Electronics & Gadgets Cheat Sheet

← LCCELECTRONICS & GADGETS

No internet — one device only — Forget Wi-Fi + reconnect, or restart only that device
No internet — all devices — Power-cycle router: OFF → wait 30s → ON → wait 90s
Router on but no internet — Change DNS: set to 8.8.8.8 / 8.8.4.4 (Google) on router settings
Confirm ISP issue — CMD → ping 192.168.1.1 (router replies) but no google.com → call ISP
Slow Wi-Fi on far device — Log in to 192.168.1.1 → change 2.4GHz channel to 1, 6, or 11
Factory reset router — Hold RESET button 10–30s. Last resort — must reconfigure from scratch

★Wi-Fi channels 1, 6, 11 are non-overlapping (2.4GHz). Neighbours on same channel = congestion. Use 5GHz band for speed; 2.4GHz for range.

Picture mode: "Movie" or "Filmmaker" mode for accurate colours — NOT "Vivid/Dynamic" (oversaturated + unnatural)
Disable "Motion Smoothing" (TrueMotion/Clear Motion/MotionFlow) — makes films look like soap operas
Sound: Use external speaker via HDMI ARC or Optical. Enable HDMI-CEC to control with TV remote
Streaming device: LAN cable > 5GHz Wi-Fi > 2.4GHz Wi-Fi for stable playback
OLED TVs: Enable screen saver + auto-sleep (4h) to prevent burn-in from static logos
OTA updates: Settings → About/Support → Software Update. Run monthly

Problem	Quick Fix	If Still Fails
Battery drains fast	Auto brightness ON, check Battery settings for drain apps, close background	Battery replacement or factory reset
App crashes	Settings → App → Clear Cache. Update app. Uninstall + reinstall	Reset app preferences or factory reset
Overheating	Remove case, close heavy apps. Charge at room temp with original cable	Battery bulge = service immediately
No sound	Check volume, mute switch. Clean speaker grill with soft dry brush	Settings → Sound → Reset. May need service
Charging slow	Use original cable + adapter. Airplane mode while charging. Clean USB port	Port damage = authorised service centre
Wi-Fi drops	Forget + reconnect. Toggle Airplane mode. Set DNS to 8.8.8.8	Settings → General → Network Reset

★Monthly full restart (not just screen off) clears memory leaks and cures 60% of slow/glitch issues.

USB-C

Universal: phones, laptops, tablets. Supports USB 3.0+, Thunderbolt, Power Delivery charging

Micro-USB

Legacy Android phones. Max 18W with Qualcomm Quick Charge

HDMI 2.0

4K@60Hz. Standard for TVs, monitors. ARC port = audio return on one cable

HDMI 2.1

4K@120Hz, 8K@60Hz. For gaming monitors and latest TVs

USB-A 3.0 (blue)

5–10 Gbps transfer. Blue inside = 3.0. Black inside = 2.0 (slower)

DisplayPort

PC monitors. Supports daisy-chaining multiple monitors from one GPU port