Spindle motor or controller?

Jim suggests a scope too. Probably can't start looking to barrow one until next week. There are probably a few people with scopes around here but getting the use of one after I find it may be another thing.

But why does it matter what is wrong if there are no parts available? Wouldn't just going straight to designing a new controller that will function with the new motor & drive I already have, along with the existing axis motors & other components, make sense? Especially when those circuit boards in question are known to be troublesome?
 
Groundhog said:
But why does it matter what is wrong if there are no parts available? Wouldn't just going straight to designing a new controller that will function with the new motor & drive I already have, along with the existing axis motors & other components, make sense? Especially when those circuit boards in question are known to be troublesome?
Click to expand...
.

If these PCB's are know to be troublesome, I would bet that there is a common failure. I have fixed enough electronics in my time to know if equipment has a high failure rate the failures are almost always common and usually because a component/s is under rated.

Before you go borrowing a scope, look at the PCB very carefully (use a magnifier) for any tel-tail signs of scorching, this may be as minor as discolouration of the PCB or resistor can. I have seen on many occasions where a transistor looks good but on close inspection there is a small crack in the case. Or you could be lucky and there is a big hole in it.

Then test ALL the transistors, diodes and resistors on the PCB. Can you post a photo of the PCB.
 
You must log in or register to reply here.
Back
Top