40D Replacement Arrived, Junk on Sensor Right Out of the Box!

i dont mind to clean my 20D. but my A700 was with a smear on the sensor from the factory. Beautifully cleaned up by canon distributor greece. Now about a year later it has a dust spot the size of a finger print relative to a 700px wide pic. I wonder how difficult these things are to disassemble and clean? in conclusion be happy you can easily clean your new SLRs.....

Southswede wrote in post #4122573
Gee what's next, another trip BACK to Canon, when there is the return of dust? It's a shame you wouldn't listen to the experienced people on this board....

Well, in the OP's defense, if he scratches or otherwise damages the sensor during cleaning, I rather doubt it'll be covered by his warranty. And while the two most notable sensor cleaning supply operations (Copper Hill and Photographic Solutions) each have their own guarantees, I honestly don't know if those guarantees have ever been tested or, if they have, what the circumstances and outcomes were.

Arguments about the low probability of damaging the sensor aren't very compelling in the face of more than one report here on POTN by people who have damaged their sensors during cleaning.

Each of us has to make his own assessment of the risks versus the rewards when it comes to cleaning the sensor. I'm willing to clean the sensor myself and if I damage it, I'll pay for it out of pocket. It's a risk I'm willing to take. For those who can't afford to pay for such a fix out of pocket, I have to wonder if personal property insurance would pay for getting the damage fixed. I've not heard of anyone ever trying that.

So I don't know that I would be quite so harsh on the OP. I mean, I can certainly see where he's coming from even if I don't happen to fully agree with his stance.

How about this approach: next camera I buy I'll clean its sensor thoroughly - as many times as necessary. In the first week.

If I'm not happy with the results, it goes back to the vendor as defective. Which would be a true statement.

-js

kcbrown wrote in post #4124146
Well, in the OP's defense, if he scratches or otherwise damages the sensor during cleaning, I rather doubt it'll be covered by his warranty. And while the two most notable sensor cleaning supply operations (Copper Hill and Photographic Solutions) each have their own guarantees, I honestly don't know if those guarantees have ever been tested or, if they have, what the circumstances and outcomes were.

Arguments about the low probability of damaging the sensor aren't very compelling in the face of more than one report here on POTN by people who have damaged their sensors during cleaning.

Each of us has to make his own assessment of the risks versus the rewards when it comes to cleaning the sensor. I'm willing to clean the sensor myself and if I damage it, I'll pay for it out of pocket. It's a risk I'm willing to take. For those who can't afford to pay for such a fix out of pocket, I have to wonder if personal property insurance would pay for getting the damage fixed. I've not heard of anyone ever trying that.

So I don't know that I would be quite so harsh on the OP. I mean, I can certainly see where he's coming from even if I don't happen to fully agree with his stance.

Especially if you don't know what you are doing, or know what you are talking about......which is why most new people read more and post less. If the Op had done that, he would know he is not really cleaning the sensor at all.

Southswede wrote in post #4126161
Especially if you don't know what you are doing, or know what you are talking about......which is why most new people read more and post less. If the Op had done that, he would know he is not really cleaning the sensor at all.

Sigh. I think we all know what I and others mean when we say "cleaning the sensor": we mean cleaning the glass cover that protects the sensor, which is part of the sensor assembly.

Semantic quibbles such as this don't do one thing to change any of the concerns people such as the OP have, namely that if you damage the sensor cover, you're talking about a repair that almost certainly isn't covered by the warranty and will likely run at least a couple of hundred dollars, possibly much more (some have said that for sensor assemblies such as that on the 40D, the entire assembly will require replacement if you damage the sensor cover).

kcbrown wrote in post #4128297
Sigh. I think we all know what I and others mean when we say "cleaning the sensor": we mean cleaning the glass cover that protects the sensor, which is part of the sensor assembly.

Semantic quibbles such as this don't do one thing to change any of the concerns people such as the OP have, namely that if you damage the sensor cover, you're talking about a repair that almost certainly isn't covered by the warranty and will likely run at least a couple of hundred dollars, possibly much more (some have said that for sensor assemblies such as that on the 40D, the entire assembly will require replacement if you damage the sensor cover).

Well ya got me there. One has to know one's limitations....

You live in southern california ? Drop it at the irvine service center. They will clean it for free (viewfinder, sensor and mirror).

silvex wrote in post #4132245
You live in southern california ? Drop it at the irvine service center. They will clean it for free (viewfinder, sensor and mirror).

You didn't read past the first few posts did you?