-Low Sound in A1200

[rkauer]

Non-polarized capacitors leaks, too!

 It is strongly recommended swap the original polarized units for this other type because the original circuit is an alternate current circuit. Common capacitors will last much more than those originally installed.

 Capacitors leakage is less aggressive than battery leakage, but still corrode traces and can "pop" the audio pre-amplifier IC (a small IC near the audio out jacks).

 The capacitors are the 22uF x25V (or more voltage) near the audio jacks.

[rkauer]

Couldn't you replace the electrolytic w/ tantalum ines, which (I think) don't leak

 They don't leak, they flash.

 Taken from Wiki:

Tantalum capacitors possess very low electrical leakage (high leakage resistance), and will retain a charge for a long duration. They are also more tolerant of hot operating environments, unlike standard aluminium electrolytic capacitors. Tantalum capacitors are relatively expensive, particularly the military grades. They are not particularly tolerant of heavy charge and discharge currents, particularly those of a repetitive nature. Their effective series resistance (ESR) is quite high when compared to aluminium electrolytics.
 As with all electrolytic capacitors, correct polarity must be observed otherwise the capacitor will depolarize and the dielectric oxide layer will be reduced back to the metal, reducing the resistance of the device and causing it to become very hot and possibly explode. Tantalum capacitors are less prone to "drying out", causing a decrease in capacitance as is often the case with aluminium electrolytic capacitors particularly when used in hot environments. They maintain their designed capacitance under such conditions over long periods (decades).

[rkauer]

That's a discussion which may solve your problems: let's change those capacitors!