I have a LCD Samsung LE37M87BDX where the picture is black and white!
I have measured, in the main board, all of the crystals oscillators and one has 1Vdc in one pin and in the other 3,2Vdc and it is not oscillating. Do you agree that this component is defective?
Normally when I turn on the TV all the crystals will oscillate? Even if, they are associated to function that, in the moment we are not using it. Like an HDMI input.
last year i encountered by this problem that av input had problem which it shown black and white.
I survey other input ,all of them intact.
do you test other input?
According to your answer this malfunction related to all input.
i if you certainly know that one piece is bad,i think you should replace that.
Do you have any schematics of your tv board?
I am using a FLuke 123 with a bandwidth of 20MHz and the Crystal is 28MHz. On the same board I have measured correctly one off 24MHz, Should the scopemeter detect the signal of 28Mhz? I think it should with a small attenuation on the amplitude!