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I bought denon amplifier PMA 700AE. It was doing well for almost two years. Off late it has started giving trouble, like if my playing input is through tuner , after playing sometime it will automatically switch to other mode like phono or CD , then it keep switching different modes on its own and it becomes very frustrating . I wonder what to do. At time it plays ok. Although my Power input is routed through CVT. Pls. help. I am based in Delhi, India.

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6ya6ya
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Posted on Jan 02, 2017

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Grubhead
  • 5259 Answers

SOURCE: Denon Amp (PMA-700AE) ignores the signal from CD Player DCD-700

If you can follow the circuit from the input of the cd play socket inside the amp itself you might come accross a Memory Retention Capacitor that supplies an IC. If you do. I can't for certain say one will be there, I would replace it, it might be the cause of the lost memory of your device.
If you don't know what a M R C looks like, they are like electrolytic types, but haven the appearance of being squashed. The value will be low only 0.22uf etc and the volts very low say 5.5. The PC board marking will be different to a normal capictor.

Posted on Nov 24, 2009

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marsrover
  • 682 Answers

SOURCE: Problem with the Denon PMA 6.5 amplifier.

bring a good contact cleaner from radio shack near you and apply spray with pipe in the selector and move it forward and backward.

Posted on Dec 02, 2009

dunnbiker
  • 8546 Answers

SOURCE: Denon PMA 700 AE maximum phono input signal

Why? Are you contemplating connection of something OTHER THAN A PHONO CARTRIDGE to it?

Be advised, only a phono cartridge should be connected to a Phono input. There's more going on behind it than just voltage step-up.

Posted on Mar 07, 2010

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