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  1. 05-04-2008 01:01 AM #1
    xterra77
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    Default Harman kardon amp buzz

    Hi Guys
    I am finally into separates,now my question is my HK pa5800 amp is humming.When i turn it on it has a loud hum then it goes lower but audible,it is from the amp not thru the speakers,when i first tried the amp with nothing connected to it to see if it worked there was only the start up hum,then it would go to a faint hum,now it has a louder hum,Would i be ruining any of my equipment.
    TKS
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  2. 05-04-2008 02:26 AM #2
    F1nut
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    You should have a tech look at your amp, if it's worth spending any money on. If not, time to shop for a replacement.
    'Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end."
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  3. 05-04-2008 11:55 PM #3
    treitz3
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    Default Just a thought......

    Hang on a second. What are you trying to power? What else is connected to the circuit leading to the circuit breaker? There could be something else [maybe not...maybe so] that could be the cause.
    In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence.

    "The best way to enjoy digital music reproduction is to never listen to good analogue reproduction". - Kenneth Swauger
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  4. 05-05-2008 06:45 AM #4
    xterra77
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    I have my mca30 amp on 1 outlet
    then I have my monster 5100 line conditioner power surge,
    ont the other the pa5800 amp is connected to the monster along with,tv,dvd player and subwoofer.
    I unplugged the mca and connected the HK directly in 1 outlet same thing,but now my problem is worse,I woke up this morning and the amp is humming loudly while it is off?
    I used it last night and no humming at all strange,
    i am baffled?
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  5. 05-05-2008 11:21 AM #5
    F1nut
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    See post #2.
    'Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end."
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  6. 05-05-2008 11:26 AM #6
    cfrizz
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    Default

    Get a 3 prong to 2 prong adapter at Radio Shack & see if that takes care of it.
    Sunfire TGP III PrePro, Sunfire Cinema Grand Signature 405wpc 5 ch. Amp, Rotel RCD-1072 CDP, Onkyo TA2600 Tape Deck, Pioneer Elite 47-A DVD, Sony 32" XBR TV, Polk RTA-8T Main Speakers, Boston VR-920 Center Channel, Boston PV-600 Subwoofer, Polk DSW 400 Subwoofer, Polk FXi-3 Surround Speakers
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  7. 05-05-2008 07:59 PM #7
    Keiko
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    disregard
    Last edited by Keiko; 05-05-2008 at 08:19 PM.
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  8. 05-06-2008 08:57 AM #8
    MikDrago
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    I also have a PA5800 and sometimes when you turn it on there is a brief hum and then it goes away. It lasts about a second but there is no hum after. I have heard that many people with this amp have the same turn on issue. I have it hooked up to a monster powerbar surge protector with clean stage 2. Again, it does not do it all the time but when it does, it only hums for a slight second.
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  9. 05-06-2008 09:05 AM #9
    MikDrago
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    Also, make sure that your RCA inputs and speaker output cables are not touching or resting on the power cable. This may cause the humming you are experiencing.
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  10. 05-06-2008 09:35 AM #10
    xterra77
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    4th day now what I have noticed is that in the morning
    the hum is extremely loud,I have mine hooked up to montster clean stage4,I tried disconecting the tv,the sattelite,my avr.nothing.What i do notice is if I turn the amp on and then my avr the amp make like a startup hum noise.Could it be 1 of the capacitators?
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  11. 05-06-2008 09:36 AM #11
    xterra77
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    Sorry i will try the rca speaker cable thing tonite
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  12. 05-07-2008 04:31 AM #12
    Keiko
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    If you tried what cfrizz has suggested and it didn't help I'd follow F1nut's advice.
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  13. 06-04-2008 07:51 PM #13
    xterra77
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    Well guys I did evrything you guys mentioned,I also brought the amp in cost me 45.00 and the amp is ok.
    I plug it in at home I get a hum any where in the house.
    Strange i have a brand new Anthem MCA30 and I have no problem.So I got so frustrated that I put the amp for sale.
    (the harman that is)
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