hitachi 5280 problems

got a hitachi trk 5280 2 days ago.when i first tried it,it powered up but couldnt get the radio on easily,it would come on intermittantly and the volume would be at full force and undefeatable,then after a few seconds just dies away the cassette has new belts on now but no sound (to be fair the head looks had it)basically from power up now theres nothing,except the tape turns and nothing else.....ive tried copious ammounts of switch cleaner in all the areas,but no difference!anyone have any ideas or solutions please?i only bought it cos it was cheap,as ive stopped collecting now,but would love to get it going again

Could be a completely shot volume pot or function switch.

Have you tried headphones maybe jack is corroded

Try running on batteries also. Besides using headphones like Bill mentioned. Could be a bad power supply.

hi guys,ive cleaned everything,including the headphone socket but i have no headphones to test it at the mo the power supply seems good-as the tape turns so power is getting to it ok but i fear it is a worn out volume pot or the function switch has gone-and finding parts for one of these will be difficult to say the least
thanks for all your help so far you guys,its much appreciated

....oh and ive tried batteries and still the same problem so the power supply is definately ok