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Marantz SR7400 AV Surround Receiver wont switch keeps converting to standby and reading check pow5

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  • egnarts Oct 07, 2008

    unfortunately I have tried this and it didn't work

  • egnarts Oct 07, 2008

    unable to switch on Marantz SR7400 AV Surround Sound receiver, keeps going on to standby and reading 'check pow5'

  • egnarts Oct 07, 2008

    No solution as yet, may need to get repairman

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2 Answers

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  • 1,183 Answers

Hi,
I have the same reciver lying with me, and this is chronic problem of this model. What has happened is if you increase the volume on unit quickly and AV IC goes bad. As a work around what i did is , instead of the AUX ports to which my speakers were connected , i connected it using the Tuner ports at the back.
The other thing you can try is that worked for me just once , after which the unit started to go into stand by is
1. Switch of the unit disconnet the speaker cable from the back
2. Make the Volume knob at zero
3. Switch on the receiver, if the unit does not go into standy by, reconnect the speakers
4. Now increase the volume slowly and check

If this fails my friend , you need to get it serviced at repair shop.
Do keep me posted , I was not able to get it repaired in India , coz tere no service tech available for this unit.

Tech & Operational Support hours:
9:00 AM to 5:00 PM ET, M-F
Tel. 201-762-6666
Fax. 201-762-6687 Parts

Thanks
proton

Posted on Oct 07, 2008

  • Mandeep  Singh
    Mandeep Singh Oct 07, 2008

    Alternatively you can also try to reset the unit



    Should the operation or display seem to be abnormal,

    reset the unit with the following procedure.

    The SR7400 is turned on, press and hold the

    SELECT
    and S-DIRECT buttons simultaneously

    for 3 seconds or more.

    Remember that the procedure will reset the

    settings of the function selector, Surround mode,

    delay time, TUNER PRESET etc., to their initial settings





    Thanks

    Proton

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  • Master
  • 1,894 Answers

Try a hard reset

leave the unit unplugged for one night and then switch it ON

Posted on Oct 07, 2008

  • 1 more comment 
  • dewan nafees ahmed Oct 07, 2008

    ok no probs

    It could either be a blown power supply or a board. Perhaps a main board reset will do the trick,
    but make sure you unplug the power before doing doing this. And yes please let us know.




  • dewan nafees ahmed Oct 07, 2008

    assuming this unit is new one

    if this does not solve the problem then t is best thing to call the company and ask for a refund.

  • dewan nafees ahmed Oct 07, 2008

    Main support number (630) 741-0300

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2 Suggested Answers

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SOURCE: Marantz SR7400 AV Surround Receiver

Try resoldering the main bridge rectifier on the power amp circuit board. You will have to remove the board from the heat-sink. The rectifier is mounted off the side of the board and screwed to the back of the heat-sink. Resoldering this usually cures that problem.

Posted on Oct 08, 2008

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