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Blowing LEDs

John Price

Member
May 31, 2020
75
21
8
Tottenham ON
I have a DE Star Trek that I recently upgraded to LEDs. Some of these are not working correctly or are burning out or don't work at all. The problem is not specific to any row or column of the lamp matrix and the transistors check out ok. What's going on?
 

Dave Astill

Active Member
Nov 27, 2012
636
195
43
Collingwood Ontario
are they polarized? cheaper 555 leds have to be inserted in only one position. Also check your switched illumination output voltage and see if its higher than 6.3 volts.