If I understand you correctly the readings you state in your last post do not show a short circuit - by m ohms, do you mean Mega ohms? (It would be unusual for a meter like that to be able to read milliohms).
For an IC junction which does not have a short across it, it is quite feasible to get a reading of 1.34M in one direction and >20M in the other direction.
We've been proceeding so far on the understanding that you appeared to have a zero-ohm (or near zero ohm short) between pins 7 and 8 of UG5.
Your readings in #85, are those the readings, in Mega ohms, that you have been getting between those pins all along? It's a bit confusing when we read this, when you seem to be quoting the resistance in ohms elsewhere:-
Quote:
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All readings for resistance from Black UG5 pin7 are between 0.001-0.003 Ohms
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.