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The left side of the screen, about 3 to 4 inches in top to bottom has darkened. You can still see some picture there, but it's quite dark. I replaced the bulb, but it didn't help. What else can I do?
Re: The left side of the screen, about 3 to 4 inches in...
It sounds like the light tunnel is falling apart. This is a repair best left to the experts, you can call 1-800-samsung to find the nearest authorized service center.
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Don't recommend replacing the light tunnel if you never had any experience with DLP optical systems. you need to pay careful attention to the way you remove any screws or you will be forced disassembling the engine multiple time to get the alignment correctly.
The dark side of the screen causes of the lamp alignment or prism glass alignment. This is critical you have to consult your LG technician to do this. But if you have any background o repair consult the service manual. Please careful not to touch the prism quarts so that you maintained the clarity of picture and brightness on the screen.
Your whole problem my freind is dryed up capacitors. You should go, if you have the technical ability to replace these capacitors, to http://servicemanuals.net, download the schematic diagram, and start replacing the waveshaper capacitors in the vertical drive circuit.
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