Vizio led 42inch m421vt screen freezes then goes out

[tom66]

Re: Vizio led 42inch m421vt screen freezes then goes out

Cable going from the main board (with inputs) to the large board in the centre of the panel.

[madatvizio]

Re: Vizio led 42inch m421vt screen freezes then goes out

Thank you for your response,what are the lvs cables and how do I clean them,basically tired of talking to vizio right about now cos it feels like i am banging my head against a tree

ok,which are the lvs cables?should have asked that before asking how to clean them.
Thanks

[Mr Bill]

Re: Vizio led 42inch m421vt screen freezes then goes out

rubbing alcohol and q-tips

[madatvizio]

Re: Vizio led 42inch m421vt screen freezes then goes out

Did you clean the lvs cables?

how do i clean the lvs cables?

[madatvizio]

Re: Vizio led 42inch m421vt screen freezes then goes out

Did you clean the lvs cables?

Thank you for your response,what are the lvs cables and how do I clean them,basically tired of talking to vizio right about now cos it feels like i am banging my head against a tree

[Mr Bill]

Re: Vizio led 42inch m421vt screen freezes then goes out

Did you clean the lvs cables?

[madatvizio]

Re: Vizio led 42inch m421vt screen freezes then goes out

any sudgestions

[madatvizio]

Re: Vizio led 42inch m421vt screen freezes then goes out

You get edge lit, rear lit and full LED.

Difference between edge lit and rear lit is basically unnoticeable.

Difference between rear lit and full is that the brightness of each LED can be varied on the full scheme, to improve contrast ratios a bit (though, not really enough in my opinion.)

wow! never knew that.thanks

[tom66]

Re: Vizio led 42inch m421vt screen freezes then goes out

yes it is a full led tv.are there non-full led tvs?what is the difference

You get edge lit, rear lit and full LED.

Difference between edge lit and rear lit is basically unnoticeable.

Difference between rear lit and full is that the brightness of each LED can be varied on the full scheme, to improve contrast ratios a bit (though, not really enough in my opinion.)

[madatvizio]

Re: Vizio led 42inch m421vt screen freezes then goes out

was looking at pic 1,2 and 3 and it looks like some capacitors(hope am right) are busted on it,white stuff on the sides,

[madatvizio]

Re: Vizio led 42inch m421vt screen freezes then goes out

Some TVs and the design is retro fitted and sold. Meaning they replace the CCFL and inverter with LED light bar and driver board.

Ain't that some shit.

Also pic 5, bottom LVDS cable, gold contact is exposed.

what is LVDS,dont know much about this,sorry

[Mad_Professor]

Re: Vizio led 42inch m421vt screen freezes then goes out

yes it is a full led tv.are there non-full led tvs?what is the difference

Some TVs and the design is retro fitted and sold. Meaning they replace the CCFL and inverter with LED light bar and driver board.

Ain't that some shit.

Also pic 5, bottom LVDS cable, gold contact is exposed.
EDIT: NVM closer look it looks correctly seated.

[madatvizio]

Re: Vizio led 42inch m421vt screen freezes then goes out

Is this a full LED TV? That board in pic #5 looks like the driver for it as well as the LCD T-con (perhaps a two in one function.)

yes it is a full led tv.are there non-full led tvs?what is the difference

[tom66]

Re: Vizio led 42inch m421vt screen freezes then goes out

Is this a full LED TV? That board in pic #5 looks like the driver for it as well as the LCD T-con (perhaps a two in one function.)

[madatvizio]

Re: Vizio led 42inch m421vt screen freezes then goes out

pictures of the inside,what was changed is the 5th pic,the panel in the middle

[madatvizio]

Re: Vizio led 42inch m421vt screen freezes then goes out

My bet is a loose LVDS cable hooking between the main board and T-con (board attached to LCD.)

will also take a pic and let you see

[madatvizio]

Re: Vizio led 42inch m421vt screen freezes then goes out

You say they replace a panel. Was it the LCD panel or a main board replaced? If they replaced the LCD panel, then most likely the main board is at fault.

I think it was the power panel,will take a pic of the inside and telll you which ne it is

[tom66]

Re: Vizio led 42inch m421vt screen freezes then goes out

My bet is a loose LVDS cable hooking between the main board and T-con (board attached to LCD.)

[Mt.Man]

Re: Vizio led 42inch m421vt screen freezes then goes out

You say they replace a panel. Was it the LCD panel or a main board replaced? If they replaced the LCD panel, then most likely the main board is at fault.

[madatvizio]

Re: Vizio led 42inch m421vt screen freezes then goes out

gone off now