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lbossp29
05-05-2008, 09:10 PM
This question has to do with my previous post about power capacitor replacement, since I replaced them I have a new problem...this is my reply to the previous post, the second part about electrical interference is what I am wondering if anyone else has experienced


thanks for the input guys. I'm going to replace the cap that got hot just to be sure it isn't bad, because now I have a new problem. With the old caps my EV integrated had the hum oldhifiguy was talking about, plus serious distortion when treble and bass knobs were turned over 12 o clock. With the bass and treble at about 9 0 clock the amp sounded decent, but something was still wrong.

With the new caps I feel like the distortion has been lessened, although it is still present. The hum has been lessened, but now I have a major problem with interference. I live across from a water tower with cell phone trasnmitters on top. Some of my audio gear is affected by this. I have an old RCA stereo that looks like a 1960's boombox and the amplifier in it picks up awful interference, like the sound of the ocean coming and going, but it will increase or decrease if you move the radio around the house. Now the EV integrated amp is picking up the same interference, and all I did was replace the two power caps. It never picked up the intereference with the old caps. Any ideas? Do I have to retire my old gear because of the cell phone transmitters?

-Luke

ecluser
05-06-2008, 06:57 AM
You may ad a .01 uF / 1kV ceramic disc capacitor, across the transformer secondary, just after the power transformer and before the bridge rectifier. It will help filterring the RF signals picked up by the house wiring.