Mulja tv repair portal

Equipment Repairs => LCD TV forum => Topic started by: zica on August 23, 2012,10:06:26

Title: Samsung LE46M51BX scrambled picture (snowy)
Post by: zica on August 23, 2012,10:06:26

Hi!
Have problem with my Samsung LE46M51BX/XEE. Picture is colored snow.
Seems to be a common problem, that many have the problem.
People have changed main AV Board and cured the problem, but does
anybody know were on AV Board the fault is?
I've checked the voltage on main AV board and conectors.

Here's a video on the fault i have (not my video)
http://www.youtube.com/watch?v=lJwAZxPzV0Q&feature=related

Title: Re: Samsung LE46M51BX scrambled picture (snowy)
Post by: zica on August 23, 2012,10:18:23

Here's a picture of the AV Main Board. BN41-00630B
http://img571.imageshack.us/img571/808/cimg0173mc.jpg

And a picture of my screen
http://img846.imageshack.us/img846/2347/cimg0170m.jpg

Title: Re: Samsung LE46M51BX scrambled picture (snowy)
Post by: jurq on August 23, 2012,16:56:22

...BGA RAM problem, next to the scaler STP02....

Title: Re: Samsung LE46M51BX scrambled picture (snowy)
Post by: zica on August 24, 2012,12:58:41

Thanks mate for the tip. I will order a new BGA Ram.

Title: Re: Samsung LE46M51BX scrambled picture (snowy)
Post by: jurq on August 24, 2012,16:45:03

This is rather soldering problem of this IC...
Ideal solution is reballing...

Title: Re: Samsung LE46M51BX scrambled picture (snowy)
Post by: zica on August 26, 2012,14:19:04

Reballing didn't help. Now waiting for a new ic

Title: Re: Samsung LE46M51BX scrambled picture (snowy)
Post by: zica on September 09, 2012,13:47:31

After change of BGA Ram, the set is now up and running  :13:

It was very sweet, that the BGA came allready prepared with lead balls.
That made my job so much easier  :72:

Thanks again jurq