You're very welcome.
It was not my intention to sound patronising but the naivete of the statement "My volume is low can I fix it with a spray?" is literally mind boggling to anyone in the tech industry.
First of all if it's still under warranty you NEVER open it up yourself.
If it's out of warranty and you open it up more often than not neophytes end up unable to put it properly back together again.
And believe me, if there's anything visually fried inside, it takes at least a modicum of soldering experience to be able successfully identify and replace a fried component and chances are if something fried it took out a few other components with it.
And finally without proper test gear 99% of electronic problems are simply unfixable. A multimeter and a screwdriver will only take you so far with most problems and amateurs tend to f*** things up more often than not when they attempt an uninformed repair.
I'm not belittling you, but I am just responding to the facts as you presented them
Gary