Good Day, remicarlson;
This is not the easiest problem to solve. I will give some ways to troubleshoot you TV for today and for future.
I would though recommend that you seek an
authorized service center to do this.
HERE ARE THE THINGS TO CHECK:
1. Red status LED, self-diagnosis error 44, check for open F9A06 on the Power PCB part # 283P128050 on the Power PCB 2. Red lamp LED, self diagnosis error 34. Check for 5-volts DC at J-9 connector pin 1 and 2 on the Engine Driver PCB if missing replace the Power PCB part # 930B921002 3. LED stops blinking after 70 seconds of plug in but will not power on. This model is equipped with a keyboard lock feature, this can be mistaken as a no power condition. To unlock the keyboard press and hold the "menu" button on the front panel for 10 seconds 4. LED stops blinking after 70 seconds of plug in but will not power on. Check for 3.2 volts DC at connector LE pin 3 and 4 on the Control PCB, if low suspect problems with the switches/buttons on the Control PCB part # 935D776001 5. LED stops blinking after 70 seconds of plug in but will not power on. Keyboard is not locked and key inputs at connector LE pin 3 and 4 check good. Suspect the E2P PCB part # 934C121001 6. (LED does not stop blinking after plug in) Disconnect the
USB connector from the card reader to the front from the Chassis, if the LED stops blinking after 70 seconds replace the Card Reader part # 299P271010. 7. (LED does not stop blinking after plug in) Disconnecting the
USB connector from the Card Reader did not help. Remove connector FC from the
FMT PCB and plug the unit in, if the LED stops blinking after 70 seconds with FC removed suspect a problem on the
FMT PCB (part # 930B924002), if the LED keeps blinking with connector FC removed suspect a problem on the DM PCB (part # 934C116002). 8. (LED does not stop blinking after plug in) On the DM PCB (part # 934C116002) check C81A2, C81A3, C81B3 and C81B4 (1000
uFD, 16V, 105C), if any are bad, replace all of them with part # 181P734030 (680
uFD, 16V, 105C). See Service Tip VS-78A 9. (LED does not stop blinking after plug in) On the
FMT PCB (part # 930B924002) check C8F19, C8F21, C8F22, and C8F27 (16V 1000
uFD 105C), if any are bad, replace all of them with part # 181P734030 (680
uFD, 16V, 105C).
I hope this was helpful.
Good Luck, big IRISH.
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