I obtained a Sony XBR-49X900E with the following behavior:
-Powers on
-No Smart Core led code
-Backlight on when TV powered
-Display shows breathing/moving green blobs on a black background
Using the service manual, I decided to replace the TCON and see any changes. After replacing TCON the following behavior presented itself:
-Powers on
-Smart Core alternating orange/green pattern infinitely
-Backlight on when TV powered
-Display fully black
Following some threads I found here, I tested the following options.
-Disconnecting the TCON from main board resulted in static vertical color strips on display
-Attempting to flash firmware via usb was non-responsive (unable to verify any changes due to lack of display)
Here is where the title question comes into play and my major failure. I attempted to check power to the TCON and either misread the service manual or was sloppy with my probes. When checking, I definitely bridged something, caused a spark and likely damaged some other components. The following behavior now presents itself:
-Powers on
-Smart Core alternating orange/green pattern infinitely
-Backlight on when TV powered
-Display black when TCON connected
-Display no longer shows vertical color blocks when TCON disconnected
My intuition tells me I murdered the main board, which is causing the lack of color blocks when TCON disconnected. My main concern is that I killed the panel which would make any repair basically impossible. Any assistance in deciding future steps, advice, or general knowledge is greatly appreciated. First time repairing TVs so this has been a fun experience, but my overconfidence may have killed me.
-Powers on
-No Smart Core led code
-Backlight on when TV powered
-Display shows breathing/moving green blobs on a black background
Using the service manual, I decided to replace the TCON and see any changes. After replacing TCON the following behavior presented itself:
-Powers on
-Smart Core alternating orange/green pattern infinitely
-Backlight on when TV powered
-Display fully black
Following some threads I found here, I tested the following options.
-Disconnecting the TCON from main board resulted in static vertical color strips on display
-Attempting to flash firmware via usb was non-responsive (unable to verify any changes due to lack of display)
Here is where the title question comes into play and my major failure. I attempted to check power to the TCON and either misread the service manual or was sloppy with my probes. When checking, I definitely bridged something, caused a spark and likely damaged some other components. The following behavior now presents itself:
-Powers on
-Smart Core alternating orange/green pattern infinitely
-Backlight on when TV powered
-Display black when TCON connected
-Display no longer shows vertical color blocks when TCON disconnected
My intuition tells me I murdered the main board, which is causing the lack of color blocks when TCON disconnected. My main concern is that I killed the panel which would make any repair basically impossible. Any assistance in deciding future steps, advice, or general knowledge is greatly appreciated. First time repairing TVs so this has been a fun experience, but my overconfidence may have killed me.
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