Yes even after waiting good time no output.Even if you want for a few seconds?
It could have other problems that we haven't found yet.
After about 10 seconds, what is the DC voltage on all terminals of the LM339?
0.054v pin1
4.81v
0.091v
0.271v
2.471v
5.0v
2.89v pin7
4.0v pin8
5.0v
5.0v
7.56v
0.02v
5.0v
4.81v pin14
There are 2 groups of terminals that are directly connected and you have different voltages for them.
The pins are not matching with the schematic. May be this is different PC number. Mine is 3083-C
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