Hello:
I have been a strange problem with may J3 and J4... Not a short circuit because there is no numbers in the input area when I turn on my master card (parallel port). The Output is ok.
My pins in J3 and J4
05-06-08-09 group 1
15-16-18-19 group 2
25-26-28-29 group 3
35-36-38-39 group 4
What it suppose to be ? Where is the problem ? Any IC burned ?
Any idea ?
Thanks
Cesar