Hey all,
Our 1964 10EE died this week. This is a modular drive machine. After spending a couple of hours running tests and sifting through the wiring diagrams Monarch provided for this machine (best money ever spent, buying the manual and schematics from Monarch) I'm stumped.
Here's what I've tried. With the module in and the speed control turned all the way up, the lathe will rotate at perhaps 150 RPM. It's the same forward as reverse. With the reverse speed control full up we get the same speed, 150RPM, just in the opposite direction. This showed up after a couple of hours of heavy machining, but not immediately after -- the next day.
With the module out, we get something like 3000+ RPM (don't like to let it run too long like this, so I don't know where it would have settled out). I checked every component in the module. Diodes, resistors, capacitors all check good and have the correct values.
I've traded out the tubes, to no effect. The fuses are good.
Any suggestion what to try next?
Thanks all.
Our 1964 10EE died this week. This is a modular drive machine. After spending a couple of hours running tests and sifting through the wiring diagrams Monarch provided for this machine (best money ever spent, buying the manual and schematics from Monarch) I'm stumped.
Here's what I've tried. With the module in and the speed control turned all the way up, the lathe will rotate at perhaps 150 RPM. It's the same forward as reverse. With the reverse speed control full up we get the same speed, 150RPM, just in the opposite direction. This showed up after a couple of hours of heavy machining, but not immediately after -- the next day.
With the module out, we get something like 3000+ RPM (don't like to let it run too long like this, so I don't know where it would have settled out). I checked every component in the module. Diodes, resistors, capacitors all check good and have the correct values.
I've traded out the tubes, to no effect. The fuses are good.
Any suggestion what to try next?
Thanks all.