I installed a new lamp, but my tv doesn't come on. The lamp light keeps flashing yellow.

Have you tried a new lamp?
part# 75007111 https://www.encompassparts.com/item/7209710/Toshiba/75007111/Y-196_Lamp_62Mx19 $199.00

Lamp light blinking yellow means lamp door not installed.
Lamp light solid red and TV shut off is lamp error (did not light.)

Yellow flashing light? Did you get any picture? Bet, not!
It means: your lamp door interlock is not engaged: did you forget to turn the locking knob? Did you install lamp compartment door? That might be the only issue. Lamp timer blinks 'red", while TV works normally. Reset the timer, it's gone, along with annoying message. Yellow means: interlock or thermal protection is off. Try to repeat lamp installation procedure. then, you'll find out your mistake. don't need to remove the lamp. It would be "red", if lamp won't fire up.
good luck,
Alex.

Hi Genaro,

Blue led light lit solid and yellow led light flashes is an initial attempt of the set to re-light the lamp.Red led flashes and yellow led light solid means that the lamp won't light up that's why it only has sound without the picture.
Since you've replaced the lamp twice and still the symptoms persist, I suspected that the fault came from the ballast board and not on the lamp itself. If the ballast board gone to malfunction, there's no high voltage will produce to light up the lamp and will sensed by the processor and trigger the error code (Flashes/solid led light with color code).

To verify whether the ballast board is faulty or not, check if the lamp will lit by looking through the lamp door louvers at the rear of the cabinet upon turning on the set.
Please let me know what you will find to assist you further.

Jdvillanueva

The flashing yellow lamp light is indicating that the lamp door cover isn't installed properly or isn't contacting the door switch .

A continuous flashing red light with the word LAMP on it would definitely mean you're going to need to spend a few bucks on a new lamp....or for a few more, upgrade to a TV from this century that doesn't require lamp changes :)

start with the lamp.

you need to make sure the door is all the way tight. there is a switch there and if it is not making contact you will get a yellow status light

MAKE SURE LAMP DOOR IS COMPLETELY CLOSED,THATS WHY POWER LIGHT FLASHES YELLOW

Lamp is bad need new lamp