# LG OLED turns itself off

> LG OLED shuts itself off or clicks and goes dark? Often unstable supply from aging PSU capacitors — AmparioWeb repairs or supplies a tested replacement PSU.

## In short

If your **LG OLED** **turns itself off** — mid-film, after warm-up, or shortly after power-on — the panel is rarely the first suspect. Very often the **power supply** (**PSU**) collapses under load or heat.

A related pattern: the TV **clicks and goes off**. That soft relay-like sound means the start chain engages and protection drops out again — classic with aging filter capacitors.

## Typical failure pattern

Behaviour is often **intermittent**: stable in the morning, problematic after heat — or after long run-time. A short **unplug** may help briefly, then shutdown returns.

- Set starts, picture appears — off after seconds or minutes
- Click / relay-like sound, then darkness
- Worse on bright scenes or higher volume (higher load)
- Pixel refresh or standby jobs abort
- Later only blink code or total no-power

## Why the PSU is often to blame

Many LG OLED PSUs use **film capacitors** (including **820 nF**, often marked **824J 500V**). They lose capacitance over years. Ripple rises, soft-start and protection trip — the TV looks like it “turns itself off”.

Deep dive: [LG OLED TV won't turn on – 820 nF capacitors](/en/blog/lg-oled-fernseher-geht-nicht-mehr-an).

## Reading “clicks and goes off”

A single click at power-on can be normal. **Repeated clicking** with immediate or delayed shutdown points to a supply that cannot hold rails.

Software energy savers or HDMI-CEC can also power down a set — usually without a hard relay click and often with menu/timer context. Mechanical click + instant black: hardware supply first.

## Safety notice

**Mains voltage is lethal.** Open chassis and **PSU** mean dangerous voltages. **Electrolytics** can hold charge — **discharge** before measuring. **Never swap parts under power**.

Unsure? Unplug, do not open, use a workshop / AmparioWeb.

## Diagnostic pointers (high-level)

Goal: rough triage, not live debugging:

- Whether the fault is load- or heat-dependent (document it)
- Whether standby LED / blink patterns appear after shutdown
- Note model and board numbers — [Find part number](/en/nummer-finden)
- Check software timers and energy options in the menu (exclusion)

## DIY vs tested replacement PSU

Proper capacitor replacement can help — with correct parts and PSU know-how. Used boards often still carry the **same aged film caps** and return the same fault.

AmparioWeb recommends a **tested replacement PSU** or **fixed-price repair** over roulette with old boards.

## What AmparioWeb offers

AmparioWeb maps the right **PSU**, supplies tested parts and repairs LG OLED power boards at a fixed price — for self-shutdown and click-off symptoms.

Next: request [Repair](/en/reparatur) or search [Replacement PSUs](/en/bauteile). Board number via [Find part number](/en/nummer-finden).

## FAQ

**Is self-shutdown always the PSU?**

Very often the PSU — especially with clicking and heat/load dependence. Software timers and CEC exist; sorting that out is diagnosis.

**Why does unplugging only help briefly?**

Soft-start and protection reset. With heavily aged caps, stability often lasts only briefly — then the set shuts off again.

**Linked to pixel refresh?**

Indirectly: if supply collapses in standby, maintenance jobs fail. See also our timer-socket and pixel-refresh article.

**Panel or PSU?**

Panel faults more often show image issues while running. Full shutdown with a click points strongly to the supply.

**Which spare part do I need?**

Map model and EAY/EAX via [Find part number](/en/nummer-finden), then tested [Parts](/en/bauteile) or [Repair](/en/reparatur).