From: Long Island, NY, USA
Registered: Jun 2003
posted March 14, 2010 10:39 PM
This is one of those multimeter times we were discussing a few weeks back.
If you measure the resistance between the wiper and each leg of the pot currently installed, it will give you a pretty decent idea of the value there now.
Since there can be parallel resistances on the board that will throw your measurement off, you might not get an exact number, but if you see numbers adding up to only a couple of hundred ohms for example, it's not going to be a 50K pot. Same goes for numbers in the hundreds of thousands of ohms and more.
In the tens of thousands....maybe so!
-------------------- All I ask is a wide screen and a projector to light her by...
From: Marietta Georgia USA
Registered: May 2005
posted March 16, 2010 01:27 PM
Here's a chunk of the Elmo ST600D schematic which I believe (forum please correct me if I'm wrong) is the same as the 180D. Shows you the wiring and values for the speed control pots. May help (or not) Rick
posted January 16, 2018 07:17 AM
Hello you 8mm experts! Itís an old thread this one, but maybe you are still there and willing to help me?
Iím trying to do a variable speed modification on a Elmo ST-600. I thought I knew how to do it but found that the circuit of the speed regulation pcb does not match the schematics Iíve found. Now that I found this thread I realize that the version of my MEC-16 pcb is a later one and it looks like some of you might have the correct schematics for this circuit.
Are any of you willing to share this diagram with me?
If you also have a suggestion to how I could do the modification it would be very much appreciated, but I guess I can sort out something if I have the circuit diagram.