Technics sa-gx650

[hpaca509]

I have this technics audio video receiver. I was at the thrift store looking for another receiver as my wife had chucked my previous one(the klh r5100 on other post). I only paid 6.00 for it as it was broken. When i plugged it in at the goodwill it would play any sound. When i came home i tried again. Then once i started pressing the other aux audio buttons it started working again. I've had it for a week and still no problems. Should i be worried it will break again or would it be ok. I listen to it just about everyday.