Hi all,
I am helping a friend with their Samsung PN58C550G1F Plasma. According to him, the TV shut off during a thunderstorm and hasn't worked since. When plugged in, a red light appears on the front of the TV and the power button responds. The screen does not light up (not even a dim grey light as mentioned in many posts). Instead, there is an occasional clicking sound and the TV will flicker a white color and shut off immediately. It repeats this indefinitely. During this time, the power button no longer responds and there is no image of any kind. You have to unplug the TV to halt the clicking / flickering and afterward there is still an audible hum from the power board. There are two green LEDs on the logic board (LED2000 and LED2001) that alternate blinking.
I have been reading all over the internet for information about how to diagnose the problem, but I have very little experience with electronics and am just going off what I can learn from forum posts.
Having taken the back of the TV off, I have checked all of the capacitors and do not see any bulges. The Vs and Va values tested from the power board match what is printed on the label (Va 55, Vs 209). It took me a very long time to find the test point for the V scan (the label says Vsc -200) on the Ysus board but I did find a capacitor labeled "Yscan" that reads -198.
I have yet to find a test point for Ve on the Xsus (printed as 90v on the label). If anyone can point me in the right direction for its location it would be super appreciated.
For what it's worth, all of the values I've read from the DMM are peak values when the TV clicks, and then they slowly dissipate.
I have attached photos of the layout of the TV as well as individual boards. Can also take close ups of anything if needed. Thanks for any help!
I am helping a friend with their Samsung PN58C550G1F Plasma. According to him, the TV shut off during a thunderstorm and hasn't worked since. When plugged in, a red light appears on the front of the TV and the power button responds. The screen does not light up (not even a dim grey light as mentioned in many posts). Instead, there is an occasional clicking sound and the TV will flicker a white color and shut off immediately. It repeats this indefinitely. During this time, the power button no longer responds and there is no image of any kind. You have to unplug the TV to halt the clicking / flickering and afterward there is still an audible hum from the power board. There are two green LEDs on the logic board (LED2000 and LED2001) that alternate blinking.
I have been reading all over the internet for information about how to diagnose the problem, but I have very little experience with electronics and am just going off what I can learn from forum posts.
Having taken the back of the TV off, I have checked all of the capacitors and do not see any bulges. The Vs and Va values tested from the power board match what is printed on the label (Va 55, Vs 209). It took me a very long time to find the test point for the V scan (the label says Vsc -200) on the Ysus board but I did find a capacitor labeled "Yscan" that reads -198.
I have yet to find a test point for Ve on the Xsus (printed as 90v on the label). If anyone can point me in the right direction for its location it would be super appreciated.
For what it's worth, all of the values I've read from the DMM are peak values when the TV clicks, and then they slowly dissipate.
I have attached photos of the layout of the TV as well as individual boards. Can also take close ups of anything if needed. Thanks for any help!
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