v2 external chanel not working

[69camaro5speed]

i was dynoing a motor today while warming it up my v2 external a1 voltage chanel quit working. i have tune with it probly 4 or 5 times using my lm1 worked just like my v1 great.looked at the voltage in chanel a1 nothing.so i hooked up a volt meter had voltage. was working for 30 mins or so then quit.so i hooked up my v1 and it works any ideas

[JezzaB]

Does it show a voltage when you use the V2 as a hand scanner and press F4-F4-F4?

[Tordne]

Other A/D channels?

[69camaro5speed]

i never tryed using it as a hand scaner if i get a chance i will.i tryed just switching a1 to a2 pid and it wouldnt except the lm1 o2 ben pid when i did that not sure what i did wrong. guessing it should have showed voltage any way on that chanel.didnt have lot of time to check it out( boss is carb guy so hes saying thats why i hate fuel injection to much electrical shit ) my v1 is working just a pain switching back and forth if i get a chance on my time i will try looking at it as hand scanner

[69camaro5speed]

ok tryed hitting f4 and tryed every external chanel and no voltage showing