Samsung LE40R73BD screen blank with sound

[cvel]

Hi all I have this tv works for around 30 minutes then the screen goes off but sound still there if I turn it off then straight back on the screen is on again for another half hour. Any help much great fully received

[ReeceyBurger123]

Re: Samsung LE40R73BD screen blank with sound

What you say the screen goes off does the backlight stay on ?

[cvel]

Re: Samsung LE40R73BD screen blank with sound

Not that I've noticed just waiting for it to do it again so I can check but pretty sure it's all black

[sordids999]

Re: Samsung LE40R73BD screen blank with sound

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

[orinoco8]

Re: Samsung LE40R73BD screen blank with sound

This unit may have the same problem as mine. No backlight with sound. Similar main board from Samsung. If at all possible, check the INV signal voltage from main board. You may see it drop as the screen goes dark.