LG OLED Protection Features: TPC, GSR and Logo Dimming

Answer first

Keep LG's documented OLED Care protections enabled for normal mixed use. If the screen dims unexpectedly, first determine whether the cause is a large bright image, an unchanged scene, a logo/static region, Energy Saving, or the source device. These systems can overlap.

“TPC,” “GSR” and “ASBL” are common enthusiast/service terms, but LG does not publish a complete consumer specification for their detection algorithms. Exact behavior and service-menu availability vary by model and firmware.

Understand the protection functions

Depending on model and region, LG OLED Care can expose features such as:

• Screen Move/Screen Shift: shifts the image subtly to spread wear from persistent edges.
• Logo or static-region brightness adjustment: reduces luminance around detected persistent elements.
• Screen saver or no-signal behavior: limits an unchanged display when content stops.
• Pixel cleaning: compensation maintenance intended to manage panel uniformity over time.

Use the names and instructions in the current manual for the exact TV. Do not repeatedly run manual pixel cleaning as routine maintenance unless LG's guidance for that model calls for it.

ABL is the common name for power/thermal limiting when a large area is bright. TPC/ASBL is associated with dimming during images judged static. GSR is a service-menu term linked by enthusiast documentation to persistent bright/static regions.

A paused dark scene, a white spreadsheet and a news logo can therefore produce different behavior. A single hidden toggle is not a universal “auto-dimming fix.”

One diagnostic sequence

1. Document the complete state

Record exact model suffix, firmware, input/app, SDR/HDR/Dolby Vision, picture mode, OLED Pixel Brightness, Peak Brightness, Energy Saving, AI Brightness, Logo Luminance and source output. Photograph user-menu settings before changes.

2. Separate area from elapsed time

Resize an unchanged bright document for a few seconds. Immediate area-linked output indicates ABL. Then hold a moderate scene at constant area and time gradual dimming. A delayed response that recovers after major motion is a different branch. Avoid long static stress patterns.

3. Compare source and mode

Reproduce the same movie/game using an internal app and external player where possible. Confirm actual HDR type and selected language/track. Reset only the affected picture context if its settings are unknown. One app or one forced-HDR output may be responsible.

4. Neutralize supported automation

Temporarily disable Energy Saving and AI Brightness in consumer menus, keep room light fixed and repeat. Restore preferences later. Leave Screen Shift and Logo Luminance enabled while testing whole-scene behavior.

5. Update and restart safely

Install only stable public firmware from the TV or exact LG support page. Restart TV and source normally, verify settings were not reset, and rerun the same timed scene. Do not interrupt updates or attempt unofficial downgrade.

Supported alternatives for films, PC and games

Films

Use Cinema or Filmmaker Mode in controlled light and verify whether the title is SDR, HDR10 or Dolby Vision. Reduce reflections rather than maximizing output. If a long dark scene dims, compare another player and bring up a menu only to document recovery. Keep the timestamp and report repeatable false detection to LG. Do not raise Black Level, Dynamic Contrast or copy white balance; those alter the image without correcting detection.

For paused films, use the player's screen saver or stop playback during long breaks. A pause overlay is safer than leaving a bright subtitle/menu fixed indefinitely.

PC work

Set a moderate calibrated/comfortable SDR white level; use HDR only when needed. Choose accessible dark or gray themes, auto-hide static taskbars where practical, vary window placement and enable aggressive OS display sleep. Screen savers are secondary to actually turning the display off. Keep a dark wallpaper, but remember it does not reduce load from a maximized white app.

Use Windows SDR Content Brightness for SDR apps inside HDR rather than TV black level. For color-critical full-screen white work, accept lower sustained luminance or use a display designed for that workload.

Games

Use Game Optimizer and complete HDR calibration after selecting the final tone-mapping mode. Enable HUD opacity, dynamic HUD or hide options supplied by the game; move between titles/content and avoid leaving pause maps unattended. Use console/PC sleep timers. A fixed HUD that dims locally is not the same as VRR near-black flicker or ABL from a bright snow level.

Do not use OLED Motion Pro as a protection fix; it changes motion persistence, brightness and possibly flicker. Frame caps address VRR cadence, not static wear.

C1/C2 and documentation limits

C1/G1 and C2/G2 use different webOS generations. Record the full model suffix and firmware before comparing reports; a change described for one generation is not proof of the same behavior on the other. Do not promise a universal timer, firmware cure or rollback path.

LG professional-display documentation names TPC and GSR, but does not establish the detection thresholds or service-menu behavior of a consumer C1/C2. A delayed change is a diagnostic clue, not proof of a specific algorithm.

Factory menus contain model-specific values. Changing them can affect operation and protection; it is not a normal calibration step. OLED Control can operate supported settings but cannot prevent panel wear or guarantee a service outcome.

Automatic maintenance and when to contact LG

Temporary image retention can appear after a high-contrast static element and fade with normal varied use. Burn-in is permanent uneven aging: pixels repeatedly driven harder no longer match surrounding output. A photograph alone may not distinguish them immediately, so stop the static source, allow the television's automatic standby maintenance and reassess with normal content.

Do not loop manual Pixel Cleaning. LG provides model-specific guidance because compensation is a maintenance process, not an eraser for every artifact.

Short compensation can run after accumulated use when the TV enters standby. Longer Pixel Cleaning is intended for defined conditions. Disconnecting mains immediately after every session can prevent scheduled maintenance. Leave the TV in normal standby unless LG instructs otherwise.

Menu paths differ by webOS generation. Use the exact manual rather than one universal “OLED Care” route.

Escalate when a repeatable low-motion scene dims abnormally across independent sources after user-menu audit, official firmware and restart. Provide exact timestamps, before/after video, mode and firmware. Also contact LG for persistent retention or fixed dark patches visible across normal varied content. Ask for supported diagnosis/service, not hidden-menu instructions.

FAQ

Does disabling TPC/GSR remove ABL?

No. Bright-area power limiting is a different mechanism.

How often should I run manual Pixel Cleaning?

Follow LG’s instructions for a persistent symptom. Let the TV manage automatic standby maintenance; manual cleaning is not a daily preventive step.

Can careful settings eliminate wear?

No. Moderate luminance and varied content reduce repeated static exposure, but do not eliminate cumulative OLED aging.

Sources

• LG — How to prevent image retention or burn-in
• RTINGS — Real-life OLED burn-in test (secondary)
• LG Professional: TPC/GSR terminology (professional display, not a consumer firmware specification)