DW 788 issues

[NC Scroller]

I am blessed to own several scroll saws.  The other week my favorite Dw788 blew the fuse.  Put in a new fuse and the same results.  Tried a slightly big fuse and pop.  I am a kinda handy guy but not an electrical engineer.  I can ready a meter.  I need help determining the issues.  I am guessing it is the motor or the circuit board. Any one have suggestions on how and what to test.  

 

For the record I got this Model 1 in a yard sale 5 years ago.  It had never been used and i paid $125.  The saw now has lot of hours so it really does not own me anything but stll I really like how it cuts. 

[amazingkevin]

Look at  the motor brushes first.

[ike]

I agree with Kevin , if they are ok take a volt meter set it on residence  hold one cord to a wire of the motor and tthe other to the motor frame this will test the motor for a short, which is usually the problems with the motor.. you should get no reading on the ohm meter.

[heppnerguy]

Could maybe have a wire that is not fastened well or has come out of a holder keeping it in place and caused the wire to rub against a moving part and could have worn away a part of insulation on the wire causing it to short out. Just another idea to look for. A meter wil show if there is a short in any specific wire. Good luck

 

Dick

Heppnerguy