HP 27es - LED monitor - Monitor Flashing On - Off

[ant3202]

Hi Everyone

Lately I am experiencing the deja-vu incident on one of the led monitor like this.
https://www.badcaps.net/forum/troubl...lashing-on-off

The monitor is HP 27es LED Monitor
https://h30434.www3.hp.com/t5/Deskto...e/td-p/6804692

The monitor will randomly blackout and display no signal and will recover again.
Sometimes need to power and off again to restore the display but it will eventually blackout and display again.

On google, there are certain users facing this same issues, thus decided to open up and check.

DC adapter was giving correct voltages and ESR level for the caps were acceptable

Had narrowed to the possible suspects,


was thinking if this BA5N10 (TO-252) is the culprit.


FR9889 - SOP-8 power management IC Chip



Thanks ))))

[ant3202]

AL3065
https://www.mouser.com/ds/2/115/AL30...UbT1Otf39BLUL3


4616 IC

[ant3202]

Need help if anyone can refer BA5N10 (TO-252) replacement, similar or better.

Thanks

[ant3202]

Original IC:
https://datasheet4u.com/pdf-down/E/M...llianceMOS.pdf

Can this replacement works?
https://docs.rs-online.com/4b03/0900766b80d2466f.pdf

Thanks

[прямо]

The monitor will randomly blackout and display no signal and will recover again.
Sometimes need to power and off again to restore the display but it will eventually blackout and display again.

Sounds like the issue is with the graphics card if the monitor goes out with a no signal error message.

Have you tried the monitor with other computer or a game console?

[ant3202]

Hi прямо

Had tried with different hdmi devices, laptop, set top box and HDMI cables.

The symptoms were the same. The monitor source will go out randomly and to power cycle again to display.
Display will show for a short while around 3 mins and black out again, no signal.

[прямо]

You will need a scope to trace the HDMI signals on the monitor controller PCB (where the VGA and HDMI ports are located) to see if any of them is missing when the no signal symptom is happening.

Also, does it also happen with VGA input?