Sony 42inch TV flickering

[reddemonic]

i've uploaded a video to show you guys. screen is not damaged. oneday just start doing this.

panel turning bad or is it the board inside?

thanks guys

https://www.youtube.com/watch?v=gh9Tujzs1es

[Diah]

Re: Sony 42inch TV flickering

which model yours Sony is ?
can you put it in stand by mode with RC?

[reddemonic]

Re: Sony 42inch TV flickering

model is 42W654A, i'll go try now.

[ReeceyBurger123]

Re: Sony 42inch TV flickering

I have seen a failed Mb in this model before never fixed it but guessing bga solder issue as the main cpu ran hot. Lets see what others think.

[reddemonic]

Re: Sony 42inch TV flickering

yes standby is working.

[Diah]

Re: Sony 42inch TV flickering

its much bad connection / soldering..take all boards apart one by one cleaning them and rebuilt again, give attention to sockets pins soldering if one pin had crack..

[reddemonic]

Re: Sony 42inch TV flickering

is this the board that is causing the problem? can i buy this ?

https://spares2repair.co.uk/sony-kdl...7284a008157eeb

so the panel is still good right?

cheers Diah and ReeceyBurger123

[Diah]

Re: Sony 42inch TV flickering

yors panel OK. but don't buy this boards.. LOL its AV boards... do what i told you first for cleaning and inspection.

[reddemonic]

Re: Sony 42inch TV flickering

ok, i'll do it this weekend. i'll report back then. thanks again

[reddemonic]

Re: Sony 42inch TV flickering

hello all, i am back.

where is the tcon board located on this TV? is it under the top black cover?





thanks :0)

[reddemonic]

Re: Sony 42inch TV flickering

i think theres no tcon board in this model. so problem has to be the main board?

so i guess replace with another main board which is this one:

https://spares2repair.co.uk/sony-kdl...7284a008157eeb

[hmendez86]

Re: Sony 42inch TV flickering

For that I think is the lvds cable......the black cable connected to the screen the socket were it goes connected it might need some soder at the side connection......try this before anything. Push a bit of pressure on the main cpu on the main board first take out the metal plate post pictures

[dick_barton]

Re: Sony 42inch TV flickering

I wonder if it's suffering from damage due to wiping the screen with a wet cloth. It may be worth doing a quick visual check of the long circuit board with the integrated tcon which connects to the lcd panel for signs of moisture/water damage.

[cliff_hootarski]

Re: Sony 42inch TV flickering

Sony.....I'm betting bad tab bonds.

[reddemonic]

Re: Sony 42inch TV flickering

nothing work. na i've tried putting pressure on all flex cables, tab bonds. etc.

i think it could this module

not my picture.


the tab bonds are soldered there so i wont able to replace it.

[reddemonic]

Re: Sony 42inch TV flickering

what are the chance is the main av board cuasing the problem? theres a cpu in there. maybe cpu gone bad like a gpu on a laptop?

should i order a new main av board?