Nakamichi PA-7 protection circuit

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rogerbent

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Joined 2006
PA-7 Protect Circuit Upgrade Identification

Andy, If the upgrade has been done, there is a very small 3-leg circuit board attached to the rear of the main board. Two transistors Q241 &I Q242 + R266, R267 & R268 (Right channel part numbers). The L-channel is identical. There are also 3 wires connected to other added components on rear offer main board.
 
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