Couple things jump out:
#1 Get rid of that DC jack. Use a proper insulated (plastic) jack. Even outside of an enclosure it's possible to cause a short between the barrel of the DC plug (which is +) and the metal casing of the jack.
#2 Ideally, you'd want to have the ICs socketed especially for a case like this. That allows you to remove the ICs and rule out any issue of a current sink on one of them. IOW, it would let you more clearly determine where the issue with the 9v supply in the circuit resides. Since it appears they are soldered directly to the PCB it may make debugging more challenging. At the very least, do step #1 then see what voltage readings you get on pin8 of the TL072. That might help us narrow down the issue
