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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 Mechans

Yes that's my best guess is the sound board of the Oppo.

Its not that I don't like the quality of the treble .. its an issue of the sizzling tweeter

Yes an interconnect change helped with the periodic sizzle only in that it was not as audible .. but that was going from the (balanced output dac of oppo with my Wireworld Gold Eclipse 7) to changing to the (rca outputs with my DHlabs silver sonic single endeds).  

I want to keep my wireworlds in order to utilize the better balanced dac of the oppo as well as utilizing the balanced circuitry of my Mark Levinson No. 433

Less revealing interconnects will probably make the sizzle inaudible but that's of course what we all don't want .. a less revealing system.  

greatwhite11 OP
26 posts
 

I'm going to be taking the oppo out of the system and open her up and perhaps get lucky with vacuuming and spraying contact cleaner ... ya right  "good luck on that .. let me know how it works out for you" ..  I guess worth a try for now ..

Thank you guys for your input on this 

greatwhite11 OP
26 posts
 

Yes my mind is working now!

The gentleman that I was thinking of contacting is

Ric Schultz                                                                             

Electronic Visionary Systems

I heard good things about his mods.

Post removed 
sbank's avatar
sbank
3,379 posts
 
Scott, FWIW, the outputs of the 105 aren't truly balanced. Going single ended shouldn't make a big difference. 
Did you try a different pair of XLR cables? It could be something as simple as a lose ground wire inside your cables. 
Did you try a different disk player in your system using your same cables to isolate to the Oppo? 
Even if you just borrow a dac to help in evaluation, feeding it from the Oppo's digital outs could isolate the Oppo analog board/outs as the source of the noise. 
Have you tried physically moving around your cables and messing with any cable intersections, power cables touching interconnects, cables looping, etc. that might be acting as antennae and picking up RFI? 

Lastly, if this issue "appeared one day" after having had the unit without trouble beforehand, it certainly sounds like something needing repair more so than you just not liking the presentation of the Oppo. 

Modding broken gear is worse than putting lipstick on a pig. IMHO, you need to find the root cause and eliminate the it. Cheers,
Spencer
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