Quote:
Originally Posted by Jeffhs
I agree. Flat screens with modules, however, will be repairable, albeit not at board level due to, as you mentioned, surface-mounted components. Most FS TVs only have three such modules and, of course, the LCD panel; when these sets develop problems, they can almost always be found on one of those modules, which of course can be replaced. The LCD display can be replaced easily enough, but the problem is that the cost of a new panel, plus the shop's labor charges, often (more often than not) equals or exceeds the cost of a brand new TV. I personally would not even bother having a flat screen (with a name I never heard of) repaired, for just that reason.
Any flat screen TV that lasts anywhere near ten years will be one for the record books, as these sets are simply not meant to last that long. Replacement of components such as burst electrolytic capacitors or capacitors with bulges (the main cause of total failure in flat screens) is beyond the abilities of most non-technical people, so when any flat screen goes bad after the warranty expires, the set will be put out for the trash and a new one purchased. I saw a Westinghouse 24" (approximately) flat screen in the trash behind my apartment last year; it wound up there probably due to a defective capacitor or even a broken screen. I couldn't tell the condition of the panel, since the TV was placed with the screen facing one of the trash barrels. My best guess is a component failed, probably a power supply electrolytic.
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The later-model console TVs I scrapped had surface-mount resistors all over the underside of their boards. Looks like certain PCBs which are so thin they're translucent even have traces running through the board, so if one of those goes bad it's game over.
I saw a flat screen set that was about 30" out with someone's trash just a couple of days ago. The entire screen was bashed in. Whether something accidentally hit it or that was what the owner did to it post-failure I'll never know. I wouldn't have picked it up even if the screen were intact.