Thanks EEman, I will try steps 1-5 tomorrow when theres more light in the basement. I did try grounding the Marantz 7005 and the Outlaw 7700 and that did nothing.

I still have a Monster Power Bar at the TV, its a 1200, but the Monster Power 2600 has been replaced by a Tripp Lite Isolation bar and this feeds the amp, pre and some source compenents like the Oppo and the DirecTv DVR.


I got a Hum X and connected the Plasma to it. With the HDMI cable connected at the 7005 to the TV, and multiple HDMI cables connected to the 7005 inputs, except the DVR, no noise! smile

Connect the DVR via HDMI and the noise returns.mad

Connect the DVR via component video cables and the buzz is still there.

Tomorrow I am going to swap DVR. The one in th eroom now has a 3 prong plug, but I have a H22-100 (I think) in another room that is only a 2 pronger.


Edited by cp1966 (12/16/12 01:40 AM)
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Panasonic TC-P65S1 65" Plasma HDTV, Marantz AV 8801 Preamp, Outlaw 7700 Amp, Klipsch RF7 (X-over dean G modded) RC7 (X-over Dean G modded) RS7 CDT-5800C speakers, Outlaw LFM1 EX Subwoofer, Oppo BDP-93, B & O Turntable, Toshiba HD-A2, Sony CD & DVD 400 disc jukeboxes, DirecTV HD-DVR, PS2, PS3, Wii, Harmony one remote, Monster PowerBar 1200 for the TV, sub, PS3, HD DVD and Wii, Tripp Lite Isolation Bar for the Amp, Pre-Amp and other sources.