Question about Sony STR-DE597 Receiver
Switch on but it goes on protection mode when it should start playng
I am highly skeptical that the CPU is the problem; protection mode is designed for protection of the amplifiers.
Use an artists brush to remove any dust and grime off the voltage rails and heat sinks. Reinstall the CPU and the chassis cover. Turn your attention to the rear connector panel; check for any broken or loose speaker terminals. If your speaker wires are still connected look for any stray wire strands and pull them off or bend them away from the connector panel. Check the connection for tightness, or simply disconnect any corroded wiring that you may not be using a banana or spade connector with and clip and redress it. Perform the same inspecting and maintaining procedures on all of your speaker channels.
When placing the receiver it must also have adequate air flow around it. Anything you can imagine that would allow the unit to retain heat increases the chance of it getting it into protect mode for thermal protection. Out in open air is best.
When the receiver is properly positioned and all connections are secure, power it up; it will likely still be in protect mode. If so, press and hold the power button down until the unit "clicks" inside the chassis; this takes approximately 15 seconds. Protection circuit is reset and you can now operate the receiver.
Posted on Feb 22, 2012
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Posted on Jan 02, 2017
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