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Author Topic: Yamaha A-S500 Power problem  (Read 775 times)

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Offline AjuztamTopic starter

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  • Country: pl
Yamaha A-S500 Power problem
« on: December 17, 2023, 09:57:55 pm »
Hi. I have a Yamaha A-s500 amp with a powering problem. When I turn it on a CD Input and Pure direct lights come on for a second and then go off and power led flashes constantly. Anyone familiar with such problem? Thanks
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Offline m k

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  • Posts: 2549
  • Country: fi
Re: Yamaha A-S500 Power problem
« Reply #1 on: December 21, 2023, 06:20:29 am »
Something is overloading and protection is activated.
You must start measuring.
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(plus lesser brands from the work shop of the world)
 

Offline RFDx

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  • Posts: 178
  • Country: de
Re: Yamaha A-S500 Power problem
« Reply #2 on: December 21, 2023, 10:45:33 am »
The amplifier has a self diagnostic function where the flashing of the power LED tells you what the problem (power supply, abnormal current or voltage in the power amp, high temperature etc.). The service manual has all the
 necessary details.
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