XBR-65X850B tv clicks on and off constantly after power is applied, the status LED turns on white like normal, getting brighter, but then the power supply clicks and the status LED goes off.
POWER_ON 3.3V constant
T-CON_ON 0V until the "off" click where it blips up to 3V then back to 0V
REG12V is 12.6V until the "off" click, drops to 0V
T-CON_VCC12V is 0V until the "off" click, where it looks like the voltage goes up, my meter tries to get a reading but it goes back to 0V too soon.
I unplugged the two ribbons connecting the main board to the TCON board which let the tv turn on. i get sound using the menu button and the backlight turns on, but i do not get the test pattern on the display, it's all black.
T-CON_VCC12V and T-CON_ON are both 0V while those ribbons are disconnected, I would assume they would need some voltage to display the test pattern on the display though?
I replaced the main board, and the TCON board, same problem.
Does this sound like a TCON, power supply, or display problem?
POWER_ON 3.3V constant
T-CON_ON 0V until the "off" click where it blips up to 3V then back to 0V
REG12V is 12.6V until the "off" click, drops to 0V
T-CON_VCC12V is 0V until the "off" click, where it looks like the voltage goes up, my meter tries to get a reading but it goes back to 0V too soon.
I unplugged the two ribbons connecting the main board to the TCON board which let the tv turn on. i get sound using the menu button and the backlight turns on, but i do not get the test pattern on the display, it's all black.
T-CON_VCC12V and T-CON_ON are both 0V while those ribbons are disconnected, I would assume they would need some voltage to display the test pattern on the display though?
I replaced the main board, and the TCON board, same problem.
Does this sound like a TCON, power supply, or display problem?
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