Question about Marantz Audio & Video Receivers

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When playing a CD using my Marantz Integrated Amplifier PM4200, the 'mute' light flashes and obviously no sound comes out. This is now happening with about 75% of my CDs. There appears to be no way to stop this happening as there is no actual mute button on the amplifier. There is a mute button on the remote, but this has no effect whatsoever on the problem. What to do, please?

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6 Suggested Answers

robotek
  • 1512 Answers

SOURCE: My Marantz PM-45 integrated amplifier

Hi HouseofBlues

The problem you are facing is the speaker protection is turning on to prevent the amplifier from damaging your speakers. It will need some service work done to it to prevent it from happening. I suggest you get it attended to sooner than later, as the problem will be caused by dry solder joints that will need to resoldered, or a semicinductor that is failing. If you are a gun with a soldering iron, you could do this yourself. Check about parts of the amp that runs hot, particularly transistors and resistors in the output stages. resolder all output transistors, and any parts that are mounted to a heatsink. Also focus on areas of the PCB that has discoloured. This is often where the problems occur.
I am more than happy to answer any other questions you may have about it, just give me a hoy :)
Thanks for using FixYa, If you consider the advice I have given you as sound, a FixYa rating is a great reward for my efforts to help you. Cheers.

regards
robotek

Posted on Jun 02, 2008

  • 1 Answer

SOURCE: my marantz sr19ex amplifier has

I am working on one right now, it has blown output transistors and several upstream transistors and burned resistors as well. This channel of the amp will need a rebuild.

Use a volt meter and, with black lead on the chassis, check the voltages at the 3 conductor connectors going to the board at the rear speaker terminals. These are the outputs coming from the amp and if there is voltage on any of these (unit at idle, no volume), the protection circuit will keep the output from getting to the speakers. High voltage here means blown amp, most likely.

feel free to contact me regarding the repair... www.irebuildmarantz.com

Posted on Nov 08, 2008

Xtremeroofin
  • 67 Answers

SOURCE: My Marantz PM-66SE amplifier will

Check the fuse

Posted on Dec 19, 2008

  • 21 Answers

SOURCE: sansui au-G90x integrated amplifier connetcted

Dirth control switches and/or dirty/corroded/worn-out speaker relay.

Posted on Sep 03, 2009

jomabug76
  • 1146 Answers

SOURCE: my sansui integrated amplifier model

check ebay,,and sansui website

Posted on Nov 03, 2010

dunnbiker
  • 8546 Answers

SOURCE: The model number is Kenwood

The manual with 'specs' is here. Take them with a grain of salt because it's impossible to produce more audio watts than are consumed electrically (250 total).

http://www.retrevo.com/s/Kenwood-KA-894-Amps-review-manual/id/479ag211/t/1-2/

Posted on Dec 26, 2010

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