LG L246WH-BN power on. No display

[xqoliver]

I got a monitor LG L246WH-BN. It can power up. Blue light (power) is on. But no LG Logo. No image at all after power up. So I open it. And changed two of Caps which is 3300uf 16V. It works well for four days. After that. The monitor dead again, I open it again, Changed new 3300uf 16V Caps again. Still doing something. Can anyone help me please? Thanks

[seanc]

Re: LG L246WH-BN power on. No display

What replacement capacitors did you use, what were the old ones?
Please can you post photos of the power board after reading these instructions https://www.badcaps.net/forum/showthread.php?t=1868

[xqoliver]

Re: LG L246WH-BN power on. No display

Thank you for quick reply, I will post photos later.
First time I just replaced two cheaper 3300uf 16v caps.
Then, I was feeling might the cheaper caps issue. Then I replaced two Panasonic caps which is 3300uf 25v caps in the power board now.
But monitor still does not show up. Should I replace remain those caps as well?

[retiredcaps]

Re: LG L246WH-BN power on. No display

But monitor still does not show up. Should I replace remain those caps as well?

When you find 2 bad caps, forum members here recommend that you replace all the capacitors especially if they are brands like Capxon.

Capacitors die from age, heat, and shoddy build quality. Capacitors DO NOT have to be visibly bloated in order to bad. They can be out of tolerance uF (a 1000uF measures 20uF) and/or have high ESR (ohm). A multimeter will be insufficient to test for ESR. For that you need an ESR tester which costs between $50 and $300.

Most members here will recommend that you replace ALL capacitors with reputable brands from reputable sellers. Brands like Rubycon, Panasonic, and United Chemicon are suggested. A list of recommended caps can be found at

https://www.badcaps.net/forum/showthread.php?t=2280

[Kent_Diego]

Re: LG L246WH-BN power on. No display

There are two bad caps but there are hole for three capacitors with one unpopulated. I used all three hole when I replaced them. I made a complete repair/troubleshooting video:
http://www.youtube.com/watch?v=qJhkLiMR12g

-Kent

[perrunos]

Re: LG L246WH-BN power on. No display

Same here. LG 246WH from 2008, failed September 2015.

Disassemble it and there were 2 caps clearly busted on the power supply board. Unknown brand, 2200uF, 10v, 105ºC 10mmD 24mmH.

Same as Kent Diego. Great tutorial in You Tube. Thank you man.

I also found a good photo based tutorial at : http://www.ardnut.co.uk/blog/2011/12...to-turn-on.htm

I changed only the two caps, and voila, good old LG 246 back to life.

Recommended.

[pcgeek]

Re: LG L246WH-BN power on. No display

Hi I have a LG L246wh-bn and my power supply has blown ceramic? cap C115 blue colour very small , the side that blew was the one with the rating on it , does anyone know what value it should be?

thanks for your help

[budm]

Re: LG L246WH-BN power on. No display

Can we see the pictures of the board?

[pcgeek]

Re: LG L246WH-BN power on. No display

Thanks heres some photos ive uploaded for you

http://imgur.com/gallery/OpUOP/new

[pcgeek]

Re: LG L246WH-BN power on. No display

Any suggestions?

Thanks

[vinceroger69]

Re: LG L246WH-BN power on. No display

whats the power supply part number we maybe able to locate a schematic

[pcgeek]

Re: LG L246WH-BN power on. No display

Model : LGP0024-110B

Thanks

[Taruga]

Re: LG L246WH-BN power on. No display

I have a blown capacitor that is obsolete:

http://www.digikey.com/product-searc...DEA1X3A271JA2B

(270pF ±5% 1000V (1kV) Ceramic Capacitor SL Radial, Disc)

What can I use to replace this obsolete capactor ?

[perrunos]

Re: LG L246WH-BN power on. No display

Same here. LG 246WH from 2008, failed September 2015.

Disassemble it and there were 2 caps clearly busted on the power supply board. Unknown brand, 2200uF, 10v, 105ºC 10mmD 24mmH.

Same as Kent Diego. Great tutorial in You Tube. Thank you man.

I also found a good photo based tutorial at : http://www.ardnut.co.uk/blog/2011/12...to-turn-on.htm

I changed only the two caps, and voila, good old LG 246 back to life.

Recommended.

Just to inform that the monitor keeps working after 9 years from the repair date. I changed just 2 electrolitic caps. Original manufactured date February 2008.