Yeah I am working on a panasonic SA-AK 500 and a panasonic SA-HT67 home theater sound system in my electronics class and i downloaded a manual for the sa-ht67 and it says that is a power supply problem but on the sa-ak 500 we narrowed it down to the removable chip in that has 2 sides and one side is RAM. p.s. wont work on it till next fri day again

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