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After my initial heart-stopping experience with cleaning the CMOS chip surface of my Digital Rebel XT, I did a lot of reading and bought another item. This was a package of Pec-Pads – a very high quality lens and surface cleaning paper.
This time around I wrapped a small (10cm x 10cm) Pec-Pad square around the end of a sterile cotton swab, folding it to make a small flat edge at the end. Applying some ultra-pure methanol to this (two or three drops), I then swiped it once over the CMOS surface. Only once – I threw the paper away immediately afterwards. I repeated this several times with similarly folded fresh Pec-Pads.
After about six swipes the CMOS appeared completely clean. It took six swipes to remove some particularly stubborn dust, but it did at last come off.
I was fortunate that I could do this in a tissue-culture hood – essentially a filtered, dust-free, environment. That's a luxury that most photographers – or many photo repair centers for that matter – are not going to have access to.
Having done this sucessfully without too much sense of impending doom during the process, I feel confident that I can repeat it. This is very good. 🙂
I once promised myself not to make any attempts whatsoever to clean the chip with any solid matter whatsoever.But I must admit that you´re tempting me.
I would counsel you to be very wary, despite my own experience. You are dealing with a very expensive part, are most likely voiding your warranty, and are going to feel very bad indeed if something goes wrong.On the other hand, if those specks are really bothering you, they can be removed! But safety and care first.
I'm too much of a coward to clean my chip..so I hunker down and remove the one irritating spot pixel by pixel using photoshop!Hae a good weekend Allan (and welcome back) and Musickna:D