Question about Korg Pa800 Synthesizer
The headphones typically use a seperate driver than the speakers.
I don't have a PA800 schematic, but the PA500 uses a power chip part number TPA3100D2 which drives the speakers. ( That is all it really does other than mute the speakers)
IF you open your unit and find a chip with this number on it, it MAY have a problem on one of the two channels. The chip has 48 leads, and would be about 3/4 inches square. It is a dual 10 Watt switching type audio amp. Cool it with circuit cooler spray and if that changes the hiss on the channel, the chip is likely bad.
Unless you are very skilled at working with surface mounted components, you should take this for repair as special tools are required to replace it if this part is bad.
Posted on Sep 16, 2010
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Posted on Jan 02, 2017
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