Wanted to provide some input on the fix from NCCouchTater and ChuckMountain. Thanks to both of you for providing some instructions on this!
I have been looking into this since NCCouchTater first posted back in 2015 really. Finally with ChuckMountains verification of the fix and additional details along with my degrading RS15 / HD550 I got the courage to attempt this myself and boy am I glad I did.
Unfortunately I don't have a before picture, but it was very similiar, a bit worse, than the before picture of ChuckMountain.
The projector had a Magenta stripe on the left hand side of the picture (mine is wall/ceiling mounted, so upside down).
I have a 117" screen and the stripe was a good 8" wide or possibly a bit more, even after masking the edges and attempting to move the picture sideways in the HTPC I got hooked up. So might have been 10-12" wide without the masking.
It has been slowly developing over the last ~3 years where the line slowly creeps further and further. When I first noticed it, it was barely 1".
So most of the instructions are available from the other posts but I wanted to provide some experience from my side as well.
1) Disassemble top cover:
First of all, get yourself a service manual or google some instructions on how to disassemble the projector.
This was really no issue at all except for the 4 hooks holding the top cover of the projector in place when the lamp cover and the 5 screws have already been removed.
There was a slight gap in the "trim" between the top and bottom cover where you could insert a screwdriver or similar to push the hooks. (Seemed like this was the idea of how to get it done). I managed to break the plastic "trim" into two pieces (doesn't really show after putting it back together). It was much easier to just firmly press the cover inwards on the area where the hooks are and lift the cover slightly then they were released. So just my input on getting past this hurdle...
2) Remove metal cover:
Once you have the top cover off you need to remove 12 screws to get the metal cover off that is showing underneath.
3) Run the projector to get to know your issue:
At this point I would (in hind sight) opt to run the projector. Then you will see what you see in the picture with the blue and green light from the optical block (iphone distorted the colors from real life). While running the projector at this point you can press the part of the adjuster that is sticking out, the metal plate (you need to press quite firm). Doing so will allow you to slightly adjust the mirror but only in two directions. If you are able to remove the stripe by pressing on the metal plate in either direction make note of which direction. Then shut down the projector again and continue.
4) More disassembly if needed?
If you have an issue with a yellow line (blue mirror out of alignment) you are really in luck as then you won't need to disassemble any further, move to step 5.
If you have an issue with magenta line you need to get the optical block out of the projector, which requires disconnecting quite a few cables, removing the lamp, removing the front cover, etc... Took quite some time, but nothing were too difficult. If you have an issue with cyan (I guess it would be Cyan?) stripe you are more or less out of luck. It is extremely difficult to reach the third mirror adjustment while the optical block is in place. In this case you would most likely need to disassemble to a point where you could bench-run the optical block completely removed from the projector. You might be able to remove the plates without disassembly if you have the right tools, I wasn't able to so went ahead with disassembly.
5) The adjustment plates:
Remove the adjuster from the optical block by removing the two screws. Then the pulling on it straight out (the clip on the adjuster is attached to the delicate glass mirror inside the optical block).
a) If you were able to get the stripe to disappear by pressing the metal plate of the adjuster, at this point with the adjuster out, use your hands or two sets of pliers to bend the metal plate of the adjuster compared to the base of the adjuster. Thus making the "normal" position of the adjuster the same as when you pressed on it while the Projector was running. Slight adjustments are all that is needed.
b) If you weren't able to get the stripe to disappear by pressing the metal plate then you need to either follow ChuckMountains breaking the glue or NCCouchTaters tape-version. Since I (unfortunately) wasn't aware of this idea of bending the metal plate at this point of my process (which would have made life so much easier) I broke the glue. As you can see in the pictures attached I then applied glue on both parts, re-installed half the adjuster with the clip on it and then screwed the other part of the adjuster in place. I used 2 hour epoxy which actually took all night to set 100%. This is a very strong glue which can handle a lot of heat and you get long time to adjust. I thought it was a good choice. But there are obviously options out there.
6) Run the projector again:
Now run the projector again, if you used the glue-option you will be adjusting your mirror while the projector is running. I did this with the yellow mirror (looks green in picture) down at the bottom. It was possible to get a finger on it, but not more. Small movements made huge differences. Once you are happy with alignment stop, shut down the projector and let the glue cure.
Next morning when starting the projector, my adjustment unfortunately drifted very slightly while it was curing so in the end I have a hairline stripe which is only visible showing totally white screen and basically only if you know to look for it, still very, very happy with the result.
Also I had a yellow stripe in the same location. Not sure how I managed to develop this, maybe it was there all along only not really visible as the magenta as there as well and the yellow stripe was a lot smaller. Maybe I got something out of alignment when working on the projector.
At this point I went ahead with the pressing metal plate and it made the stripe disappear so I performed step 5a above and all was fine, no line visible at all.
So one conclusion on the bending metal plate approach is that if you have a yellow stripe on either right or left side of screen you will probably be able to bend the metal plate to get it correct as bending it seemed to cause this movement of the mirror.
In this case you really are in luck. Then just follow step 1-3 + 5a and finally 6. Should be possible to do in 1-2 hours time with minimal risk and using only a Philips screwdriver and possibly a pair of pliers or two depending on how strong your fingers are, i did it without pliers no problem.
I am not sure if pressing the metal plate of the adjuster for the yellow mirror would completely remove the magenta stripe, but it is possible and in that case a very simple solution as you won't risk getting out of alignment in any other direction (turning the adjuster, instead of pushing it back or forth).
Good luck to anyone out there with this same issue.
Last edited by semikroo; 01-02-2019 at 01:34 AM.