No Not that I remember. They never looked dirty. I can replace the power supply...... and retry with new seeds ???
yeah , never give up , practice makes perfect as the saying goes
locate yourself a stronger power supply , shoot for anything over 300mA , ive seen a post where someone used a full 12 volt adaptor with 1 amp , id have to look at my adaptor cause memory is ,,,,, crap i forget where memory is , but mine is somewhere about 5-600 mA and i think its 9 volt
ah hell , gimme a sec ill go look lol ,,, ok mine is a 6 volt , 500 mA , ive made gallons with this adaptor and its still going strong
ok so , you didnt see the wires getting dirty , thats a sign that something wasnt working right , or maybe at all , did you use a volt meter or at least touch/cross the wires to check for spark to be sure the adaptor works ? not that it matters now since you mentioned getting a different one for the next try
dunno what else to say other then im bummed out your first try failed , dont feel bad or lose interest though , its very common to fail in the beginning , practice makes perfect
best of luck with your next try and im looking forward to seeing the thread when you start it
peace
p.s. remember , its possible to get 2 and in some areas 3 harvests a season outdoors with the quicker autos