 👍
isn't it supposed to have a low speed when you push the trigger in slightly? It only seems to run on full speed. you have a slider potensiometer in the trigger switch, the one you rinsed off with IPA. are you sure that this potensiometer is working correctly? I always use the fine speed on the beginning of a hole, so i am sure that i hit my markings, and the soft start is very nice to make sure you start the hole in the right posisjon.
Very observant 👍after making the video I used it and thought to myself the same. It turned out inside of the switch are two sets of contacts along side the potentiometer. The first contact is used when it's in low speed and the second kicks in when the switch is fully depressed. It seemed the first contact in the switch had blown when the mosfet shorted, I did manage to clean it up and bend it slightly so it made contact and now it runs at low speed too 🙂
Great fix, thise mosfet's seem to fail on these tools quite a bit😮
Thanks👍 Yes, it seems a common point of failure.
Thank you so much
You're very welcome 👍
Good video bro, i have the 2715-20 (its the same hammer drill), but dont do anything, the light still off when i put the battery.
I would check the trigger switch first to see if its making a connection when pressed. If its brushless like the one I repaired then unfortunately it could be that the main controller is fried, in which case they are usually encased in epoxy resin and even if it isn't you can't seem to easily get the chips and they also need programming with firmware for that tool, so not good news. If it is the main controller then you would probably need a complete motor assembly from Milwaukee, or a controller from another unit.
I noticed when you soldered in the new mosfets, you didn't care that they all 3 were soldered together. I guess you knew with the circuit that it didn't matter?
Yes, the MOSFET's pins are all connected internally inside of the MOSFET (apart from the first pin on the left which is the gate pin).
This is a long shot, but i was wondering if you've come across this before.
I have a milwaukee brushless grinder and one of the phases isnt working and i thought it might one of the mosfits but from what i can see if one mosfit goes they all get taken out.but my grinder is still running😂.
Pull the trigger and it starts to run then cuts out,the hit the trigger again and it gets faster and cuts on more time.then 3rd time is a charm and hits full speed but if you put too much pressure on the blade itll cut out.
Do you think it could be a resister or a strange fault on a mosfit.
Great video btw.👍🏻
Thanks 👍each pair of mosfets drives 1 phase of the motor. It's possible one has failed and caused the symptoms you describe as I've had that before. I'd also check the hall effect sensor that are below where the rotor fits in the motor as I did have one where debris had jammed between the rotor and sensor and damaged one of them.
I received a free defective Milwaukee HD18HX SDS drill that would not work in a vertical position, but in other directions it works and sometimes it won't? I opened the machine (brushed motor) and did not find any bad contacts. or broken wires. I dipped the trigger in liquid (brake cleaning spray) and after that the machine works like new. It is known that the trigger as a mechanical-electrical component is the cause of most failures, but I cannot explain to myself that its position (horizontal-vertical) affected the function? Maybe my experience will help someone with the same failure symptoms to repair their good and expensive machine?
Greetings from Switzerland to all who do not throw away, but repair
Hello! I have the same symptom, except that at home, it's not the mosfet, but one of the hall effect sensors that was torn off by a piece of concrete... could you find the reference of these? On the sensor it says w78d or w79d... thank you for your great tutorial 👌
Thanks 👍I did have a look on smdyooneed.one but counldn't find that code to see what hall effect sensor was used. I know someone else asked similar on another video and ended up getting one from another broken tool as all of the tools (saws, drills etc) have pretty much the same motor setup.
hey, I have the same problem. Shorted MOSFETs. Could you direct me how to find these MOSFETs?
Try searching IRLS3034TRL7PP
I have the milwaukee 2804 hammer drill, it doesn't trigger and the light doesn't work also . The tool feels slightly warm at the base when left connected to the battery.. I don't know what's wrong with it.. Any suggestions?
I've not had much luck with the drills. Most of the electronics are encased in a hard resin compound making it pretty impossible to get into. It could be a shorted MOSFET or blown microcontroller.
what type of lubricent wash used?
I think just normal grease.
This is a fault I've had with high tourqe impact wrenchs a few times. Most of the time it's just 1 mosfet though.
Not looked at an impact driver yet. Got a few more Milwaukee things to repair still. Got a big angle grinder but unfortunately the main controller ic is blown and it's a custom part and programmed.
@@BuyitFixit it's only the big brushless impact wrench I've been able to do that with. The smaller units the mosfets are in the handle section with the controller.
Yeah I have a Milwaukee one-key drill which I bought to have a look at which had all the components encased in the handle too. Looks a nightmare to do anything with and the smaller grinders look similar as well.
@@BuyitFixit only luck I've had with impact wrenchs like that is faulty trigger switches where the carbon strip has burnt or corded off the board and replacing the trigger has fixed it. I'm really enjoying your videos though, keep up the great work.
@@MrTorch8 Thank you Jacob
I have the 2715-20 and it randomly stops while drilling. I have to let go of the Trigger and shake a little for it to work again. Any suggestion?
Hi, I have exactly the same drill with exactly the same problem. I have taken the switch apart and it looks OK. Would you be able to look at it for me as I dont trust myself with soldering mosfets ?
Regards Andrew
Hi Andrew, unfortunately I don't really run a repair shop. This is more of a hobby and to show people how to attempt it themselves. If it's the same type of drill and it's not spinning but the light comes in it is very likely 1 or 2 of the mosfets.
I have a Milwaukee model 2715-20, and it seems like it may have a similar problem except for mine can still run (sort of, sometimes), but many times it does not do anything when I press the trigger, especially when trying to drill into something. So the part you replaced may be on the way out in my drill. How difficult would a similar repair like this be for someone with no soldering experience or experience fixing things like this? Would it be better just to send it in to Milwaukee for repair (they quoted me $250USD) or would it be worth buying the tools and trying to fix myself? Or should I just look into buying another 2715-20 on ebay or something?
Very good question Josh. If it's brushless and doesn't spin sometimes then I think the cause would either be on of the mosfets possibly blown open circuit, or possibly one of the hall effect sensors, although I've not come across that except one that had worn right through due to the armature rubbing against it. It could possibly also be the switch, as there are two sets of contacts inside the switch. As for your skill level at removing / replacing parts I cannot really say. Everyone is different. It depends on how "hands on" you are and confident. You could alternatively order the whole motor assembly perhaps from milwaukee and fit it yourself?
Hopefully this was helpful to you!
@@BuyitFixit Yes, thanks very much. Very helpful. Loved the video too. Seems like you do a lot of these kinds of things!
Glad to help!
NICE VIDEO , I AM PLANING TO BUY A SDS 11/8 MILWAUKEE HAMMER DRILL, ALSO THINKING ABOUT 11/8 MAKITA SDS HAMMER DRILL , WHAT YR OPINION ON THE MATTER, THANKS !!
Good question. I don't have any makita stuff but they are supposed to be good too. I'm pretty much Milwaukee as I've got a fair collection as you might have already seen!
The model I have is a bit older, model 2612-20. It hammers fine but my problem is that there is no rotation whatsoever. It does not matter if it’s under load or not, zero rotation. Any help or ideas are greatly appreciated. I can’t find any videos or forums on this specific tool or issue at all.
Sounds like a problem in the gearbox I'd say. I didn't look to carefully in that section but could it be related to the selector for hammer / rotation / both ?
mines not even 2 years old and has smoke coming out of it when the battery is in. Not impressed at all.
That doesn't sound good at all!
Ahh classic Milwaukee electronics dying.
These have way too many electronical problems for being what they are. This drill has done no work and died already. Defective out of the gate. 300 pounds for that?
They also have an issue where the gearbox lubrication is suboptimal because the chamber is too big and not separated usually professional hammers have two chambers one for the gearset and one for the pneumatic hammer mechanism so the piston is always lubrictated well.
Milwaukee has one chamber and its too big so the grease pools in the bottom and leaves the piston dry.
Also Milwaukee is just horrible to repair, parts are grouped into whole assemblies and too expensive.
Buy a corded Bosch or Makita they last a lifetime and are so easy and cheap to repair.
Interesting. Thanks for sharing 👍
Miljunkee
Google wanted to automatically translate that and said 'A millionaire ' 😂😂😂😂