Synergistic LED's How long do they last ???

Der,
Replacing the LED's yourself can have a significant negative impact on the performance of Active Shielding. This is due to the fact the LED's are tied to resistors which not only load the Active Shielding circuit so the MPC does not burn out, but they (resistors, and led) have a direct impact on the sound of the cable when Active Shielding is turned "on"; the differences between LED's and different resistor types can spell the difference between great sound and hard and bright sound.

It is always best to have any such repairs performed at the factory.

Yours in music,
Ted Denney III

Ted, in that case I am glad I asked about the LED. I'm reluctant to ship the cables back for a repair involving such simple and cheap stock parts when I can instead do it myself, save a few bucks on shipping, have almost zero system down-time, and also derive such satisfaction from being self-reliant.

But I don't find any markings on the LED to indicate just what it is, so I still hold out hope that you will tell me or otherwise enable me to do it at home. Please??

May I suggest simply phoning SR and explain your request to Eliott. They'll possibly sell you a pack of LED's at cost + a few bucks shipping. You may even get the OEM heat shrink too. However they'll not likely honor any existing warranties if you do a DIY repair.
These guys are among the best in the business to deal with in my experiences, very accomodating. Meeting Ted personally at Mike Holm's shop, when he demo'd his new Teslas, was an enjoyably memorable occasion indeed.

I have contacted them, although not by phone. Synergistic certainly knows of my request. I suppose I'll just continue to take my chances. But I'm as likely to send the cables in for this simple repair as I am to ship a Ford back to Detroit for a new headlight.

Der,
As you have already discovered replacing the LED’s is not a simple task. In your first post you state you already rebuilt the Active Shielding using red LED's. Then when I posted my response you seemed to recant from your original post implying the work was yet to be performed (at least this is how I read your first two posts).

I am not certain what is not being disclosed in your post but we would love to take a look at your cable and figure out why you had two LED’s go out on one cable. This is as rare as finding twenty-dollar bills on a busy sidewalk- it happens but not very often. In fact I just checked the company database and we had less then 20 such repairs for all of last year and none had more then one burned out cable so something is up. I suggest you call the factory on Monday and get an RMA. Let us have a look at your cable (and power supply) and we should be able to correct your problem same day and get your cable back to you right away.

Yours in music,
Ted Denney III
Lead Designer, Synergistic Research Inc.