I have an MC-60 speed controller that I had installed on my band saw and it was working fine. Went to use it and no lights or any response. I removed the controller and have it on my bench with a new speed pot, AC, and light bulb for a load.
I have another one of these on my 9x12 lathe and I repaired it a few years ago but don't recall what I did. But all the LED's were not out on that one.
I've replaced Q4, C5 and LED D11 just "shotgunning" to start with. No good.
I get 1.9 VDC on one side of R1 and about 63 VDC on the other side of R1. And 1.3 VDC at Q4 and the anode of D11.
I've read several posts here on the MC-60 and have the schematic.
Any advice on what to look for or where I should start checking ?
I have another one of these on my 9x12 lathe and I repaired it a few years ago but don't recall what I did. But all the LED's were not out on that one.
I've replaced Q4, C5 and LED D11 just "shotgunning" to start with. No good.
I get 1.9 VDC on one side of R1 and about 63 VDC on the other side of R1. And 1.3 VDC at Q4 and the anode of D11.
I've read several posts here on the MC-60 and have the schematic.
Any advice on what to look for or where I should start checking ?