Samsung 46c8000 no picture tcon bad ?

[zomi]

Samsung 46c8000

Cable from motherboard to tcon
Had a burnt connector cable on tcon side

with new cable fails to power on
Does power on with tcon disconnected, makes meldoy etc..
backlights also power on
With tcon connected no melody.. /no backlights..

Fuses on tcon are ok..
no voltage at tcon when connected
Also tried with lvds cables disconnected

so culprit tcon or main board ?

[zomi]

Re: Samsung 46c8000 no picture tcon bad ?

Pictures

[Andrew F. Ali]

Re: Samsung 46c8000 no picture tcon bad ?

Did you replace the burnt cable with an exact replacement?....If NO then get an exact replacement and try it....If YES then disconnect the left T-CON cable to the Panel and power up TV....If the TV remains ON then Power OFF and reconnect LEFT cable and disconnect RIGHT cable to Panel from the T-CON Bd...Power up the TV..... If the TV remains ON then Power OFF and reconnect....You have a T_CON Bd problem.......toss the T-CON Bd out and replace with an exact replacement...If however when powering up with either side of the T-CON to Panel cable connected the TV shuts down then you have a bad Panel.

[zomi]

Re: Samsung 46c8000 no picture tcon bad ?

Yes replaced with exact repalcement
When trying to power on with tcon connected
Tv power comes on but does not boot to os
No voltage on the tcon..

[zomi]

Re: Samsung 46c8000 no picture tcon bad ?

Just to update
Was a bad mainboard
Sourced a replacement
Now with the back cover on and all screws tightened
The set does no switch on
Removing the ones that go to the main chaisis sometimes resolves this.

Any know areas where these are know to short
I am assuming a short as the set appears totally dead ..
when this happens.

[vinceroger69]

Re: Samsung 46c8000 no picture tcon bad ?

which screws do you mean the ones securing the mainboard down?