Hi Nakamichi experts,
my Nakamichi SR-4E does not power up.
When switched on there is a steady orange light (which should indicate standby ) and it does not even try to go further.
I have already changed most of the caps on the power supply board and the diodes across the relay coils and Q404 and Q405 (no replacement of zeners yet). There is still no change.
Is it possible to "force" it out of standby? Could it be possible that it would just need an "on" impulse through the remote control (unfortunately not available) or any other switching circuit and if so, how could it be generated?
There is ca. 5.8V at CN-20 and ca. 49V at the rectifier after T2. The relays for all further voltages just do not engage.
Any idea about which other parts or problems could be causing the problem?
The amp was stored for some weeks and was working before.
Thank you so much for any possible help!
my Nakamichi SR-4E does not power up.
When switched on there is a steady orange light (which should indicate standby ) and it does not even try to go further.
I have already changed most of the caps on the power supply board and the diodes across the relay coils and Q404 and Q405 (no replacement of zeners yet). There is still no change.
Is it possible to "force" it out of standby? Could it be possible that it would just need an "on" impulse through the remote control (unfortunately not available) or any other switching circuit and if so, how could it be generated?
There is ca. 5.8V at CN-20 and ca. 49V at the rectifier after T2. The relays for all further voltages just do not engage.
Any idea about which other parts or problems could be causing the problem?
The amp was stored for some weeks and was working before.
Thank you so much for any possible help!