DELL SE2416H

[Jane]

Hello ,
 monitor DELL SE2416H
What do you think the problem, like that at the video below, is caused by?


The monitor is only pluged in to mains ( no other input) and turned on.
Anyone experienced a such problem?

[bob91343]

Some kind of oscillation, maybe due to loose mounting screws on a circuit board.

[Rasz]

glass-tcon connecting ribbon or internal glass defect, very low probability of tcon and zero probability of scaler board/input defect

[Jane]

The monitor works  from the very beginning properly but only  for  one or two seconds only.
On T-CON there is an very hot (shorted?) IC marked as SM4047 .
Anyone know what kind of IC is that?
Thanks

[Rasz]

same defect https://www.reddit.com/r/AskElectronics/comments/na3idv/trying_to_fix_my_monitor_asus_vc239h_need_help/

SM4047 is a DC converter for multiple supplies running the panel, they are also called Gamma correction buffers, VCOM generators etc.

example pinout for similar SM4053 part https://www.pinterest.com/pin/471541023488781596/
what on the tcon board

Getting hot means something is shorted, most likely inside the panel or chip on flex buffers. Replacing this chip 99.9% wont fix the issue, replacing whole panel or one of the flexes by specialized shop will, but this is uneconomical outside of Asia (India-China).

There are also hackers (india/russia/china, its a true dark art) able to figure out which line is blown and bypassing it manually - this usually results in slightly darker picture with slighly visible gamma issues, but otherwise still working monitor. Example:



TLDR: buy a new monitor.