806B Acting really weird.

[Guyfang]

Sure hate to say it, but once the RESET switch is thrown, that PWR LED on the ESD Is supposed to lite. Either an input to the I/O is not there or the I/O is bad. Do you have a known good gen set to swap out the I&O, just for a test?

 

[UnderhoodGSE]

Sure hate to say it, but once the RESET switch is thrown, that PWR LED on the ESD Is supposed to lite. Either an input to the I/O is not there or the I/O is bad. Do you have a known good gen set to swap out the I&O, just for a test?

The I/O is the board directly behind the screen right? If so we did install a new one and the one we took out of it put in a different one and works fine.
We also installed a new circuit transformer.

Just a recap of issue
-no voltage displayed on phase A.
-no frequency displayed.
-actual voltage and frequency is correct when tested with multimeter at contactor.
-cantactor won't close (because volts/hZ not displaying I think?)
-Gen led on the load sharing (A2 board) is no turning on while it's running.

I'm starting to think it's the backpane itself...

 

[Guyfang]

The backplane would be my next step. Look at the backplane anyway. Look for cracks, in the middle, top of the board.

Thats the problem with the B-Models. There is no real testing. You change things till it works. Thats why all units had at least two of everything hidden in footlockers, and there was a massive shortage of said parts the entire time these sets have been in use. Only now, when they are getting rid of some, has the supply problem started to "get better".

 

[UnderhoodGSE]

Well I found out I'm an idiot, I guess those little wires on top of the main wires on the contactor is what let's the systems know what the voltage is... See attached picture. The wires were rubbing the air cleaner and actually cut that wire. Gonna get the wire fixed tomorrow and we should be good.

 

[Guyfang]

No. Not an Idiot. Just had not got far enough along in the troubleshooting process. Happens all the time. BUT, your assuming that will fix it. Fix the the wires and then test. Then you KNOW.

 

[UnderhoodGSE]

True true. I literally have had no experience in these generators till this deployment. Let me tell you what though, definitely learned a lot messing around with this one.

 

[Guyfang]

Not giving up, is a sure sign of a good generator mechanic!