# LG OLED HDMI no signal

> LG OLED HDMI no signal? Usually cable, input or AV device — checklist and when a soft PSU CTA makes sense.

## In short

**LG OLED HDMI no signal** means the selected input shows no source — often cable, wrong port, HDCP, device off, or bad sender — not automatically the **PSU** (Power Supply Unit / power board).

Check AV first. Only with a dead set, blink codes or standby failures might the PSU overlap — then [stays black](/en/blog/lg-oled-bleibt-schwarz) / [repair](/en/reparatur).

## AV checklist

Practical:

- Other certified HDMI cable
- Other TV HDMI input
- Test source on another display
- Select input manually
- Simple 1080p mode on player
- Deep color off briefly

## Soft CTA PSU

Pure AV/software: cable, settings or updates. Dead or standby LED off: [standby LED off](/en/blog/lg-oled-standby-led-aus), [mainboard or PSU](/en/blog/lg-oled-mainboard-oder-netzteil).

## AmparioWeb

We specialize in **PSU/mainboards**. Pure HDMI: [support](/en/support). Dead set: [repair](/en/reparatur) or [parts](/en/bauteile).

## FAQ

**Is the PSU dead?**

Unlikely for HDMI-only. Check AV first.

**Which cable?**

Short, certified, matching bandwidth (4K/HDR).

**eARC port?**

For soundbars; video often better on other ports. See [eARC no sound](/en/blog/lg-oled-earc-kein-ton).

**AmparioWeb?**

[Repair](/en/reparatur) if dead set; else [support](/en/support).