samsung tv ue43ru7400u dark screen problem help

[nomoresonys]

Re: samsung tv ue43ru7400u dark screen problem help

READ READ post #18 DO TEST.

[garysnooker]

Re: samsung tv ue43ru7400u dark screen problem help

Hi this a edge lit Tv can i still do that test in #18 thanks for your help

[nomoresonys]

Re: samsung tv ue43ru7400u dark screen problem help

Yes.

[nomoresonys]

Re: samsung tv ue43ru7400u dark screen problem help

easy test, make sure the tv is unplugged from power, unhook cable from powerboard to mainboard, plug power cord into powerboard, plug into outlet,
see if backlights come on and stay on, always make cable connections with tv unplugged from power to avoid and errant surges that could happen.

[garysnooker]

Re: samsung tv ue43ru7400u dark screen problem help

ok thanks i wiil give it a go

[garysnooker]

Re: samsung tv ue43ru7400u dark screen problem help

Hi there is only one power lead coming from the powerboard and its going to the mainboard so when i disconnect the lead there is no power going to anythink

[lotas]

Re: samsung tv ue43ru7400u dark screen problem help

Hi there is only one power lead coming from the powerboard and its going to the mainboard so when i disconnect the lead there is no power going to anythink

Why only one, you have two cables connected 1 - main, 2 - led.

[dskall]

Re: samsung tv ue43ru7400u dark screen problem help

If that doesn't work, you can monitor led voltage. If voltage is stable, then it's probably not backlights.

[nomoresonys]

Re: samsung tv ue43ru7400u dark screen problem help

it's cnm801 connector, unhook the cable at that connector to try that test.

[nomoresonys]

Re: samsung tv ue43ru7400u dark screen problem help

the power comes from the power cord that you plug back into the powerboard.