In short
An LG OLED HDR crash is usually software/firmware or HDMI handshake — not the classic click-off of the power supply board.
Update webOS + app, try another player, deep color/HDMI mode, Dolby Vision vs HDR10.
Software checks
Before hardware:
- webOS update
- App/stick firmware
- Other HDMI player
- Deep color off briefly
- Other HDR format
When hardware
Only with reboot loops/dead set: turns off alone / repair. Related: HDMI no signal.
AmparioWeb
We focus on power supply boards/mainboards. Pure HDR crash: software first. Support; dead set repair.
Frequently asked questions
- Only on 4K HDR?
- Then often handshake/bandwidth/app — not the power supply board.
- Related to HDMI no signal?
- Yes — HDMI no signal.
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Power boards for LG OLED — tested under load, 12-month warranty.
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