Forum Discussion

aspidoscelis's avatar
aspidoscelis
Channel Surfer
3 years ago
Solved

Unable to change sharpness from 20 on tcl 4 series latest roku update

Same problem. I see the sharpness setting, but it isn't modifiable.
  • aspidoscelis's avatar
    aspidoscelis
    3 years ago

    Ah. I think I found the solution. You can't change the sharpness setting while anything is plugged in to the HDMI port. All the other settings, yes. Sharpness, no. I wish they'd just tell us so in the documentation!

    Apparently, changing the other settings for an HDMI input can also result in sharpness being unmodifiable even when there is nothing plugged in. I assume a reset of some kind would fix that, but since it's got four HDMI ports and I'm only using two, it's easier to just move the cable.

RokuNimfa-C's avatar
RokuNimfa-C
Retired Moderator
3 years ago

Hi aspidoscelis, 

Welcome to the Roku Community. 

We'd like to know more about the issue you are seeing so we can best assist you. For clarification, do you have a Roku TV? Are you seeing any error messages or notifications when trying to make changes? Have you tried restarting your Roku TV to see if it helps? 

Have you tried taking a look here in our Support resources and following the steps to get help: How to improve image quality using picture modes on your Roku TV

Keep us posted on how it goes.


Regards,
Nimfa

aspidoscelis's avatar
aspidoscelis
Channel Surfer
3 years ago

Or, in reference to this web page: https://support.roku.com/article/115007365648

"Advanced picture settings. The following settings can be adjusted.

  • Dynamic contrast: Manually adjust backlight level for the entire screen
  • Backlight: Adjust peak backlight level of your TV screen
  • Brightness: Adjust how dark black sections appear
  • Contrast: Adjust intensity of white parts of the image
  • Sharpness: Adjust how sharp or soft edges appear
  • Color: Adjust how intense colors look
  • Tint: Adjust to get satisfactory skin tones
  • Color Temperature: Adjust how blue or red the image appears"

Dynamic contrast & color temperature—don't show up in the list at all, and I don't think they ever have, for me.

Backlight, brightness, contrast, color and tint—they're all in the list, and I can modify their values.

Sharpness—it's in the list, but I can't modify the value.

  • aspidoscelis's avatar
    aspidoscelis
    Channel Surfer
    3 years ago

    Ah. I think I found the solution. You can't change the sharpness setting while anything is plugged in to the HDMI port. All the other settings, yes. Sharpness, no. I wish they'd just tell us so in the documentation!

    Apparently, changing the other settings for an HDMI input can also result in sharpness being unmodifiable even when there is nothing plugged in. I assume a reset of some kind would fix that, but since it's got four HDMI ports and I'm only using two, it's easier to just move the cable.