LarryC

Happy days again! Not to be too irreverent, but the perfect day for it to have apparently arisen from the dead!!! I took everyone's advice and went through every connector I could find, even those not normally disturbed during sensor module replacement and...it's back! Whew! And I had already begun looking for a new T2i on the bay. I have polishing tips for my rotary tool and some new PlastX and Novus polishing compounds on their way to try.

Thanks for the optimism. I will take it apart and check, again, the cables.

Well, it's a sad day indeed. I received the new ebay sensor module and replaced the module in my current 550D. After reassembly and power on, I got a menu and could navigate around fine, but when I pressed LV I got an image for a second or so then the screen went to the first image below and after 5 or so seconds, went black and the red activity light came on and stayed on, and would not shut off even after I turned off the camera. I had to pull the battery. Turn it back on again and there's the menu just fine but it says something like "failed to properly shut down, not loading module". If I try to take an image in any mode, the shutter and all seems to work, but there is no image the the red light again comes on permanently and I cannot turn off the camera. So, I take a close look at the new module and notice that one of the grounding straps is broken off (second photo - notice the upper left screw, you can see the end of the broken piece). Looking closely at the ebay photo, sure enough the ground strap is broken. It was easy to miss because the break is clean and in general the two modules look the same. I put my "good" sensor module back in and I get the same results. I looks like I might have cooked my camera? Could the missing grounding strap have killed it?

My plan was to scrape but with a different type of wood or plastic tool, but I did notice that it was fairly easy to clean up areas by hand polishing that I was not able to scrap clear, so maybe I'll start with polishing and see how that goes, then revert to scraping if necessary. I have a large biologics laboratory and we have some interesting plastic scrapers intended to remove cells from plastic surfaces without killing them. I was thinking of tying one of those.

Well, I have my second experimental T2i sensor on it's way to me. I'm not sure what I'll try different this time - scraping or polishing- but I will test it at every step as Gina suggested.

Well, Sadly It looks like I must have killed it. Everything powers up, but I can only get black images. Re-installed it a second time and same result. Put he original LPF-2 modded sensor in and it works fine. Don't know what I might have done to kill it. Truth is, though, I don't really know it ever worked (though I assume it did). I ordered it off the bay as a manufacturers refurb and didn't install it to check it's function. Will do it differently next time! Off to hunt for another sensor...

Herra, I took those with my iPhone. Here's a set I took tonight with my D800. I probably won't get a chance to swap sensors in my 55D until this weekend, but I will post the results when I do.

Well, I planned to order out a rework station and a pen torch, but I decided that I would try to work the cover glass off with a razor blade. Very slowly I began prying just a bit under the corners. After a few minutes I could see a bit of "white" as the glue ever so slightly separates, but no more than 0.5mm or so from the edge. Then all of a sudden I thought the blade slipped and I was about to loose my thumb and finger holding the sensor bracket, but in fact the glue had just gave way and the blade slid 3/4 of the way under the entire cover glass! I was able to slide the blade all the way to one of the long edges before the glass cracked. It took a bit more to get the last large piece detached because the blade did not want to go under the two remaining corners, but again, all of a sudden it just broke through the corner section and the last piece of glass just fell off. I think the last piece of glass slightly bent a couple of gold wires when it flew off the bracket, but they are just slightly bent and it's possible they were that way before. The last piece of glass also left just enough of a slight scratch in the bayer/ML that served as my starting point to start scraping. Using Gina's idea (I think it was Gina's idea) to use the plastic filter holder as a shield, it took about 30 minutes ti scrape away the ML and the darker bayer layer. I then used a Q-tip to wipe the surface with denatured alcohol, then polished the bulk of the surface with some old car polishing compound I had around, then DNA again, then wiped with a micro fiber cloth. There's a bit here and there still to remove and I only went close to the green boarder insider the blue boarder (why are there two boarders?). However... there's always a "however"... the underlying sensor looks pretty scratches up, presumably from the toothpick I used for scraping (I tapered the end to have a slight flat). The next step is to replace the working sensor in my 550D with this one to see if it still works and how bad the scratches affect the image (if there is an image !) The broken cover glass pieces (all of them - no small shards) are above the sensor in the pics below.

Gina, If I read everything correctly, the 550D requires heat. But, I've scraped off the excess "glue" around the cover glass and am trying to slowly work a razor blade under the glass - no headway so far...

Thanks. I just finished reading EVERY page of this thread. Wow! I saw only a couple of references to the 550D, but they did seem to be reporting success, but only reference cover glass removal by "heating". Would anyone whose worked with this model be willing to provide specifics on the methods: torch, re-work station, heat gun, soldering iron? Otherwise, based on everything I read, I plan to debayer using the wooden tool method followed with polishing compound by hand. No epoxy and avoid the blue fringe by 1-2mm.

Hello all. I'm glad to have just discovered this thread. I'm working on a water cooled and mono-modded 600D. I've LPF2-modded a 550D and the 600D and have the water cooling fairly well sorted out. I was setting out on the mono-mod part of the project until I hit the dreaded cover-glass-over-the-sensor snag (!!!). A little research brought me here, so I don't fee so alone out in the wilderness anymore . I'll read through all 92 pages of the thread, and I bought a spare sensor off the bay for $50 to practice, but I look forward to moral support an hearing about success stories. Larry