Everything started when I took my old RS diode- transistor tester apart for cleaning , actually total wash and replaced the 9V battery too ...
As soon it become active again... I took an LED at hand, to test the functionality , the LED under test started flashing , no matter the polarity ..
This gave me the idea that the LED could possibly light on , also with the on board transistor tester ,
on my DMM ... and it did

, the voltage output are about 3V , so yes it can work out..
Check out the pictures ... emitter and collector.