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Hello [Sir/Ms], My name is XXXXX XXXXX Thank you for posting your question on Just Answer! I will be happy to help you with this problem,
what year is the tv,, look on the back
ok,, read chart be careful with correct blink code
,, check again because it sounds like a bad seine board
none of these codes matches my situation.
My blinks are: 3 yellow, 2 yellow pause 1 yellow goes to steady green.
when I hit power button I hear 2 clicks like relay is engaging then disengaging and then the same blinking light sequence above and back to steady green.
Also downloaded the update from toshiba onto SD card. Seemed to take the software update but still get the same blinking light sequence above.
three yellow blinks, 2 blinks pause quick blink and then to green as soon as it is plugged in.
when I hit the power button same code.
Code does not start until the green light on siene board comes on.
i think your going to need the schematic,, if the blink code isn't relevant,, then you have some trouble shooting to do
i checked all voltages on the schematic you sent. All matched the schematic EXCEPT
PB504 pin 5, I have 5.0v instead of 4.2v
PB103 pin 22, I have 3.5v instead of 2.3v
the main is the suspect,, the seine is fed by the main,, and you found a blown component on the original,, well this is from the main its supplies,, so this is the issue,, check power also below
PB92A, pin2=0v instead of 3v
P706B, pin 3=0v instead of 2v
PB80a pin 2 =0v instead of 3v
P812 pin1, pin2 both 0v instead of 12v
P504 pin5=5v instead of 4.2v already gave you these earlier
P103 pin22=3.5v instead of 2.3v
After I received your voltage lists and as I was checking them I suspect the same.
I appreciate all the time you spent with me today and I will be sure to give you a good review.