LCD on my Nikon D7100 is not always working. Like 99% of time not working, then it starts semi-working until it doesn't. I read that there are two options why. It could be because of a faulty LCD or something on the main board (Voltage regulator?).

faulty lcd img

This is what it looks like from the time it was semi-working, but after I disassembled it has never work again.

Connections of ribbon cables were fine. I tried re-attaching them, but no luck. I also applied pressure on multiple spots of LCD/backlight, again no luck.

Is it the LCD or the motherboard?

  • \$\begingroup\$ Looks like the LCD. Guess the screen would not work at all if the mainboard was dead but its just a guess. \$\endgroup\$
    – Arji
    Nov 23, 2021 at 21:13
  • \$\begingroup\$ But it sometimes works, so maybe not completely faulty voltage regulator or something. I just don't want to spend money on spare part and then discover that it's not the problem :/ \$\endgroup\$
    – A.D.
    Nov 24, 2021 at 15:24
  • \$\begingroup\$ when does it work? when it's hot after use? To me, that looks like a poor connection. You can get an external monitor made for video to "replace" it without as much risk or effort as a repair would imply. \$\endgroup\$
    – dandavis
    Nov 24, 2021 at 21:43
  • \$\begingroup\$ @dandavis no pattern for when it works. The camera/LCD is never hot unless left on the sun.. I disassembled it and checked, cleaned them, connected/disconnected multiple times, tried wiggle it.. I don't understand what you mean by the external monitor. Link? \$\endgroup\$
    – A.D.
    Nov 26, 2021 at 17:55
  • \$\begingroup\$ the camera has HDMI output right? they sell portable little (3-6") HDMI monitors, around $100-$200 on amazon; might be worth it if only the LCD is bad... \$\endgroup\$
    – dandavis
    Nov 27, 2021 at 3:28

1 Answer 1


So I tried my luck and bought whole new LCD..and it WORKS. So mainboard is ok.

Looks like it was a problem with moisture/water problem. It's at the bottom of the camera and maybe old seal around the LCD was not perfect. Last time it was working I visited seaside..

If you are unsure, you can remove LCD and check it thoroughly..look for rust/water damage.

lcd ribbon cable rust


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.