My first post on these forums, so be gentle...
And I know this is an old thread, but anyways...
I own a PL50C7000Y with one SSG-2100AB glasses that came with the TV, and two SSG-2200AR glasses I bought later.
I've been dealing with this sync problem from day one, and managed to reduce to zero the sync problem with one of the SSG-2200AR glasses using the electrical tape trick. The other two will still lose sync now and then, don't matter how much electrical tape I put on them.
IR emitter is working fine. I checked it with my cellphone camera. Another proof is that I managed to get one of the glasses working perfectly.
By the way, the emitter has three LEDs: one points to the right, one to the center and the other to the left. You can check it out getting very close to the emitter with your camera.
Well, back to the sync problem.
I was doing some weird testing today and found a solution that works 100%. Not fancy, will not look good, but it works.
Sometime ago I ripped off a (very) cheap webcam, and kept the pieces. Those that comes with "night vision", that means six IR LEDs to "see in the dark". These cameras comes with a little IR filter inside. Yes, its a IR cam, but still they have a IR filter. This filter is almost the same size of the IR sensor on the glasses. If you haven't seen one of these before, it is a very small square piece of transparent glass looking plastic with a light glossy paint.
So I though: what if I use this filter in front of the IR sensor on the glasses and see what happens? will it work?
Well, it does!
No eletrical tape. Just the IR filter in front of the sensor and made sure no light would come from the sides.
I watched about 30 minutes of Thor again. Just the parts I was getting sync issues. Not one single flicker, and I mean not even one of those that flicker so fast you almost can't see it.
My guess is that the IR filter eliminated any inteferance coming from the plasma panel. Since the filter is not that strong, it could not block the signal coming from the IR emitter.
So, this is my impression so far. I wanted to share with you guys to put this on the test. Can anyone do the same and check if it helps? Post your comments.