Dark screen, no image (holiday disaster! Help please)
My boyfriend is on holiday for 7 days and has just discovered his canon MV700i isn't working properly. He says it switches on but the screen is dark and there is no image showing. Has anyone got a helpful solution? He is skiing and is desperate to record his holiday.
Any advice or knowledge would be grately received.
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This is usually caused by an oxidized or defective Audio/Video drum. Try running a cleaning tape through the camera. If this does not solve the problem the camera will need to be serviced by a qualified service technician.
My name is Rick and I'm a professional repair technician with over 20 years in the business and have repaired many of these. I'm semi retired and work from home with little overhead so I can keep repair costs low. If you decide to have the camera repaired, please click HERE for a directory listing that suits your needs.
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There is a well known, but little publicised problem with CCDs on many cameras. Ther was a manufacturing problem in the components. Visit the Canon web site and look up the problem. They will tell you where to send it for free repair
You need to contact your nearest Cannon Repair Centre. I had a similar problem and it was fixed for free as it is a known issue.
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Id: 37383 It has been found, that in rare case, some of the CCDs, used
in Canon digital camera and digital video cameras, have a problem that causes
abnormal image output. Free
repairs will be made for affected products in cases where it has been confirmed
that the internal CCD wiring has come off.
Make sure it is off, with the lens retracted, and remove the battery and SD card.
Remove the 11 screws holding it together
The metal shell is in two halves that can be pulled apart. The rubber socket cover flap has to be removed once one half is off. A rubber gasket round the eypiece lens may drop off - it is easily replaced.
Hold the inner chassis by the edges.
The lcd screen is held by one screw, half hidden under the wiring to the flash - remove it.
Push the wiring to one side just sufficiently to enable you to hinge the lcd screen up on its flexible printed circuit wiring loom.
Underneath you will see the back of the ccd pod, with a flexibe printed circuit wiring loom pinioned under a metal plate with two Y shaped holes filled with brown gunk, and held down by a torex screw locked with some holt melt adhesive, and two further screws inaccessible under the metal chassis to the right.
I hypothesised these were the contacts that become detatched in hot conditions, and (1) tried to shift the flexible printed circuit minutely from side to side using the hole in it (it didn't move appreciably)and (2) pressed down quite hard in the centre of the metal plate, having supported the chassis from below so as not to damage the lens.
I reassembled the whole thing and it worked immediately, with just a faint light smear down the left hand side of the image (the whole image had been completely smeared, then dark, before) which was only noticeable when photographing in dark conditions.
So I took a gamble and it seems to have worked. If it hadn't I was going to break the glue seal on the Torex screw and unscrew and then screw it up again.
Obviously doing this is on your own responsibility.