brought home "the one that got away" yesterday.

[ANGRY GARY]

i got thinking about your statement in the previous post. the more i think about it the more i am leaning towards a leaky diode than residual current. an old diode will "leak" current in the opposite direction and thus apply small amounts of voltage upstream of the circuit point where it is located. obviously not enough current to affect the operation of the circuit, but enough to make an LED glow. could this have possibly been the culprit?

[emmadog]

i got thinking about your statement in the previous post. the more i think about it the more i am leaning towards a leaky diode than residual current. an old diode will "leak" current in the opposite direction and thus apply small amounts of voltage upstream of the circuit point where it is located. obviously not enough current to affect the operation of the circuit, but enough to make an LED glow. could this have possibly been the culprit?

it definitely could be but I do know that current in some applications was intentional for the reason stated above. I just don't know enough about electronics to make an informed assessment. my LEDs do have a diode on them but I don't know their exact function and your idea sounds as plausible as any especially considering the age of the components.