In opening , I've been periodically reading for years , made an account a little while back , and this is my first post . Today I was working in a different than usual location , that happened to be near a Guitar Center . As my habit I checked the online inventory for potentially interesting used items . Spotted a Blue Stripe Peavey Express 112 . Having only passing familiarity with the Peavy product line , initial searching showed the Blue Stripes were well like, and had old school spring reverb . So far so good . Raced over on lunch hour , after confirming on the phone . Fair appearance , but functional was supposedly confirmed . But in person , nothing happens with either Input jack ( which seemed really loose to my inexperienced self ) . But did work with guitar input plugged into the Effects Loop return. I thought evil profane thoughts about GC , but ended up making lowball offer, and it followed me home . I thought worst case scenario , I got it at price I'd be willing to turn it into a defacto speaker cab . Could it realistically be a matter of bad jacks , or bad wiring between jack and preamp ? Since I am primarily interested in clean , with a bit of reverb ( think lap steel) , is it viable to just plug into the Return jack ? If the problem isn't the jack and initial wire , is there a common problem that would do this , or should I expect a full diagnostic required . My plan is for my daughter to take it into her part time job at local independent music store , to get a quick & dirty opinion of either : 1. Jack problem 2. Anthing more complex . But I thought I would also check for any wisdom from the group here .