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It helped me,as well! Thanks a lot! Yiannis

Pareho po ng problem how to fix po please

Thanksssss

All I did to get rid of the CHA was to clean the SD card's contacts with denatured alcohol. Now works great, again.

Wow man , you gave me a clue , i switched the sd card for another one i had and the CHA error message dissapeared inmediatly , what a relief , it was 10 pm and next day i had a wedding event to picture , i was nervous and anxious , was about to call a friend to lend me his equipment . You were a brigth ligth in my dark nigth . Thanks a lot buddy

Was ein mega Video, like ist gerne da von uns ! Mach weiter so.

Just got a D90 this year and last 2 months been having this error, thank you

😂😂😂

Ist der Tunnel aktuell geöffnet?

Thanks sir

That doesn't work for me. I don't know what to do now.

I get the CHA in the lower right hand corner. Battery charged shows 7.5 - 8.4 volts. I've charged over and over, wiggled the batter back and forth (spring loaded, before closing the battery door, pulled data card and tried to boot with battery but still same thing. I have the window on now trying to discharge battery to recharge to see if that helps. Says something about ISO-AUTO. The battery indicator at the top left of my D-90 shows full charge. I get that CHA message once I install the battery without even turning the camera on. It's immediate. I guess I have to go to the book. Everything looks great inside the battery compartment and I used some dielectric grease to no avail. Window screen is still on with CHA flashing. I know it's a false battery issue because there's no flash and I can't start video or taking single photos. I just don't get it.

Could it also mean the battery is near the end of its life?

Thanks my camera works again 👍

my camera also dont work

Thank You my camera works again. :-)

In the fall of camera nikon d90 in your camera bag with belt - stopped working mechanism for lifting and lowering the mirror (buzzing motor in the camera) the mirror is raised and did not fall, in the lens undocked suggests motor loop the focus and sharpness of the sensor (docked by unscrewing the five screws from the front of the lens in 5-mm slit sharpened matches). By clicking on the diaphragm platoon button (bottom-right), a mirror and a platoon of the top left, the motor in the camera when you press buzzed "descent" button on the display, to the left, highlights "the Err", the parameters of shutter speed and aperture is not indicated. Buckled rod finger aperture cocking lever (strongly touched, almost bent over inside the lens, on the other hand the outer cocking lever, the course was originally light) light and remain - perhaps as a result of the bar stood on the regular place as it should (nikkor 18-200), or so I thought. It's just after the fall of the diaphragm is not platoons now recharges. After transportation to the master (can be on the road vibration or impact-room master), he earned - mirror was cocked and lowered with the "aperture" button and photograph became a "Start" button. Off only active (but not burned until the fall), the lower dashboard in the viewfinder. Just do not light at all, mesh and areas of focus in the viewfinder are present, the focus area active and highlighted in red red when shooting conditions are not correspond to the ISO-exposure when the sharpness - beep is served, and the frame is black - when you press the "start", the shutter fires. About shooting parameters had to look at the small screen from the top-right (fig is not visible), or large from the back side to expose the ISO and ekspopozitsiyu, which is very inconvenient. What's the problem, the viewfinder light is working, it can other LEDs? Possible replacement of LEDs? The camera could not make out, I'm afraid not to collect back ...! Replacement LEDs monitor or cheaper to book through the viewfinder LCD Monitor ?, More to do an audit of lifting mechanism of the mirror. I do not think that the problem in the lens. When the nozzle through the Soviet lens adapter ring removed without problems, only to expose the diaphragm-focus. Push-fit lenses for a screwdriver - no comments.