Top 5 HDMI Issues Our Customers Face (And How to Fix Them)

HDMI technology has become the standard for transmitting high-quality audio and video signals. However, even the most advanced systems can encounter issues. Based on real customer experiences, here are the top 5 HDMI problems and how you can solve them effectively.

1. Intermittent Signal (Flickering Screen)
Problem:
The display flickers or cuts in and out.
Installation Method: HDMI cables 15meter + HDMI wall plate + HDMI 5meters

Causes:

  • Poor HDMI cable quality
  • Cable length too long
  • Signal loss

Solution:

  • Replace with a higher-grade HDMI cable (e.g. MODEL KA123, KA233PRO,KA260A)
  • Add on HDMI Repeater may boost the signal if all cables can not be changed : MODEL KA178
  • Use HDMI extenders for long-distance transmission

📌 Tip: For installations over 15 meters with HDMI wall plate, consider HDMI over IP or extender solutions, MODEL KA041PRO-W , KA128UK, KA230LITE

 

2. With Signal at First Then Device Burnt
Problem:
The screen shows for a while once everything is connected, then no signal after while ( maybe 1 week) 
Installation Method: HDMI Splitter + HDMI Splitter + HDMI Splitter 

Common Causes:

  • Signal loss / unstabl
  • Too many layers of HDMI Splitter connected 

Solution:

📌 Tip: Do not cascade more than two splitters in a solution. 

 

3. Signal loss 

Problem:
Tested no problem for individual device and cables but no signal when combine all devices in solution. 
Installation Method: Long HDMI cable + HDMI Switcher / HDMI Matrix

Common Causes:

  • Signal loss over long distance cable
  • Signal loss over HDMI switcher/matrix connected

Solution:

  • Replace HDMI long cables with HDMI extender to give stable power for the whole HDMI solution.

📌 Tip: Use commercial grade HDMI extender for this scenario to ensure power stability , e.g MODEL : KA041PRO-4K , KA041PRO

 

4. Signal Unstable
Problem:
Sometimes with HDMI display sometimes no displays. 
Installation Method: HDMI Splitter 8 port/16port + HDMI Fiber Cable & Copper cables

Common Causes:

  • uneven HDMI power distribution for the splitter , HDMI fiber cable with chipset built-in need more HDMI power to boost the signal in long distance.

Solution:

  • Replace splitter to HDMI over IP models, which allows one split to many using CAT6 cables, MODEL KA041PRO, KA041PRO-4K 

 

5. Unstable Solution 
Problem:
The whole solution works for a period of times might up to few months , but not signal after that.
Installation Method: HDMI Splitter/Switcher/Matrix + HDMI Extender (Model: KA176) 

Common Causes:

  • Model KA176 is consumer grade products which is suitable for point-to-point usage and delivery via POC ( Power over Cable) which means only one side power needed. It is not suitable for this Commercial solution. 

Solution:

  • Replace ModelKA176 with commercial grade HDMI extender to give stable power for the whole HDMI solution.

📌 Tip: Use AV over IP extender or Hdbase-T extender for this scenario , e.g MODEL : KA041PRO-4K , KA041PRO, KA194A, KA195