Results 1 to 11 of 11
  1. #1
    AR Newbie Registered Member
    Join Date
    Mar 2010
    Posts
    4

    Help, my brand new Peachtree Nova died

    Just bought a Peachtree Nova and some new Monster cables (15' M series) to replace my aged Marantz SR5000 in our new apartment.

    Speakers are Mordaunt-Short MS902 (4-8 ohms), 10 years old.

    I connected everything together, ran the system for a day and everything sounded great. The next day I turned it on and ran it for about 10 minutes before it suddenly turned off. No lights on, nothing. It wouldn't turn back on.

    I unplugged the speakers and the inputs but it still wouldn't turn on but the fuse was intact.

    I disconnected everything, assuming that it was a faulty machine and went back to my old Marantz. A week later, while playing music at high volume, the Marantz went into protect mode. Even with everything unplugged it refuses to work now too, it just says "protect".

    The speakers and the Marantz were bought together and have worked for about 10 years. Only two things have changed. The location (we moved into a new apt) and the Monster cable, I was using a heavy gauge cable before but without any ends on it.

    Any ideas why this happened?

    Is it an impedance thing or a power supply thing? The peachtree is a 6 ohm amp, the speakers are 4-8 ohm but the Marantz has been driving them fine for 10 years and it's an 8 ohm amp.

    Could the Monster Cables have killed both amps?

    The surge protector I use didn't indicate a surge and the other devices connected to it are fine.

    Thanks for any help.

  2. #2
    Forum Regular Jack in Wilmington's Avatar
    Join Date
    Mar 2004
    Posts
    1,483
    Have you tried pluging the Peachtree into an outlet anywhere else, just to rule out the surge protector? Maybe a problem with the circuit breaker that feeds that outlet.
    2 Channel System
    Dynaudio Contour 1.8 Mk II
    Pass Labs X150.5 (Amp)
    Cary SLP-03 (Preamp)
    Music Hall MMF 5.1 (TT)
    Goldring 1012GX (Cart.)
    Pro-ject SE II (Phono Box)
    Rotel RCD-1072 (CD Player)
    Bryston BDA-1 ( DAC )
    Sennheiser HD-600 (Headphones)
    Musical Fidelity Xcan V3 (Headphone Amp) _

    HT System
    Usher X-719 (Mains)
    Usher X-616 (Center)
    Usher S-520 (Surrounds)
    Rel T2 (Subwoofer)
    Anthem MCA20 (Amp)
    Yamaha RX-A830 (Receiver)
    Panasonic TH-46PZ85U (Plasma TV)
    Denon DBT-1713UD (BluRay/SACD)

  3. #3
    Forum Regular harley .guy07's Avatar
    Join Date
    Aug 2009
    Location
    Springfield, Mo
    Posts
    1,594
    The main question I would ask is are the speakers sounding fine when the amps are working? Sometimes speakers crossover components can malfunction and cause a short in the line which will cause this. Usually it is not both speakers at the same time but I have seen it happen before and with both amplifiers doing it I would think that the only other common besides the supply power would be the speakers.

    Marantz SR5008(HT)
    Nu Force P8 Preamp (2 channel)
    Pass Labs X150.5(2 channel)
    Adcom 545 mk2 power amp(rear channel amp)
    Spatial Audio M3 Turbo S Mains Speakers
    Dayton 8" HO custom sealed subwoofer(2 channel)
    Yamaha NS-c444 center channel
    Emotiva ERD-1 surround speakers
    JBL e250p subwoofer highly modified
    Samsung 46" LED TV
    OPPO BDP-83 blue ray/multi format player
    ps-audio NuWave dac (2 channel)
    Dell I660 music server running fidelizer windows 8 audio optimizer
    PS Audio Quintet power center



  4. #4
    I took a headstart... basite's Avatar
    Join Date
    Jul 2006
    Location
    Mortsel, Antwerp, Belgium, Europe, Earth
    Posts
    3,056
    check the fuses in the marantz (if there are any)...

    Bigger cables could raise capacitance, and lower resistance, though this is only a little difference, it could be a trigger for the amp to clip, at loud volumes, combined with low impedance. This could cause the amp to go in protection mode, possibly blow a fuse. worst case scenario it'll fry your amp, but this is in a really extreme situation...

    Normally, though, a cable couldn't do this...

    check for fuses in the nova too, could be the main fuse that blew...
    as long as you haven't seen the magic blue smoke, it's still fixable


    Keep them spinning,
    Bert.
    Life is music!

    Mcintosh MA6400 Integrated
    Double Advent speakers
    Thiel CS2.3's
    *DIY Lenco L75 TT
    * SME 3012 S2
    * Rega RB-301
    *Denon DL-103 in midas body
    *Denon DL-304
    *Graham slee elevator EXP & revelation
    *Lehmann audio black cube SE
    Marantz CD5001 OSE
    MIT AVt 2 IC's
    Sonic link Black earth IC's
    Siltech MXT New york IC's
    Kimber 4VS speakercable
    Furutech powercord and plugs.

    I'm a happy 20 year old...

  5. #5
    AR Newbie Registered Member
    Join Date
    Mar 2010
    Posts
    4
    Thanks for the help. I had plugged both amps into another outlet and neither would work. The odd thing about the Marantz is that it won't come out of Protect mode even with nothing connected.

    Good to know that it's unlikely to be the cables.

    The speakers sounded fine to me but a short in the line from a bad crossover sounds like a potential cause. What's the best way to check this out?

  6. #6
    I took a headstart... basite's Avatar
    Join Date
    Jul 2006
    Location
    Mortsel, Antwerp, Belgium, Europe, Earth
    Posts
    3,056
    Quote Originally Posted by fevenbach
    The speakers sounded fine to me but a short in the line from a bad crossover sounds like a potential cause. What's the best way to check this out?
    do you have a multimeter?
    measure your speakers, measure the resistance (ohm), in your case, you should get a result between 4 and 8 ohms, or something like that.

    if you get 0 ohms, or a really low result (like 0,2 ohms, or something), you have a short. However, I disconnected and reconnected, I opened up speakers getting everything out, and in again, rewired them, disconnected and reconnected them again, and again and again. never had such a problem. a crossover doesn't just die. especially not both at the same time.

    This may sound stupid, but check the wiring too, did you connect the cables right? (however, if you didn't and the wires touched each other somewhere, it would have shorted out much faster, and your amp would probably have been melted down by this time...)

    Did you check the fuses?
    and also, did your amp get unusually warm when it was (still) working?

    about the marantz, the protect mode is handled by a relays, or a fuse (most likely not, but it's possible, check it to be sure), when doesn't come out of protect mode, either the relays don't come back to their normal position anymore, the fuses blew, or in a worser scenario, there is something else wrong in your amp, a cap that leaked, a transistor that broke, ... all symptoms of your amp being overstressed or overheated. You could check this yourself (get that multimeter out again..., or a leaking cap is pretty easy to spot...)

    (I didn't rule out cables neither, it's just pretty unlikely, it happened though, but never had any personal experiences with it...)

    Hope this helped...
    Keep them spinning, (well, when you can...)
    Bert.
    Life is music!

    Mcintosh MA6400 Integrated
    Double Advent speakers
    Thiel CS2.3's
    *DIY Lenco L75 TT
    * SME 3012 S2
    * Rega RB-301
    *Denon DL-103 in midas body
    *Denon DL-304
    *Graham slee elevator EXP & revelation
    *Lehmann audio black cube SE
    Marantz CD5001 OSE
    MIT AVt 2 IC's
    Sonic link Black earth IC's
    Siltech MXT New york IC's
    Kimber 4VS speakercable
    Furutech powercord and plugs.

    I'm a happy 20 year old...

  7. #7
    Forum Regular blackraven's Avatar
    Join Date
    Nov 2006
    Location
    St. Paul, Minnesota
    Posts
    5,421
    The cables are not the cause. Bigger cables will have less resistance and be easier on your amp. Sounds like a short somewhere. As stated by Basite, check the fuses.

    I did some checking on the internet and this seems to be a relatively common problem with the Marantz SR5000. Some people have said it occurred due to voltage oscillations among various other causes. It seems that you will have to send it in to be repaired based on other peoples comments.

    Hopefully its just a fuse with the Peach Tree. If its still under warranty, I would just tell them it stopped working and send it in.

    It your speakers are not the cause then you may want to buy a good voltage regulator and surge supressor.

    Good Luck!
    Pass Labs X250 amp, BAT Vk-51se Preamp,
    Thorens TD-145 TT, Bellari phono preamp, Nagaoka MP-200 Cartridge
    Magnepan QR1.6 speakers
    Luxman DA-06 DAC
    Van Alstine Ultra Plus Hybrid Tube DAC
    Dual Martin Logan Original Dynamo Subs
    Parasound A21 amp
    Vintage Luxman T-110 tuner
    Magnepan MMG's, Grant Fidelity DAC-11, Class D CDA254 amp
    Monitor Audio S1 speakers, PSB B6 speakers
    Vintage Technic's Integrated amp
    Music Hall 25.2 CDP
    Adcom GFR 700 AVR
    Cables- Cardas, Silnote, BJC
    Velodyne CHT 8 sub

  8. #8
    AR Newbie Registered Member
    Join Date
    Mar 2010
    Posts
    4
    Thanks for the help. I'm going to pick up a multimeter tomorrow and check out the speakers. I have a feeling it's them.

    The Peachtree's fuse was intact and the Marantz has, honestly, had problems since day one but has bee running smoothly for about 5 years now.

    I'll post results as soon as I have a reading on the speakers and a better sense of what might have happened.

    thanks again.

  9. #9
    AR Newbie Registered Member
    Join Date
    Mar 2010
    Posts
    4
    I tested the speakers and they came back at 5.4 ohms each. I'm guessing that the issue is then around power supply. However, the fuse on the Peachtree was intact and I'm not knowledgeable enough to locate and test the Marantz relay without a guide.

    I guess it's possible that this was a random fluke with an unlucky Peachtree and an old Marantz both succumbing at nearly the same time but my bet is power.

    Any recommendations on a power conditioner?

  10. #10
    Forum Regular blackraven's Avatar
    Join Date
    Nov 2006
    Location
    St. Paul, Minnesota
    Posts
    5,421
    I would buy this APC http://www.apc.com/products/apcav/pr...ase_sku=H15BLK

    You get surge suppression, voltage reugulation and filtering. It's on my short list to buy.

    Amazon has it on sale for $279.

    http://www.amazon.com/s/?ie=UTF8&key...l_33p4lhfiad_e
    Pass Labs X250 amp, BAT Vk-51se Preamp,
    Thorens TD-145 TT, Bellari phono preamp, Nagaoka MP-200 Cartridge
    Magnepan QR1.6 speakers
    Luxman DA-06 DAC
    Van Alstine Ultra Plus Hybrid Tube DAC
    Dual Martin Logan Original Dynamo Subs
    Parasound A21 amp
    Vintage Luxman T-110 tuner
    Magnepan MMG's, Grant Fidelity DAC-11, Class D CDA254 amp
    Monitor Audio S1 speakers, PSB B6 speakers
    Vintage Technic's Integrated amp
    Music Hall 25.2 CDP
    Adcom GFR 700 AVR
    Cables- Cardas, Silnote, BJC
    Velodyne CHT 8 sub

  11. #11
    Forum Regular blackraven's Avatar
    Join Date
    Nov 2006
    Location
    St. Paul, Minnesota
    Posts
    5,421
    Here's a good review on the APC unit I posted above.

    http://www.audioholics.com/reviews/p...ioners/apc-h15
    Pass Labs X250 amp, BAT Vk-51se Preamp,
    Thorens TD-145 TT, Bellari phono preamp, Nagaoka MP-200 Cartridge
    Magnepan QR1.6 speakers
    Luxman DA-06 DAC
    Van Alstine Ultra Plus Hybrid Tube DAC
    Dual Martin Logan Original Dynamo Subs
    Parasound A21 amp
    Vintage Luxman T-110 tuner
    Magnepan MMG's, Grant Fidelity DAC-11, Class D CDA254 amp
    Monitor Audio S1 speakers, PSB B6 speakers
    Vintage Technic's Integrated amp
    Music Hall 25.2 CDP
    Adcom GFR 700 AVR
    Cables- Cardas, Silnote, BJC
    Velodyne CHT 8 sub

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
  •