After lurking these forum for a few days and not being able to find a solution to my issue, I am starting a thread and including as much information as possible.
My Samsung PN42A400c2d does not display an image. When the power button is pressed, I here a relay click once and then power light begins to blink for a few seconds before becoming solid. During this time, the start up noise is heard but no image appears on the screen nor does the backlight power on.
On the inside, LED 1 briefly turns on before going out while LED 2 blinks until the the unit is powered off. Following other threads, I have checked the VS and VA voltages and found them to be right in the range of 207 and 54 plus/minus 2V, respectively, using a multimeter. Additionally, all of the fuses seem to be in working order. I have also confirmed that I can heard sound from inputs, specifically HDMI.
Originally, I thought my issue was a bad Y main and buffer so I replaced them both but have had no luck. The only weird thing that I have not been able to find anyone else having is there is a sound which I believe to be coming from the Y Main. It is a slight hum, very similar to the sound of fluorescent lights which occurs about ever 3/4 of a second and repeats the entire time while the unit is on. This sound is present when using both the old and replacement Y Main boards. I can get a video if it would be helpful to you.
At this point, I can't seem to find anyone else having these same issues so hopefully I can find help here as these forums and its users seem excellent in troubleshooting. I've attached images of all of the boards but do not see and bulging capacitors or any other visually identifiable images.
Thanks in advance and I will try to be as timely as possible with my responses to your suggestions!
My Samsung PN42A400c2d does not display an image. When the power button is pressed, I here a relay click once and then power light begins to blink for a few seconds before becoming solid. During this time, the start up noise is heard but no image appears on the screen nor does the backlight power on.
On the inside, LED 1 briefly turns on before going out while LED 2 blinks until the the unit is powered off. Following other threads, I have checked the VS and VA voltages and found them to be right in the range of 207 and 54 plus/minus 2V, respectively, using a multimeter. Additionally, all of the fuses seem to be in working order. I have also confirmed that I can heard sound from inputs, specifically HDMI.
Originally, I thought my issue was a bad Y main and buffer so I replaced them both but have had no luck. The only weird thing that I have not been able to find anyone else having is there is a sound which I believe to be coming from the Y Main. It is a slight hum, very similar to the sound of fluorescent lights which occurs about ever 3/4 of a second and repeats the entire time while the unit is on. This sound is present when using both the old and replacement Y Main boards. I can get a video if it would be helpful to you.
At this point, I can't seem to find anyone else having these same issues so hopefully I can find help here as these forums and its users seem excellent in troubleshooting. I've attached images of all of the boards but do not see and bulging capacitors or any other visually identifiable images.
Thanks in advance and I will try to be as timely as possible with my responses to your suggestions!
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