So I finished building two Crack with Speedball kits a few days ago. I turned it on to check the voltages, then two of the 2.49Kohm resistors on the headphone jack overheated and smoke appeared. I quickly turned it off after that. I tried it on the second kit I built and the same thing happened.
I ran through the kits again to see if I had any bad solder joints. In the first kit I didn't solder the unbanded side of a 100uF 160V properly to 9U. On the second kit I didn't find any problems, but resoldered all the 100uF 160V joints just to make sure.
What tests should I perform before retrying the 2.49Kohm? I have already taken out the resistors to be replaced with new ones.
Thanks in advance