rdatelle Posted September 5, 2015 Report Share Posted September 5, 2015 Well I got my new fuses in for my 788 but as soon as I put them in and turn on the saw, they blow. Any ideas what that could be. Might have to take it in to the repair center. Quote Link to comment Share on other sites More sharing options...
dgman Posted September 5, 2015 Report Share Posted September 5, 2015 It looks like it's time to take it in. I have two DeWalt saws, so I always have a saw if something happens to one. Keep a look out on Craig's List. They come up often. It never hurts to have a spare! Quote Link to comment Share on other sites More sharing options...
Jim Finn Posted September 5, 2015 Report Share Posted September 5, 2015 A good friend of mine kept blowing fuses on his DeWalt and he had to replace the motor five times in five years. Last time it failed he tossed it and now uses an old saw that was made in the 80's that has an induction motor. This one will last. He and i both cut 3/4" stock and we have found the DeWalt saw is not up to that kind of use. I got rid of mine after 20 months when it literally fell apart. Great saw for light fretwork though. Quote Link to comment Share on other sites More sharing options...
rdatelle Posted September 5, 2015 Author Report Share Posted September 5, 2015 Yea Jim, I was trying to cut two 1/2 inch pieces of red oak. My mistake. I'll cut one at a time now. I'll take it in Tuesday and see what they say. If it's to much to repair I might just upgrade to an Excalibur. Quote Link to comment Share on other sites More sharing options...
woodduck Posted September 6, 2015 Report Share Posted September 6, 2015 Being an electrician I think you have something serious going on,my bet would be the motor,hope I am wrong for your sake. Quote Link to comment Share on other sites More sharing options...
amazingkevin Posted September 6, 2015 Report Share Posted September 6, 2015 I gave my fist saw (dw788) to my friend .He used it everyday .Then he moved to his brothers and the saw would blow fuses.Ends up the outlet had some kind of problem as he try an extension cord to another outlet and everything is fine???? Quote Link to comment Share on other sites More sharing options...
amazingkevin Posted September 6, 2015 Report Share Posted September 6, 2015 Well I got my new fuses in for my 788 but as soon as I put them in and turn on the saw, they blow. Any ideas what that could be. Might have to take it in to the repair center. What speed were you trying to cut the red oak at ? Quote Link to comment Share on other sites More sharing options...
rdatelle Posted September 6, 2015 Author Report Share Posted September 6, 2015 Kevin, I wasn't going to fast. I was using a #7 blade. I tried backing up to get into a corner, that's when it jammed and stopped. I checked the fuse and it was blown. I put two new one's in but it wouldn't go on so I think it's more than the fuse. Quote Link to comment Share on other sites More sharing options...
rdatelle Posted September 6, 2015 Author Report Share Posted September 6, 2015 Just checked the new fuse I put in and it's not blown, so there's something else going on here. I'll take it in the the De Walt repair center Tuesday. If it's to much to fix then I might just upgrade to an Excalibur. Quote Link to comment Share on other sites More sharing options...
heppnerguy Posted September 6, 2015 Report Share Posted September 6, 2015 i have a difficult time believing that the motors are the problem. I would take the saw apart and check the rest of the inters of it and see if there is a problem with a breakage in there that is causing the motor to strain too hard and low a fuse. Also I would do as Kevin suggested and take the saw to a totally different part of the house that is on a different circuit all together and try it there. perhaps there is a week GFI in the line you are using right now. Just a suggestion. I have had my saw for over ten years and I have never experienced anything like this Dick heppnerguy Quote Link to comment Share on other sites More sharing options...
woodduck Posted September 6, 2015 Report Share Posted September 6, 2015 I agree with Dick ,if the fuse is not blown there is something else going on here. Quote Link to comment Share on other sites More sharing options...
rdatelle Posted September 6, 2015 Author Report Share Posted September 6, 2015 Dick, I did try that on a different outlet and it still didn't go on. I think today I will dig into it a little more and see if I can find something, if not then I'll have to take it in to the repair center. Thanks to all you guys for all your help. Quote Link to comment Share on other sites More sharing options...
rdatelle Posted September 6, 2015 Author Report Share Posted September 6, 2015 Well I still can't figure out what's going on with my saw. It's only 3 years old and I never had a problem with it before. Maybe I'm using it to much. LOL. Well I guess I have no choice now but to have it checked out. Quote Link to comment Share on other sites More sharing options...
ike Posted September 7, 2015 Report Share Posted September 7, 2015 Something is drawing too much amperage. It is probably the motor or ;you have a short in the electric system. You can check the motor by using an ohm meter to a lead and the frame of the motor, you might have to take the saw apart to do this . but Your best bet is take it to the Dealt repair center let them take a look at it, Quote Link to comment Share on other sites More sharing options...
NC Scroller Posted September 7, 2015 Report Share Posted September 7, 2015 Sounds like a bad motor. Happened to me once. There is one more thing to do. On the end of the motor there is a roughly 1/4" hole and if you look in there there is a small slot for a flat blade screw drive. Unplug the saw and using a screw driver turn it back and forth about half a turn. It should turn freely and the blade should move. Plug it back in and try again. I would also check the brushes to see if they are not broken or overly worn. GOOD LUCK and keep us posted. Quote Link to comment Share on other sites More sharing options...
rdatelle Posted September 7, 2015 Author Report Share Posted September 7, 2015 Well I just took my saw apart again but this time I took all the covers off. I checked everything and there's nothing broken or disconnected. The motor moves freely. Still no power to the unit. I hope it's just a switch. I blew out the switch but I can't really take it apart without breaking the plastic. Quote Link to comment Share on other sites More sharing options...
dgman Posted September 7, 2015 Report Share Posted September 7, 2015 Hey Ralph, I just sent you a private message. Travis and LarryEA 2 Quote Link to comment Share on other sites More sharing options...
rdatelle Posted September 7, 2015 Author Report Share Posted September 7, 2015 Well just got off the phone with Dan and we went through a couple of things with the switch to try out but that didn't work either so I guess I have no choice but to take it in to the repair center. Just want to thank Dan again for running me through the switch problem. I'll keep you all posted when I find out what the problem is. Thanks again to all that gave me ideas to try. Travis 1 Quote Link to comment Share on other sites More sharing options...
DWSUDEKUM Posted September 7, 2015 Report Share Posted September 7, 2015 Well I got my new fuses in for my 788 but as soon as I put them in and turn on the saw, they blow. Any ideas what that could be. Might have to take it in to the repair center. The problem most likely is that the brushes have deposited their carbon in an amongst the stator of the motor shorting it out. Replacement of the motor is probably in order... DW Quote Link to comment Share on other sites More sharing options...
Scrappile Posted September 7, 2015 Report Share Posted September 7, 2015 WOW, just checked ereplacementparts.com Motor $282. I did not think they would be that much. That would give me pause. Guess it would depend on what shape the rest of the saw is. Quote Link to comment Share on other sites More sharing options...
rdatelle Posted September 7, 2015 Author Report Share Posted September 7, 2015 Scrappile, I was wondering the same thing. The saw is only 3 years old but I don't want to put a lot of money into it. Hopefully all I need is new brushes. We'll see tomorrow when I bring it in. Quote Link to comment Share on other sites More sharing options...
DWSUDEKUM Posted September 7, 2015 Report Share Posted September 7, 2015 Mine did a simular thing and it was the motor. I used Dewalt's Repair Guaranteed Price and had it repaired and reconditioned. I went through their service center to do that. DW Quote Link to comment Share on other sites More sharing options...
rdatelle Posted September 7, 2015 Author Report Share Posted September 7, 2015 I think I will do the same thing if they offer it where I am. Its a DeWalt service center so I hope they will . Quote Link to comment Share on other sites More sharing options...
kywoodmaster Posted September 8, 2015 Report Share Posted September 8, 2015 Look around for a motor shop. You can probably have it rewound for less that a $100.00. Quote Link to comment Share on other sites More sharing options...
amazingkevin Posted September 8, 2015 Report Share Posted September 8, 2015 I love fixing things! Now a 1.5 amp motor isn't going to smoke when something happens to it because of the low amperage.I pick up fans alot that are brand new folks throw away .What ends up happening is the fan blew over and caused it to over heat before someone could put it right side up again.It took me a while to figure out what was wrong with them as they looked brand new inside.No dust,no burn marks ,no smell so it had to be something easy.Well i dissected the motor carefully and on every fan the black wire had a thermostor connected to it and that was stuffed inside a hole in the motor field winding's which get hot before anything else if there's to much load .I just twisted the thermostor wires together and runs just fine The thremoster is the same size as a 1/4 watt carbon resistor encased in a asbestos or fiberglass woven sock or incased in a black heat shrink plastic.I do the same thing with nice speakers people throw away.Every time the problem is in the weakest point the solder joint.The solder connections coming off the voice coil that are glued on the speaker paper cone is where the break is .just use a razor blade and scrap off the varnish before and after the soldered connection and test with an ohm meter.I've repaired and fixed hundreds of dollar free speakers like this that were in cars with big amps or musical amps.Harbor freight has ohm meters for $5.00 or sometimes free one to a customer .A lot cheaper than a new motor ;)A little detective work and you to will be a highly sought after dw788 repairman! Quote Link to comment Share on other sites More sharing options...
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