Cant power up yellow light blinking - Dell OptiPlex SX280 PC Desktop

Hi,

Here is a whole list for you :

Mitsubishi Blinking Codes :

Constant Green - TV is Powered On
Constant Red - Lamp Failure
Constant Yellow - DMD temp is very high
Blinking Yellow - Lamp cover is open
1 Red Blink, 6 Yellow Blinks - Color Wheel Failure
3 Red Blinks, 4 Yellow Blinks - Lamp Failure
3 Red Blinks, 6 Yellow Blinks - Exhaust Fan Not Working
3 Red Blinks, 7 Yellow Blinks - DMD Fan is not rotating
5 Red Blinks, 7 Yellow Blinks - Ballast Problem
6 Red Blinks, 6 Yellow Blinks - Lamp Missing, Bad Cable between lamp and ballast

And the Lamp cover must be here somewhere in your TV :


For more you can refer to the below link :
Mitsubishi DLP TV Blinking Code Errors Explained Overview of Each...

How many blinks? Count and notice the patterns of the blinks (3 long blinks or 1 long blink followed by two short blinks).

Remove the Power Cord, Open the Case and remove one of thememory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x onit with an ink pen. If it fails to boot then move the chip to the nextmemory slot and try rebooting. If it fails take the chip out and set itaside, then put the other chip in and try booting it in both slots. If itboots, just to verify that the chip set aside is bad, mark an x on it and putit into the open memory chip slot and try booting.If all the above fails, you problem could be your Video Card or a motherboard issue.

Yes this is sometimes called the YLOD or yellow light of death and the red light problem. You need to stop the heat build up on the main chips the GPU and the CPU.

Your options are to send it in or use a good repair guide to fix it.

blinking yellow light on the power button of a Dell system is a possible power supply issue. press the eject button on the dvd drive while the power button flashes yellow light. if the disc trays wont come out, you need to replace the power supply. hope it helps. good day.

HI, the power supply is unstable or weak. you will need to replace this failing power supply soon. it is damaged.

how old is the tv is it possible your lamp is burned out this is what a dlp screen would do.

lg air cond.multi split led lamp blink power 1 times,good sleep 2 times

The ballast is actually a switch mode power supply that powers the lamp. It is an
integral part of the light engine and is not replaceable. The light engine has a price
tag of $950. If you replaced the lamp with an after market one and not the Toshiba
lamp you can experience the same problem. Some of the after market lamps will
not fire at the same voltage as the Toshiba. The blue led will come on solid and the
yellow blinking. It will try to start 8 times then give up.

Charlie

not sure but have you checked the backup battery inside