planet audio 400 watt amp?

I have a planet audio 400 watt amp that i have used then stored it for a while and the power comes one when I hooked it back up but not working. I found out somehow the plug connecter for the line input and out put left and right which all 4 plugends are apart off one connecting piece that makes contact with points on the chip board which was not making contact so took the plate off and found the connection points was knocked loose and therefore no connection. I do not know exactly how its post to go back in place. Anyone know?

  i would send it out for repair from a professional if you are not sure-  may save you from more expensive repairs. (4)g5-1244, (4)gtr12, (2)ppipcx2400, (1)pcx4125, (1)pc4800.2, (3) pair mb quart 6.5"Q, (4)optimas, alumapro (1)5 and(1)15 farad cap, premier deh-p860mp, pioneer xm -dual H.O. alternators