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Pete, Electronic Engineer
Category: Camera and Video
Satisfied Customers: 18096
Experience:  Over 16 years of experience installing and repairing electronics.
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I have a Canon T90 which was purchased some time I just

Customer Question

I have a Canon T90 which was purchased some time I just put new batters in and a film when adjusting the settings its come up E E E in the screen and It will not let me change the settings. I do not know what I did. can you help me please. thanks Garnet
Submitted: 2 years ago.
Category: Camera and Video
Expert:  Pete replied 2 years ago.
Hello Garnet,
I am Pete, and I'll be happy to assist with your question today.
This problem is most likely to crop up after the camera has been left unused for some time; therefore the best way to prevent it is regular use of the camera.
The error is caused by dirt on the shutter's magnets affecting their performance.
If left unused for an extended period of time the circuit will need replacing, an expensive and time-consuming proposition.
The sticky shutter problem relates to a rubber washer which is involved in the operation of the shutter. With age and atmospheric conditions, it tends to perish and become sticky, so that it impedes the operation of the shutter. Frequent use can delay the stickiness from 'gluing up' the shutter, but once started, the only long-term remedy is to have the shutter repaired, when the rubber washer is replaced, and so another 10 years or more can be enjoyed with the camera working correctly. A good short term solution is to lightly clean the shutter diaphragm with a cotton ball and lighter fluid, if you are able to disassemble the camera and carry out this repair yourself.
Otherwise, the camera will need to be sent to Canon to have the shutter and associated circuitry replaced.