2. tech-talk
  3. 127856-74625

Oppo 105D high frequencey sizzling issue anyone help me suggesting a mod that i can do or?

Ya No .. so I have had the Oppo 105D since April 2014 and have enjoyed it and never had an issue .. until lately ..

I am getting a high frequency sizzling at the tweeters via the dedicated balanced 2 channel outs.

With less of a revealing interconnect one can not hear it at my listening distance of 10 ft but I do want to keep my WireWorlds Gold Eclipse 7s .. as they are so open and revealing ..

I know that its the Oppo as I have isolated and changed out speakers, cables, interconnects, power cords and by passed my power conditioner as well and all leads point to the noisy audio board.

So I contacted Oppo and it would be $119 for them to put in a new board .. very reasonable I think .. however they cant guarantee me that it will solve my issue as they cant duplicate my exact set up and interconnects..

with the above stated .. maybe I should look into a modification as we all know there is a lot of mods that can be and are done with the oppo 105.

Maybe I try things myself? Thinking of trying to emi rfi shielding the power transformer, power supply cover, transport lid 
 Any suggestions and real world experience that you may have are greatly appreciated.

Thank you for your time .

    

greatwhite11
greatwhite11 OP
26 posts
 

Hi RSV4

Its not my Focals , I already changed them out ..

but not sure if I did in fact try swapping channels .. good idea I will

I just did change the inputs and now I am getting more sizzle on the left channel but oddly there seems to be a bit more sizzle on the other channel now as well ..

I am running 1/2 meter balanced WireWorlds and I am going to try to raise my oppo player up more (my oppo is on the bottom shelf of my Mark Levinson) to take some of the tension off the interconnects .. I wonder if it is that simple? I will try this as welll  

greatwhite11 OP
26 posts
 

No luck .. there was not much tension on the interconnects anyways ..

I did just sprayed contact cleaner on to the oppo balanced males as well as the female ends of the interconnects .. see what this does ..

Next I will be taking the oppo out of the system and opening her up .. maybe lightly vacuum and contact clean some areas ..  

greatwhite11 OP
26 posts
 

Uhm .. ya .. ok .. so I have the oppo out of the system and have taken the hood off her and there really is not much I can do as far as cleaning?

Any suggestions .. I just sprayed the balanced inputs other than that I dont think I really can do anything else with out changing out parts ..

nutty
2,906 posts
 
scotttexeira,

For your guidance, my Levinson no.334 is fully balanced, as I’m sure your amps is as well. My manual states that:
"...SINGLE-ENDED INPUTS
These RCA connectors accept single-ended inputs from preamplifiers with
single-ended (RCA) outputs. Single-ended input signals are converted to
balanced signals immediately upon being received at the amplifier, and are
handled as balanced signals thereafter..." "Be sure to utilize ths ML shorting pins".

You may utilize a high quality single ended interconnect and retain the high quality playback from your Oppo, or any other single ended device.
Best of luck.
N
greatwhite11 OP
26 posts
 

Hi Nutty

Yes I wanted to use my balanced connects for a complete balanced set up however under my current circumstance with the output noise from the balanced outs of the oppo I am now changing over to the rca out. Luckily I do have two Cardas Audio gold xlr to rca adaptors that I will be using for my left and right dedicated stereo outs of Oppo and I will use my only shorting ring that I have for my center. All the 3 channels will now be running rca via oppo .. I am hoping there will be no noise we shall see ..

Thank you!!   

I cant remember how this shorting ring goes .. I will do a quick google check  
 
 

More to discover