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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
erik_squires
16,116 posts
 
Mytek is my favorite DAC right now. :)

Best,

E
Ag insider logo xs@2x
tonykay
1,301 posts
 
You asked for advice, so here it is. Pay the $119 for the new board. Oppo will test it before returning it to you. If the problem is not cured, that'll be one less thing you'll need to consider. As an alternative, do the things you suggested BEFORE you send it to Oppo. If you solve the problem, you're $119 ahead! I think you can trust Oppo not to hose you. Best of luck.
erik_squires
16,116 posts
 
I wish I could find a schematic. If it's anything like other designs the mods are simple. Bypass the 100uF coupling caps with some 1uF film caps such as Cornel Dubelier (sound OK, and small) or replace the caps and bypass them with Elna s.

Best,

E
mechans
3,048 posts
 
You said that you isolated the issue to the sound board,  but previously noted that an interconnect change helped, with some sacrifice.  I wonder if you just don't like the nature of the treble emanating from this player? 
greatwhite11 OP
26 posts
 

Yes Thank you Tonykay ...

I am thinking of doing this however I am looking at my options to where I ca have a few mods in the process .. maybe a mod on the board itself,  power supply and the caps that Erik suggested at the same time. I rather not spend a lot of money on a full blown mod on the unit at this time.

I am searching for the gentleman that does mods on the oppos and his name escapes me at the moment .. need more coffee or is it a senior moment?  

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