Technics SU-Z25

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I have that service manual, but there is no such resistor R451. Instead of resistor R451 there is a jumper, labeled with J. In my amplifier resistor R451 is connected in series with D407 and R405 66Ohm/2W, but in this manual R405 is 82Ohm/2W, so I will put 22-47Ohm.
 
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