Question about Marantz SR5006
Marantz sr 5006 turns off by itself.
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Posted on Jan 02, 2017
SOURCE: marantz sr 4200
This is an indication of some bad solder connections on one of the boards. It could be the power supply board, amp board, or the digital board. I would like to be more specific, but this is not a common problem with those symptoms. Bad solder connection are a common problem and can cause many different unusual symptoms. Unless you have excellent soldering skills, it would be best to let a service center repair this for you. This is a very good receiver and is well worth getting fixed. If you have excellent soldering skills and are willing to take a chance on fixing it yourself you could save yourself some money, but be aware that if you make even one mistake while soldering, you could easily cause much more damage than you started with. Some of the components that may need to be resoldered are surface mounted IC's that are very difficult to resolder and if you have never done this before it is not a good idea to start learning how to solder on such a nice receiver.
Let me know if you need any further help.
Posted on Oct 27, 2008
SOURCE: Marantz SR 7200
It is likely that the PA stage has developed an offset voltage in the output stage. The faulty amplifier channel can be found by progressively disconnecting the collectors of the of the power transistors until the protection fault disappears. Once the faulty channel is found the the cause of the offset has to be traced to the faulty transistor or resistor. Don't forget that if you can smell smoke or burning then there are likely to be components(esp transistors) that have been damaged by the fault.
I had a Luxman unit that destroyed 5 transistors in the output stage that was due to an open .5W resistor in the driver stage.
Posted on Mar 29, 2009
my friend has the same problem with an SR 4001. the tech said it was an internal fuse soldered to the board. the display showed an error code that clued in the tech of the problem. I am trying to find the fuse on the board, and trying to get a value(Volts-amps) of the fuse
Posted on Jul 28, 2010
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