Go Back   Badcaps Forums > Troubleshooting Hardware & Devices and Electronics Theory > Troubleshooting Computer Displays
Register FAQ Calendar Search Today's Posts Mark Forums Read

Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 02-22-2020, 12:41 PM   #1
New Member
Join Date: Feb 2020
City & State: Berlin
My Country: Germany
I'm a: Knowledge Seeker
Posts: 3
Question LG 29EA93 - No video


i've here a LG29EA93 monitor that no longer shows a video signal.
The strange thing is that the menu is working without any problem. I can make settings, switch input source, reset to factory and so on. Fully functional except the input video signal. I've tested all sources - all with the same issue.
When i connect it to a pc the monitor is correctly recognized (name, resolution), the monitor shows "No signal" and go to "energy saving mode". After shutdown it turns on immediately and shows "No signal" again. This is a endless loop "No Signal" -> "Energy saving" -> Turn On
I've already cleared the NVRAM via service mode menu. The monitor also displays "EDID OK" for all input sources - So i think the EDID EEPROMs should be also fine.
I've also tested all DC-DC converters on the board - All voltages are fine.
The logic board has a TUSB3410 USB to UART chip that is directly connected to the video scaler (STDP9320). I tried to listen to it but got no data (Debug mode in the service menu was activated) Perhaps i do it wrong..

Now I am rather at a loss.
Maybe someone can help me? :-)
Tom83_Elec is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump Technical Forums 2003 - 2021
Powered by vBulletin ®
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
All times are GMT -6. The time now is 01:38 AM.
Did you find this forum helpful?