Entertainment Center: TVs, Stereos, VCRs and DVDs - blown speaker fuses ???

Hiya all ... got a JVC "boom box" (whatever you call them) portable stereo etc ... anyways, found in garbage. Nice unit well built, very heavy for size (high quality?) .. works except that sound from speakers is very low, clear, but low. I assume this is why whomever threw it in garbage.
Am i right, or close in thinking that there may just be some speaker fuses blown?
thnx ..

More than likely the main amp has blown or most likely has some bad solder joints on the amp. What you are hearing is the pre amplifier section working. So what I would do is use a 40 watt soldering iron and 60/40 solder, both available from radio shack. Get what you want to solder hot first then apply the solder. Learn how on a junk piece of equipment. Locate the amplifier, large black probably 1/4 thick, 3 inches wide screwed to a large aluminum block (heat sink) Take the unit apart to the point you can access the pins of the amp. This can be the hardest part of it all! BE CAREFULL, watch what you do, lay the screws etc out in a pattern or on a piece of paper marked with where they came out. Wrong screw in the wrong place may cause problems later. Carefully re-solder each pin, watch for splash so no two pins connect to each other. Search around the board for other questionable solder joints. Some will be obviously cracked, others may be milky in color. Re-solder anything that looks bad. Plug it in and see what happens. If sound levels still do not come up I would pretty much say the amp is blown. By the way plug in a set of head phones and see if you have audio. If you do then that qualifies what I am wanting you to do. Now if the sound doesn't return you can find replacement amps from Tritronics.com about $45. That's cheap to find out if that is the problem, that unit probably retailed for $400 +- . I don't like just arbitrarily changing parts but having repaired MANY of these units I will bet on the amp. If not I would have to see it to track down the problem. By the way since you do have sound the likelihood of the fuses being blown are nil...

Thnx for the reply ... i am sorta familiar with what you are saying from just taking things apart over the years. Never new what all the parts did/do ...

I'll have a look at the amp, as you suggest ...
I forgot to think of the headphone plug ...
Re. blown fuses = no sound at all ??