Samsung 400PN 40" without image (Backlight ok)

[afurucho]

Dear sir, I need help.
The Samsung Syncmaster 400PN turn lights on in the background but no picture appears.
The source had blown 470uF capacitor, the output of 12V. I took to replace all capacitors originals.
The TV turns on, turns on the lights but nis with a high noise at the power supply, do not know the origin.
I did all the measurements of voltages at input connectors from the logic board are all OK.
Someone can give me some suggestion?
Thanks sirs.
Adriano

[Pentium4]

Re: Samsung 400PN 40" without image (Backlight ok)

Did you order high quality capacitors with low ESR?

[afurucho]

Re: Samsung 400PN 40" without image (Backlight ok)

Most capacitors that are used Huang brand 105 º C. Thanks for the contact.

[selldoor]

Re: Samsung 400PN 40" without image (Backlight ok)

Welcome to the forum-
We can usually help a lot more if you please post good clear pictures of the whole chassis, and then pictures of each board, front and back (in the same orientation) and close up of connectors, (max resolution 2000x2000 and 2MB) using the manage attachments button, which is found by clicking "go advanced" under quick reply.

Please do not post inline and offsite as they slow down the loading of pages.

Examples of what is needed

https://www.badcaps.net/forum/attach...7&d=1280167246

https://www.badcaps.net/forum/attach...6&d=1280167246

https://www.badcaps.net/forum/attach...4&d=1280167246

It will be useful if you can say what the supposed fault was and a bit about yourself - skills tools etc.