baird 42 no picture

[LEEDASH]

Hello forum,may i have some assistance,I have a baird 42 inch tv,unsure on model number,It has developed a fault it switches on has sound running through hdmi source also,but show not pure black but slightly greyish white screen,the led lights are working at the rear of the tv,I have opened the back not dicoloured parts or bulging caps,board number mlt168tx and the board with hdmi and so fourth is cv109h.
could it be the tcon board at fault?

[sordids999]

Re: baird 42 no picture

Posting pictures of the back of your tv showing the boards with clear pictures may help you more with fixing your problem

[ReeceyBurger123]

Re: baird 42 no picture

Picture would be a good start.

[LEEDASH]

Re: baird 42 no picture

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[LEEDASH]

Re: baird 42 no picture

Just a update,all lights up inside,takes approx 3/4 seconds to switch on from standby,

[vinceroger69]

Re: baird 42 no picture

what happens if you dissconnect one of the top t con ribbons cables and turn the tv on? try it on both sides and see if theres a difference.

[LEEDASH]

Re: baird 42 no picture

try one then the other ? or both at same time

[vinceroger69]

Re: baird 42 no picture

sorry try one then the other

Edit do the test dick_barton suggest s first to confirm you have votage to the t con board

[dick_barton]

Re: baird 42 no picture

Check what DC voltage you have between chassis (using the black meter lead) and each side of the white ceramic fuse (using red meter lead).

[LEEDASH]

Re: baird 42 no picture

makes no difference the tcon

[LEEDASH]

Re: baird 42 no picture

Check what DC voltage you have between chassis (using the black meter lead) and each side of the white ceramic fuse (using red meter lead).

sorry what fuse ? the one near tcon connector ?

[vinceroger69]

Re: baird 42 no picture

on the t con just above the lvds cable connector on the right there a fuse there check dc voltage each side of the fuse

[LEEDASH]

Re: baird 42 no picture

stupid question does the tv have to be on

[dskall]

Re: baird 42 no picture

To test power to t-con the unit has to be on. Not just in standby.

[vinceroger69]

Re: baird 42 no picture

yes tv turned on meter set to dc volts black probe on tv metal chassis and test each side of the fuse.

[LEEDASH]

Re: baird 42 no picture

Check it out tommorrow,any ideas what it should be reading ?

[vinceroger69]

Re: baird 42 no picture

5v or 12v depends on panel used i think.

[LEEDASH]

Re: baird 42 no picture

The tcon is reading 11.94 ?

[dick_barton]

Re: baird 42 no picture

I assume you mean 11.94 volts and is that on both sides of the fuse?

[LEEDASH]

Re: baird 42 no picture

model is a ch42bair