Mep 805b control panel issues

[jmenende]

Howdy guys.
Ive been chasing a power problem with this 805b. I get no power to the emergency stop, s1 or hour meter. As per the diagram, they are all on the same circuit. The panel lights and cim display power up fine. I just need help tracking power into the control panel and figuring out if the backplane distributes power to the S1 ect after the Cb1 that is good at 25vdc.

Thanks and happy veterans day!

Thanks to all who served and sacrificed.

 

[Scoobyshep]

At a glance I'd say you aren't getting power out of s1 on pin 4. Are you any good at using a meter? Check voltage from pin 3 tonground on s1. Place the switch in run and see if you have voltage from pin 4 to ground if you have it on 3 and not 4 your problem is in s1. No power on 3 it's further back in the circuit

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[jmenende]

Yeah, I checked S1 for power and nothing. My problem is further back the line. Thanks for the suggestion.

 

[Scoobyshep]

Yeah, I checked S1 for power and nothing. My problem is further back the line. Thanks for the suggestion.

Gotta follow that blue line further down on the drawing

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[jmenende]

Looking at the diagram it may be a bad dead crank switch.

 

[jmenende]

So it was a perfect storm. Bad S1 and bad dead crank. Swapped both and runs now. I really hate those blue S1 switches.

 

[Scoobyshep]

So it was a perfect storm. Bad S1 and bad dead crank. Swapped both and runs now. I really hate those blue S1 switches.

Good job

 

[Guyfang]

And they are not getting any better with age.

 

[Scoobyshep]

And they are not getting any better with age.

Nether am I