H/K 520 shutting down!!!

Discussion in 'Archived Threads 2001-2004' started by Craig Ball, Oct 6, 2002.

  1. Craig Ball

    Craig Ball Second Unit

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    Today I packed up my Acurus amps after sending my Outlaw 950 back, well now i'm using just the H/K and while I was trying to adjust the test tones it kept going into stand by mode (really pissing me off) after about an hour of screwing around i think i have my teat tone set right. Then i put in a cd and crank it for about an hour, no shutdown!!! whats going on? When i first got the H/K i immediately used it as a pre-amp and never had it shutdown, why is it doing this now, No it's not a ventalation problem.

    Craig
     
  2. Brandon_S

    Brandon_S Second Unit

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    Craig,

    I would check the speaker wire to make sure it is connecting to the receiver fully. I had a Sony model receiver that went into "Protect" mode a while back. After reading all the horror stories of Protect mode I was ready to buy a new receiver. Turns out it was just a speaker wire that had partially come out of the receiver. I'm sure others here will have ideas also. Good luck!

    Brandon Smith
     
  3. Craig Ball

    Craig Ball Second Unit

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    Thanks Brandon, I'll have another look.
    For whats it's worth I just finished watching Monsters inc. and it did not shut down.

    Craig
     
  4. peter_anderson

    peter_anderson Stunt Coordinator

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    Craig: My 320 shuts down randomly, and I eventually determined it is due to the finicky power in my apartment. Sometimes the shutdown would be triggered by turning off the TV, or the refrigerator. The clue was that it would never shut down while under load, only while sitting idle, meaning that when the transformer had reserves, it wasn't as susceptible.
     
  5. Yogi

    Yogi Screenwriter

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    I dont know if its me but have any others here felt that the internal build quality of HK 520 sucks. The other day I looked inside the top of a HK 520 and was shocked to see the piss poor heatsinks in that piece. The other receivers I have looked inside like the Denons and Onk's have regular machined aluminum heat sinks but the HK had a strip of aluminum bent in the shape of a heat sink. I thought that was very shabby. Maybe the other components used in the 520 are top notch, I dont know. I like HK sound very much and think that their receivers are one of the most musical. The 520 is such a wonderful piece in terms of sound and features but HK should put some more into the build quality of these units. I have never owned a HK and maybe they are more reliable than the other recievers in their price point, so guys dont take it the wrong way. I am not bashing HK by any means.
     
  6. Craig Ball

    Craig Ball Second Unit

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    I rest the H/K back to factory settings and all is well in H/K land again.

    Craig
     
  7. StevenK

    StevenK Second Unit

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    I had the shutdown problem with my 520. H/K and Onecall said it's a known problem...but with older houses with bad wiring. Apparently, the H/K amps draw a ton of currents, so if your house wiring isn't up to snuff...then poof.

    Funny thing was I was using it as a pre-amp, and my current Newcastle amp draws more juice than the 520. The shutdown problem actually made me get rid of it....it's a shame too, cause it's a nice sounding receiver.
     
  8. Yogi

    Yogi Screenwriter

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  9. Bob Friend

    Bob Friend Stunt Coordinator

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  10. Yogi

    Yogi Screenwriter

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  11. StevenK

    StevenK Second Unit

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  12. RobP

    RobP Stunt Coordinator

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    My 520 shuts down randomly too. I've heard the wiring explanation before too and I've noticed that it will sometimes shutoff when I unplug my fan and stuff like that. But no matter what HK's explanation is I refuse to blame it on anything other than HK's receiver. My $150 Kenwood receiver never shut down on me and didn't have half the problems this thing has. Although I am not asking for it back because it also didn't have the great sound quality this receiver has but you see my point.
     
  13. Lee Shankman

    Lee Shankman Extra

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    I, too, have this random shutdown problem. I haven't figured out exactly what makes it happen, perhaps it has to do with turning on or off other things in the house, like appliances or other electronic gear? When I'm just sitting in front of the tv watching, it NEVER turns off spontaneously. When I have it playing music loudly while I"m working around the house, it NEVER turns off. So maybe it has to do with turning other things in the house on.

    I need to do a little more research to figure this out. I also may try resetting to factory defaults like Craig did. If none of this works, I guess I'll need a UPS.
     
  14. Greg Kolinski

    Greg Kolinski Second Unit

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    Add one more to the mystery shut down,mine did it last night.I attributed it to getting too hot from being in an enclosed in the front cabinet,and having some components on top of it.Seeing how better than 50% of the unit in not obstructed i figured it would not be a problem,heck my JVC didnt mind.So just in case I now have a 8 in fan mounted on the wall ,blowing across the rear of the unit,and am in the process of building some 2-3 in spacers for the component on top of the receiver.I also happen to have my thermo probe toll here,so Ill get some measurements and keep everyone updated

    Greg Kolinski
     
  15. Craig Ball

    Craig Ball Second Unit

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    Ok shutdown issue is back again!!!! I see a few of you guys have yours plugged into a UPS and this helped, what is a UPS?

    Thanks
    Craig
     
  16. MarkO

    MarkO Second Unit

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    Im going to take a stab at this. It sounds to me the amp's relay is to blame. Since you stated the unit worked flawlesly as a preamp. The amp's relay is the second click you hear when you turn the unit on. For some reason the power circuit feeding the pulldown coil or the coil itself is faulty or of poor design. The pulldown coil is simply an electro magnet that pulls down a set of contacts to power up another circuit. In this case the power amps. Im willing to bet the pulldown circuit on youre unit is very sensitive to current drops. Meanning if the household current droops too low for any reason the power needed to hold the relay closed or "on" is not enough to overcome the spring that normaly holds the relay contacts in the open or "off" possition. This would explain why the UPS helped remedy the problem. I would call HK and see if they have a fix. Goodluck
     
  17. Craig Ball

    Craig Ball Second Unit

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    Thanks, but again what is UPS?

    Craig
     
  18. MarkO

    MarkO Second Unit

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  19. Steve Adams

    Steve Adams Second Unit

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    This is what i have been saying here for the past while, H/K's have problems. they sound good but have crappy quality control. when I worked at the dealer here, out of all the receivers we sold, Kenwood, sony yamaha pioneer, panasonic and H/K, the Harmons were the ones being returned because they crapped out on people. I would never buy one, they were like this before the x20 series as well.
     
  20. Louis_L

    Louis_L Auditioning

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    I had a similar problem with a new H/K AVR 120 this year. It would shutdown randomly.

    I went through hell to get it "fixed" from the service center and finally got a replacement after almost 6 weeks! It's working fine now, but I personally wouldn't buy another H/K after this experience.
     

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