Sharp LC-26DV24U normal then white screen

[jdoncouse]

Have a Sharp LC-26DV24U that after about 4 minutes or so and even more random than that the screen will go white.. i've seen video on replacing the Q413 transistor and the F404 part so i'm asking if one of yall think it's one over the other possibly since i dont think the mainboard is the problem because it does show proper video at first. Thanks ahead of time this forum is pretty darn amazing btw... josh

[newtothis]

Re: Sharp LC-26DV24U normal then white screen

Pics of boards...

[jdoncouse]

Re: Sharp LC-26DV24U normal then white screen

umm sorry here's the power board that i'm talking about http://postimg.org/image/b0muawovb/
and the two parts i'm talking about are in that picture *the q413 transistor and the f404 blue with red stripe part
http://postimg.org/image/x7ugvjorj/

and the mainboard http://postimg.org/image/fd5hl7ur1/

[jdoncouse]

Re: Sharp LC-26DV24U normal then white screen

bump..... anyone?

[budm]

Re: Sharp LC-26DV24U normal then white screen

Check the DC voltage on the fuse when you get the picture and when the screen turn white.
The one I fixed here had white screen (no voltage feeding the T-CON board).
http://s807.photobucket.com/user/bud...?sort=3&page=1

[jdoncouse]

Re: Sharp LC-26DV24U normal then white screen

ok the f404 fuse is getting 12.77v when normal screen shows .. then shows 13.13v when white screen pops up.. i changed the q413 transistor for the hell of it since i had one and still a no go

[budm]

Re: Sharp LC-26DV24U normal then white screen

That means the load (T-CON) board stops drawing current. Check the voltage right at the SMD fuse on the T-CON board. also re-seat the cable between the main board and the T-CON.

[jdoncouse]

Re: Sharp LC-26DV24U normal then white screen

tried to re-seat the cable did no good.. so i guess i'll have to take nearly the whole thing apart to check the tcon board.. i'm looking online to see if i can even find one and i'm having no luck either with that either i find all 3 other boards but not the tcon board..?

[jdoncouse]

Re: Sharp LC-26DV24U normal then white screen

ok i feel so noob which is the smd fuse on this tcon board? http://postimg.org/image/mtt0ewgyf/ http://postimg.org/image/dw2wtuvxt/ http://postimg.org/image/ze2blnb2r/ http://postimg.org/image/b1my7ic0l/

[tom66]

Re: Sharp LC-26DV24U normal then white screen

V260B1 panel... common problem with int white screen is tabs... have done three of these (found in LG, Panasonic and Sanyo re-badge), soon to do a 4th...
http://www.youtube.com/watch?v=mMo3NBGLwH0