HISENSE H55B7500UK has backlight no picture

[Diah]

Re: HISENSE H55B7500UK has backlight no picture

I m having 1 more cracked screen hisense tv(diffirent model but uses the same t con board). I tried to replace the t con board but nothing changed.

hisense when screen crack it still show some kind of image.. you said t-con are same... then test yours on this cracked screen set.... MB can some how if the VDC pin out same can be used too for testing

[snowangel27]

Re: HISENSE H55B7500UK has backlight no picture

hisense when screen crack it still show some kind of image.. you said t-con are same... then test yours on this cracked screen set.... MB can some how if the VDC pin out same can be used too for testing

My t con board s still in working condition. When i test it with the cracked screen tv, i can see pictures change during i press menu button on remote control.

[nomoresonys]

Re: HISENSE H55B7500UK has backlight no picture

Hmmm, then seems like the tcon isn't the problem.

[Diah]

Re: HISENSE H55B7500UK has backlight no picture

My t con board s still in working condition. When i test it with the cracked screen tv, i can see pictures change during i press menu button on remote control.

which model and size the cracked one?

[snowangel27]

Re: HISENSE H55B7500UK has backlight no picture

which model and size the cracked one?

H55A6250UK, same size

[Diah]

Re: HISENSE H55B7500UK has backlight no picture

then from 2 make one working LOL

[snowangel27]

Re: HISENSE H55B7500UK has backlight no picture

Hmmm, then seems like the tcon isn't the problem.

I bought the cracked screen hisense tv only £15^^
It s really good price for parts

[snowangel27]

Re: HISENSE H55B7500UK has backlight no picture

then from 2 make one working LOL

I know that but i want to know the reason how my tv happen like that and can learn more about it.

[Diah]

Re: HISENSE H55B7500UK has backlight no picture

I know that but i want to know the reason how my tv happen like that and can learn more about it.

when your screen displaying image for you.... then you will know why MB get issue.... let pray your screen working

[nomoresonys]

Re: HISENSE H55B7500UK has backlight no picture

I bought the cracked screen hisense tv only £15^^
It s really good price for parts

Indeed, that's a good bargain for a donor tv.

[snowangel27]

Re: HISENSE H55B7500UK has backlight no picture

when your screen displaying image for you.... then you will know why MB get issue.... let pray your screen working

How about checking problems and cutting ckv line?

[nomoresonys]

Re: HISENSE H55B7500UK has backlight no picture

I think I would if you haven't already, try the donor tv mainboard in yours and see if everything works ok, if so you have narrowed the issue to the mainboard.

[snowangel27]

Re: HISENSE H55B7500UK has backlight no picture

I think I would if you haven't already, try the donor tv mainboard in yours and see if everything works ok, if so you have narrowed the issue to the mainboard.

Bad news! The backlight on cracked screen tv s gone now@@
It s totally dark when i turn the tv on now.

[Diah]

Re: HISENSE H55B7500UK has backlight no picture

the BL of the cracked one... also 2 group or only one ?

show us photos

[snowangel27]

Re: HISENSE H55B7500UK has backlight no picture

the BL of the cracked one... also 2 group or only one ?

show us photos

I already brought the cracked tv to my brother's house to use the led tester test the led strips.
The whole middle strip s gone.

[snowangel27]

Re: HISENSE H55B7500UK has backlight no picture

And my TV’s led strips are all good. No one s down^^ good news

[Diah]

Re: HISENSE H55B7500UK has backlight no picture

I already brought the cracked tv to my brother’s house to use the led tester test the led strips.
The whole middle strip s gone.

one LED on the strip get open... all strip will be OFF
so you have on cracked all strips in one group... not as yours

[snowangel27]

Re: HISENSE H55B7500UK has backlight no picture

one LED on the strip get open... all strip will be OFF
so you have on cracked all strips in one group... not as yours

I already sold that cracked tv for £20 and the buyer s my brother, poor him ^^
And he said about my tv that my tv’s fault is related to the screen panel, not the main board or t con.

[Diah]

Re: HISENSE H55B7500UK has backlight no picture

.......... !!!!! how did he reach this judgment with out oscilloscope to test signal out and IN ?? this is guess and at electronic no guess

[snowangel27]

Re: HISENSE H55B7500UK has backlight no picture

.......... !!!!! how did he reach this judgment with out oscilloscope to test signal out and IN ?? this is guess and at electronic no guess

He just used the multimeter to check two buffer boards a little bit and gave me that judgment.@@