ColorMeBaddFann
Member
Nearing the end of a Mesmerizer build, and after some transistor swapping (2n5457's out, J201's in) it's sounding as advertised. Volume pot functional, speed and depth are A-OK. However I can't seem to get the 2 color LED to light... I read a few posts mentioning how one side might be brighter than the other, but I'm not even getting that.
Removed the LED and tested with a DMM and can get both red and green sides to light. So it's definitely not burned out. Reflowed the connections and made sure nothing was making unwanted contact, but no dice.
Is there a particular area or component that would be the first place to look? Checked and reflowed around the R16 & R17 1k and R14 & R15 1M resistors, all seems to be clean enough. Or would that be due to the 2n5457's being replaced with the J201's? Didn't get anything apart from a volume boost with the former.
Removed the LED and tested with a DMM and can get both red and green sides to light. So it's definitely not burned out. Reflowed the connections and made sure nothing was making unwanted contact, but no dice.
Is there a particular area or component that would be the first place to look? Checked and reflowed around the R16 & R17 1k and R14 & R15 1M resistors, all seems to be clean enough. Or would that be due to the 2n5457's being replaced with the J201's? Didn't get anything apart from a volume boost with the former.