82-70 No 1st or 2nd Ball Light

[Never_to_old]

I have a problem with 6 Chassis,s with no 1st or 2nd ball operation, Have tested all chassis,s with a known good Omega-tec PCB and a test
1st/2nd ball LED Test plug all no go! all other chassis,s (10) Tested out ok

[smurtland]

a few things i have had take out the 1st/2nd ball lights:
1.something fall into the chassis by the heat sink with the three diodes.
2.A bad diode
3.a bad klixon
4.bad pins in the green plug either side

[AMF Brian]

Another possibility to add to the list. Earlier this season I had a chassis (MP), where all my circuits in the chassis for ball lights tested good. After doing research of the chassis schematics, found that it's power source comes from the T1 transformer, I changed the transformer out and regained the masking unit lights.

[smurtland]

test1st/2nd ball LED Test plug all no go!

How did you hook up the test lights?

[Never_to_old]

Made up a test unit using a Elco plug and using 2- 24 volt LED,s..

Common Earth pin 29 to gold spade terminals on LED,s

pin 24 to 1 LED and 25 to the other, onto the silver terminals

pins 2 and 28 wired up to a off/on switch

I tested all the chassis,s and found 6 not working