samsung-troubleshooting-lcd.blogspot.com I would say that the majority of the problems I see with most liquid crystal display TVs are failures relating to the PSU (power supply unit) or SMPS (switched mode power supply) board. Many times the failure symptoms will not even seem like the failure is related to the SMPS board even though it is, for instance artifacts in the video or an all white display, dim display etc. these failures and many others (that are obvious SMPS problems) like no power or intermittent shutdown can be caused by electrolytic capacitors in the PSU that have an increased ESR (Equivalent Series Resistance) due to electrolyte venting out of the capacitor when it is hot and or chemical changes that happen to the electrolyte over time that cause an increase in ESR. Often times the failed capacitors will have a greatly reduced capacitance value as well. Of course this is only an example of some of the common failures I see with these types of TVs.
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