I have a GF 777Z that has some problems, the left speaker goes in and out & 1 of the tape decks drags,i've looked everywhere for repair shops but i mostly get "WOW we can't mess with that" I know there are probably some shops in nyc or philly that can do it - any suggestions, i'll be going down to south jersey (live in new haven ct)the next 3 weekends, please reply.