Don't know if this helps, but the SR-63 and SR-82 had this problem resulting
from a small capacitor bad in the power supply area. Can't quite remember
the value - I think it was 2.2 uF. It was a small yellow electrolytic.
It was used to lightly filter a dc line, then this reference was used for
the sharp cut-off function at power-off.
When the machine is turned off, it cuts off the speaker relay quicker this
way. With the bad cap, the protection just stays engaged.

Mark Z.

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"arie8004" wrote in message
om...
Hello!

need help to repair marantz sr-50

pre-on is blinking all the time on the display

no sound al all

power supply is good

power transistors are good

TIA!!!!!!!!!!