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Weird brightness balancing on Sharp LC-42SB55E LCD TV

post #1 of 4
Thread Starter 
Hopefully this ends up in the right subforum - the sheer amount of them are staggering. :3

I have a Sharp LC-42SB55E LCD TV, which I purchased some time before Christmas. It's generally been working fine except for a few oddities and quirks that I came across, and one of them is really making my satisfaction with the device drop.

It has some form of "brightness balancing" that you can't disable anywhere. Except it's not "balancing" as much as "exaggeration".

Whenever scenes get dark, the TV gradually lowers brightness further, so that often stuff gets too dark to see. And likewise, when scenes get bright it raises brightness. In audio terms, loud sounds would become louder and quiet sounds illegible. Raising the brightness setting just moves it to the upper end of the gradient, making bright stuff gets really bright and dark stuff grey (and equally hard to see as earlier). This has lead to much frustration in PS3 and 360 games, where dark-against-dark scenes are common.

At first I thought this was a pure bug. I mean, perhaps the developers thought to make a "brightness normalization" feature and they just botched a logic check someplace, making it work in reverse. But from what I can tell by reading the manual and doing some Google roadwork, it doesn't seem to support any easy way of upgrading its software. There is a 'Current software info' tab in the settings, but Googling the terms there turn up mostly blank, with the occasional Russian site match.
Code:
Version:
DVB_SHARP_DLH
LC_42SB55E_V2.03

PQ Version:
0.15_0701
Is this a known "feature" LCD TVs can have? Should I take it to my retailer and ask for a firmware upgrade, and hope that isn't such a cheapo TV that it has such functionality removed?

I live in Sweden, and at least on the Swedish/European Sharp site all support pages eventually say to contact whoever you bought it from "and they'll be happy to help you." So there's no way to ask Sharp support, and I *truly* doubt that I'll find that level of expertise at the local store.

I appreciate any insight I can get - this TV lets me down more every day.
post #2 of 4
Find the setting saying something like "dynamic contrast" or "active contrast" and disable it

Boky
post #3 of 4
Thread Starter 
Quote:
Originally Posted by Extreme_Boky View Post

Find the setting saying something like "dynamic contrast" or "active contrast" and disable it

Boky

Yes, but there is no such setting.

The Picture section of the menu looks like the following;
  • Smart Picture (presets)
    • User
    • Cinema
    • Sport
    • Vivid
    • Hi-bright
  • Contrast: 0-100
  • Brightness: 0-100
  • Color: 0-50
  • Sharpness: 0-10
  • Tint: -32 - +32
  • Colour temperature
    • Normal
    • Warm
    • Cool
  • Picture format
    • Automatic
    • Super zoom
    • 4:3
    • Movie expand 14:9
    • Movie expand 16:9
    • Wide screen
    • Subtitle zoom
  • Noise reduction: on/off

"Smart Picture" options are basically presets for brightness/contrast/etc, and setting it to User doesn't help.

The only other menu section of note is "Features", but it only has Timer, Auto lock, Subtitle, Subtitle language, HDMI overscan and Common Interface in it.
post #4 of 4
I have the same Tv with the same PQ Version ( BTW, is it updatable ?) and I have the same problem! It happens because of a very stupid "feature" called "Dimmer", that should decrease Backlight bleeding, and improve the pass between scenes..

Do you have any solution ? i didn't find information about update..

Thanks
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