View Full Version : Harman kardon amp buzz
05-04-2008, 02:01 AM
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.
05-04-2008, 03:26 AM
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.
05-05-2008, 12:55 AM
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.
05-05-2008, 07:45 AM
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?
05-05-2008, 12:21 PM
See post #2.
05-05-2008, 12:26 PM
Get a 3 prong to 2 prong adapter at Radio Shack & see if that takes care of it.
05-05-2008, 08:59 PM
05-06-2008, 09:57 AM
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.
05-06-2008, 10:05 AM
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.
05-06-2008, 10:35 AM
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?
05-06-2008, 10:36 AM
Sorry i will try the rca speaker cable thing tonite
05-07-2008, 05:31 AM
If you tried what cfrizz has suggested and it didn't help I'd follow F1nut's advice.
06-04-2008, 08:51 PM
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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