No signal on tv, then xbox shuts down on its own

been having the same problem with one of my Xbox One Slim, turn on takes about 30second to 1 minute an then it turns off i thought it was my daughter as she put a nickle inside the disk drive, i open it up an clean everything but still the same, gonna
try what the other ambassador said tonight .

I was having the same issue and this procedure fixed my xbox one S. February 11, 2020

thank you very much

Is it on the good, ventilated place? Link. Put some compressed air in it. Maybe is overheating. This all doesn't sound good.
Please try this:

1. Power off your console, and then unplug the power cord to ensure that the console is completely powered off.

2. Wait 30 seconds, then plug the power cord back in.

3. Press and hold the BIND (controller sync button located on the left side of the console or bottom right if a one S or one X) and the EJECT button and then just press the Xbox button on the console once.

4. Continue holding the BIND and EJECT buttons for 10-15 seconds.

5. Listen for two “power-up” tones a couple of seconds apart. You can release the BIND and EJECT buttons after the second power-up tone.

6. The console should power up and take you directly to the Xbox Startup Troubleshooter.

7. To reset your console from the Xbox Startup Troubleshooter, use the D-pad and A button on your controller to select Reset this Xbox.

9. When prompted, select Keep games and apps. This option will reset the OS and delete all potentially corrupted data without deleting your games or apps.

If that doesn't work, try another power cord or plugin. Maybe it is the fan or power supply if that is a hardware failure. Do you have a warranty? If this is a hardware failure you can register your device for the repair here.

I wish you the best of luck friend.

It is very important that you make the shut down procedure first. You can do it by powering the console wait 10 secondes and then hold the power button on the console until it shutdown itself. Unplug the power cord for 30 secondes and resume the procedure
as above.

im gonna try this tonight thanks