Hello,
I have a Sony KDL-50W828B TV with sound but no picture.
What I eventually did is I disconnected 1 of the lvds ribbon cables between the Tcon and the “buffer boards”. I mean the boards that are connected to the lcd panel itself.
When I disconnect the left ribbon cable nothing happens. Only the backlight stays on.
When I disconnect the right cable, the left of the screen comes on and I have a picture.
I tested all the components on the right buffer board for shorts but I did not find any.
When I measured the voltages on the Tcon to the lvds cable I get a reading of around 1 volt.
With the lvds cable disconnected I get higher voltages around 10 volts.
So it looks like a short on the buffer board or on the right panel itself.
I learned on the internet that if you have the above symptoms the tv is not repairable because there is a fault on the lcd panel.
Is there still a chance that there is a fault on the Tcon?
Thanks for the help in advance.
I have a Sony KDL-50W828B TV with sound but no picture.
What I eventually did is I disconnected 1 of the lvds ribbon cables between the Tcon and the “buffer boards”. I mean the boards that are connected to the lcd panel itself.
When I disconnect the left ribbon cable nothing happens. Only the backlight stays on.
When I disconnect the right cable, the left of the screen comes on and I have a picture.
I tested all the components on the right buffer board for shorts but I did not find any.
When I measured the voltages on the Tcon to the lvds cable I get a reading of around 1 volt.
With the lvds cable disconnected I get higher voltages around 10 volts.
So it looks like a short on the buffer board or on the right panel itself.
I learned on the internet that if you have the above symptoms the tv is not repairable because there is a fault on the lcd panel.
Is there still a chance that there is a fault on the Tcon?
Thanks for the help in advance.
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