Lionel CW-80 - problem

gunrunnerjohn posted:

It should be pretty easy to find most of the components, there's only on LM324, and one transistor.  By tracing from the major parts, you can identify most components.

I have looked at this for a while and do not see any means of varying the output voltage, am I missing something? Also, the title shows "POWERHOUSE 180" not "CW-80", are they the same thing?

The LM324 is a simple op-amp, it doesn't get programmed.a  However!  I posted the wrong diagram!

The programmable part in this picture is the MC68HC908, if that part is bad, you're out of luck.  However, the failures are far more likely to be at the top of the diagram, specifically the BTA24-600CWRG is a likely failure candidate.

Is there a schematic for the later CW80, with the A and B outputs regulated and the U terminals tied together...the build dates that start with a G?

If there is, I don't have it.

I am curious as to what section of the circuitry on the CW 80 controls the “logic” or in this case the ill logic. the transformer puts out full track voltage but even a small light load just shuts down the track voltage and no fuse links blowing out

Check the resistor wire at R8, it's how they sense overloads.  If that is OK, perhaps the LMV358M or the parts around it are the problem.

well this is a different problem I found on my second CW 80 rebuild. the throttle potentiometer socket was not properly soldered into the control circuit board causing a lot of strange problems but fixed now. I agree with others that the quality control built in China is a bad idea