Good evening to all,
I'm attempting my first LCD TV repair, an Emerson LC320EM8 that I bought at a garage sale yesterday. I downloaded the manual from Funai but don't see any information on power LED error codes. The power LED immediately is red upon applying AC. When attempting to power on, there are two green blinks then it returns to solid red. Any error code information or if you see anything suspicious in the pictures, I'd appreciate any feedback. I searched on Emerson and Funai in the forums to see if there's much info. and didn't find any related threads.
I disconnected the different board loads (inverter, TCON, ATI-based digital, speakers) to see if the behavior changes. No change in symptoms. I also noticed an audible short duration buzz when removing AC after a power on button cycle, somewhere in the AC/DC conversion section of the power supply/video out board, but haven't been able to pinpoint the component.
I don't see any bulging capacitors (mostly Nichicon), nor any burnt or damaged resistors/diodes/ceramic caps/semiconductors. There is some flux residue on the bottom side in a few spots, but again, nothing that catches my eye as a potential problem.
I have a handheld DVM and a scope and am willing to probe but am also without schematic, so any pointers are greatly appreciated. Thanks.
-Adam
I'm attempting my first LCD TV repair, an Emerson LC320EM8 that I bought at a garage sale yesterday. I downloaded the manual from Funai but don't see any information on power LED error codes. The power LED immediately is red upon applying AC. When attempting to power on, there are two green blinks then it returns to solid red. Any error code information or if you see anything suspicious in the pictures, I'd appreciate any feedback. I searched on Emerson and Funai in the forums to see if there's much info. and didn't find any related threads.
I disconnected the different board loads (inverter, TCON, ATI-based digital, speakers) to see if the behavior changes. No change in symptoms. I also noticed an audible short duration buzz when removing AC after a power on button cycle, somewhere in the AC/DC conversion section of the power supply/video out board, but haven't been able to pinpoint the component.
I don't see any bulging capacitors (mostly Nichicon), nor any burnt or damaged resistors/diodes/ceramic caps/semiconductors. There is some flux residue on the bottom side in a few spots, but again, nothing that catches my eye as a potential problem.
I have a handheld DVM and a scope and am willing to probe but am also without schematic, so any pointers are greatly appreciated. Thanks.
-Adam
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