Yamaha WXC-50 power up failure (red status led blinking)

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Randolf

Member
Joined 2021
Hi,
I have an issue with a Yamaha WXC-50 streaming client / preamplifier. It suddenly stopped providing output via line or toslink output while listening but was still controllable via MusicCast APP. After a few power cycles it finally stopped starting at all, red status LED is blinking 6 times. I checked the Yamaha service manual on hifiengine. The device has a self diagnostic function via browser interface but since it is no longer starting up I cannot use it. I tried the 3 "magic" key combination I am aware of to fix the issue:

  1. Restarting the unit: Press power button for 15 seconds
  2. Reset to factory settings: Press power button to turn unit into standby, press "connect" and "input" button at the same time for 5 seconds.
  3. Firmware Update: Disconnect power cable, connect USB storage, press "connect" while connecting power cable.
Unfortunately, none of it fixed the issue, firmware update seemed to have worked but after the update the same error occured.

According to manual blinking red status LEDs means:

  • 2-8 times blinking: As a safety precaution, the unit has turned itself off.
  • 4-8 times blinking: As a safety precaution, capability to turn on the unit is disabled. Contact your nearest authorized Yamaha dealer or service center to request repair.
I could verify that +15V and +5V voltage is correct, I guess the others voltages are only available if the device is fully started.

Does anyone had a similar problem and was able to fix it? Are there any other "magic" combinations e.g. to enforce a startup of the device (in order to be able to use the self diagnostic function)? Do the blinking times encode specific error conditions?

Best regards
Randolf
 
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