Hello,
I have a problem with my Marantz SR 9200. When I switch it on, the inrush current was so great that it initially tripped my house fuse.
After I installed a more powerful circuit breaker, I had a long rest (1-2 years) until the internal fine fuse of the Marantz had blown.
I exchanged it and on the workbench it works fine for about 10-15 switch-ons until the fine fuse has triggered again.
I can't see anything when I screw it on and with the error pattern I don't know what to measure ... Does anyone have an idea?
Many thanks!
I have a problem with my Marantz SR 9200. When I switch it on, the inrush current was so great that it initially tripped my house fuse.
After I installed a more powerful circuit breaker, I had a long rest (1-2 years) until the internal fine fuse of the Marantz had blown.
I exchanged it and on the workbench it works fine for about 10-15 switch-ons until the fine fuse has triggered again.
I can't see anything when I screw it on and with the error pattern I don't know what to measure ... Does anyone have an idea?
Many thanks!
Last edited:
This is a large 4 channel amp. 'small wonder it has developed inrush current issues. There are already comments on the 'net about its intermittent shutdown problems but this isn't related to any specific cause. Have you looked at the troubleshooting guide in the service manual? https://www.manualslib.com/manual/794716/Marantz-Sr9200.html. Otherwise - divide and conquer by monitoring each amplifier's current surge at switch-on. For each amp at least, you have 3 directly comparable ones for reference, which may help in locating a local amplifier problem, as opposed to a general power supply problem.
Last edited:
It is a brute based on what I saw as Ian mentions. I added an NTC power resistor and a relay to first power up my amp thru the resistor before directly connecting the amp to power via a second relay. Complicated, but the lights don't dim anymore when I power it on.
Thanks for your answer. My thought was that something has aged because it seems to be getting worse with the inrush current. Especially if the internal fuse of the Marantz actually responds, some components must be outside their values.
At the beginning I used an inrush current limiter as an intermediate adapter, which does the same thing as your NTC with relay, until I then installed a circuit breaker with C characteristics ...