LoginRegister
Results 1 to 9 of 9
  1. 10-14-2008, 12:33 AM #1
    stevareno
    stevareno is offline
    Forum Regular
    Join Date
    Sep 2008
    Location
    Lawrenceburg, Indiana
    Posts
    46

    Onkyo M504....HELP!!!

    I just got home from work...it's 4 am.....my new Onkyo M504 was delivered while I was away. I open it...it's beautiful....and the first thing I do is plug it in and hit the power button!! The needles pegged to the right at 500 watts......no servo light came on. Mind you I had nothing plugged into the amp yet! Online manual says...NO..NO!! So I turn it off...hook up my p 306 preamp and cd player.....turned on the pre first...then the amp.....needles pegged to far right again...no servo light...no sound.

    Did I do something horribly wrong?
    Reply With Quote Reply With Quote
  2. 10-16-2008, 08:31 AM #2
    Sir Terrence the Terrible
    Sir Terrence the Terrible is offline
    M.P.S.E /AES/SMPTE member Sir Terrence the Terrible's Avatar
    Join Date
    Jul 2002
    Posts
    6,826
    Quote Originally Posted by stevareno
    I just got home from work...it's 4 am.....my new Onkyo M504 was delivered while I was away. I open it...it's beautiful....and the first thing I do is plug it in and hit the power button!! The needles pegged to the right at 500 watts......no servo light came on. Mind you I had nothing plugged into the amp yet! Online manual says...NO..NO!! So I turn it off...hook up my p 306 preamp and cd player.....turned on the pre first...then the amp.....needles pegged to far right again...no servo light...no sound.

    Did I do something horribly wrong?
    Something is shorting in the amp. I would take it to a Onkyo service center and see if they can do something. The amp is a straight forward design that most folks can fix. I have three of these, and there is a shop right in my area where a guy fixes them.
    Sir Terrence

    Titan Reference 3D 1080p projector
    200" SI Black Diamond II screen
    Oppo BDP-103D
    Datastat RS20I audio/video processor 12.4 audio setup
    9 Onkyo M-5099 power amp
    9 Onkyo M-510 power amp
    9 Onkyo M-508 power amp
    6 custom CAL amps for subs
    3 custom 3 way horn DSP hybrid monitors
    18 custom 3 way horn DSP hybrid surround/ceiling speakers
    2 custom 15" sealed FFEC servo subs
    4 custom 15" H-PAS FFEC servo subs
    THX Style Baffle wall
    Reply With Quote Reply With Quote
  3. 10-16-2008, 10:12 AM #3
    stevareno
    stevareno is offline
    Forum Regular
    Join Date
    Sep 2008
    Location
    Lawrenceburg, Indiana
    Posts
    46
    Thank you very much....are parts available for your 508??
    Reply With Quote Reply With Quote
  4. 10-26-2008, 06:44 PM #4
    slowpat
    slowpat is offline
    AR Newbie Registered Member
    Join Date
    Oct 2008
    Posts
    1
    Hi - did you get your M-504 fixed? I read about a similar problem on another forum, and it sounds like the protection circuit has failed.

    http://www.diyaudio.com/forums/showt...387&highlight=

    I am interested to know if you found out what the problem was.
    Reply With Quote Reply With Quote
  5. 11-04-2008, 12:45 AM #5
    stevareno
    stevareno is offline
    Forum Regular
    Join Date
    Sep 2008
    Location
    Lawrenceburg, Indiana
    Posts
    46
    My tech said that a circuit board had cracked during shipping......he resoldered a few things....replaced the meter lights and returned it in 24 hours.....148.00......which I promptly filed a claim against DHL for reimbursement. My tech even gave me a letterhead stating the damage!
    Reply With Quote Reply With Quote
  6. 07-25-2009, 04:38 AM #6
    MacKee
    MacKee is offline
    AR Newbie Registered Member
    Join Date
    Jul 2009
    Posts
    3
    Hi all - I know this is an old thread but I am looking for a M-504 parts source?
    Reply With Quote Reply With Quote
  7. 07-25-2009, 04:48 AM #7
    MacKee
    MacKee is offline
    AR Newbie Registered Member
    Join Date
    Jul 2009
    Posts
    3
    Sir Terrence the Terrible - You have a M-508 running a sub? Man, I hope your house has a concrete foundition

    I have 2 M-504's. I have one running a Klipsch kp-115-sw subwoofer. One channel of the input signal is inverted using a Sonance SM-1 Stereo To Mono Bridging Adapter, simaliar to what a Yamaha C-80/85 will do with the inverted outs. The M-504 meters to not peg the same when the signal is mono. You think the would be equal for both channels.
    Reply With Quote Reply With Quote
  8. 02-23-2012, 03:48 PM #8
    GlassWolf
    GlassWolf is offline
    AR Newbie Registered Member
    Join Date
    Feb 2012
    Posts
    1
    I can't post links, so go to ebay and search on this:

    "Replacement lamp for Onkyo M 504 506RS 508 510 5030 5060 5090 VU meters"

    you'll find the direct replacement lamps for the VU meters. cheers.
    Reply With Quote Reply With Quote
  9. 02-23-2012, 05:36 PM #9
    JohnMichael
    JohnMichael is offline
    Super Moderator Site Moderator JohnMichael's Avatar
    Join Date
    Apr 2005
    Location
    Central Ohio
    Posts
    6,307
    Quote Originally Posted by GlassWolf View Post
    I can't post links, so go to ebay and search on this:

    "Replacement lamp for Onkyo M 504 506RS 508 510 5030 5060 5090 VU meters"

    you'll find the direct replacement lamps for the VU meters. cheers.


    This was a several year old thread so I think the OP has moved on.
    JohnMichael
    Vinyl Rega Planar 2, Incognito rewire, Deepgroove subplatter, ceramic bearing, Michell Technoweight, Rega 24V motor, TTPSU, FunkFirm Achroplat platter, Michael Lim top and bottom braces, 2 Rega feet and one RDC cones. Grado Sonata, Moon 110 LP phono.
    Digital     Sony SCD-XA5400ES SACD/cd SID mat, Marantz SA 8001
    Int. Amp Krell S-300i
    Speaker     Monitor Audio RS6
    Cables     AQ SPKR and AQ XLR and IC
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules