Hello, another TV found on the sidewalk here.
I have a TCL 40S325-CA ROKU LED TV. The backlights turn on, I can hear the typical Roku click sound when pressing the power button (no remote unfortunately) but nothing is displayed on the screen.
Power supply:
Main board goes into standby, so no reason to suspect anything here. Backlights turn on, etc..
Driver boards:
I have 12V going on both sides of the fuse on the panel driver boards.
VGH and VGL are around 1V when powered on.
No shorts to GND on any of the test pads or any of the caps on the driver boards.
Main board:
See pictures - a number of the caps seem shorted, however they're about 90Ohms to GND. In diode mode, red probe on GND, black probe on non-GND side of the caps then I get about 0.05V.
With the TV turned on, there's about 1V on the caps.
My FLIR doesn't show any excessive hot spots on the board except for the main processor.
Thoughts? Main board toast?
I have a TCL 40S325-CA ROKU LED TV. The backlights turn on, I can hear the typical Roku click sound when pressing the power button (no remote unfortunately) but nothing is displayed on the screen.
Power supply:
Main board goes into standby, so no reason to suspect anything here. Backlights turn on, etc..
Driver boards:
I have 12V going on both sides of the fuse on the panel driver boards.
VGH and VGL are around 1V when powered on.
No shorts to GND on any of the test pads or any of the caps on the driver boards.
Main board:
See pictures - a number of the caps seem shorted, however they're about 90Ohms to GND. In diode mode, red probe on GND, black probe on non-GND side of the caps then I get about 0.05V.
With the TV turned on, there's about 1V on the caps.
My FLIR doesn't show any excessive hot spots on the board except for the main processor.
Thoughts? Main board toast?
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