It's probably easier to google up the guy who replaced his transistors and got better performance, that are proven to work and work better than the originals.
/Ubbe
ive spent over an hour searching/reading google with all the following key words in various combinations.
BCD436HP/BCD536HP/SDS100/SDS200/Q2/Q3/Transistor/replacement/mod/modification/improvement/hack/overload/no RX/
google usually points me back to radio reference. ive read, probably 20+ threads, probably looked over 100 or more responses.
theres quite a few that people recognize they have lost reception, but no info as to why, some say its also a thing on other uniden scanners.
some recognize the scanner has been damaged by overloading RF, some talk of sending it in for repair and reference the Q2 Q3 were replaced.
scanner.ru is down
my post has the most in-depth commentary to this problem than any other post i could find.
unfortunately, i can't find the post you reference, both in and out of radio reference.