Grinder will not start

[monts]

Are there no other terminals that put out 100 V DC? I must have damaged something but I do not know how. Is there a way to check those large white resistors? In test mode, with the number 3 button pressed, should JP2 read 100 V?

 

[ksb]

See the picture from "advocat" at post #3 - there 2 big white resistors - one smaller 1,5 Ohm (left side)

and one bigger 4,7 Ohm (right side).

Maybe the value is different because your machine is operated with 120VAC.

Is it possible to attach an image of your pcb-boards?

 

[monts]

The large resistor measured 6.0. I could not access the smaller resistor without removing the panel. Should I remove the panel? I can attach a few pictures but the board looks like all the others.

 

[ksb]

If you remove the boards there may a be more problems than before.......

It is possible to bypass one or both of the triacs for the grinder but if you make a little mistake the board is damaged....

 

[monts]

I did remove the front panel and measured the small resistor at 4.6. I am pretty sure the grinder motor is still operational. Should JP2 show 100 V in test mode with S3 button pushed?

 

[ksb]

yes - if you push "S3" there must be about 100V DC

 

[ksb]

It is late now and so i am offline until tomorow evening.

Good luck!

 

[monts]

Well, apparently the act of removing the board and placing it back fixed it. Something is loose. I will continue to investigate, but at least now I see some daylight!

 

[monts]

Thanks again so much for keeping up with (or putting up) with me!