hello all. I’ll get right to it. I have an older, stock Ibanez BTB 576 and it will drain it’s 18volt power supply almost overnight. It has Bartolini mk2 pickups and the Ibanez bass, mid, treble with volume and tone; no mid shift switch. I have heard of the neutrik output jacks going bad on these things so I purchased a new one just in case it’s as easy as that. $5 shipped. First I would like to test for a voltage draw. Would I test the leads going to the output jack? In doing this would I inadvertently activate the circuit anyway and see a voltage drop no matter what? Basically, how would I find the short? Thank you all for your time in helping a fellow lowender out.