Hp 2509m picture stays on for a few seconds then goes to Black

The hp2509m is just a monitor it doesn't have the ability by itself to watch TV.whoever told you that it had this feature was misinforming you.
However any monitor connected to a computer can display video streamed from a TV station over the internet with the right software. Try a search forfor a TV aggregator on google to find one to fit your needs.

Hope this helps.... Your monitor has an inverter issue. You know it's an inverter problem when:
1. Your monitor starts normally and displays the startup/desktop screen for a while.
2. Then it suddenly goes off, leaving a blank (black) screen or a very dim display.

To fix this black screen problem, change the inverter board (based on your monitor brand). Source(s): http://lcdmonitorrepair.annics.com

You will first want to verify all the cables are plugged in securely at both ends. If they are, your monitor is likely faulty. You will want to have it looked at, or simply replace it.

The monitor driver only tells the video card which video resolutions are supported by the monitor. The video card is probably set to the wrong resolution. You can boot into safe mode, set the screen resolution to one the monitor supports, and you should be good to go. You don't actually "need" a monitor driver.

maryfoldesi1, Your monitor power supply is going into shutdown mode becauce it has detected a fault within the unit. A technician will need to evaluate it. Before doing anything visit YOUTUBE to view vid clips of "LCD monitor disassembly" and "LCD monitor repair" Also read more of my responses to other owners that have BLACK SCREEN problems and find out all your options you have open to you. You did not tell us if you can still see the Win-desktop AFTER it goes BLACK. Is it also BLANK or can you still see a faint image on lcd panel if holding a bright flashlight 1 inch from screen? lmistyrel on aim.com 12fixlouie on fixya

Contact HP at 1-800-HP-INVENT
-=/ Daft Tech /=-

Ok, another words, monitor powers up for few seconds and shuts down by itself. If green LED on the front panel turns off as well or stays on?
If stays on, then inverter turns into protection mode because of old backlight lamps.
If it turns off in same time with an image on the screen, then there are some bad electrolytic capacitors in the power supply.

Bad capcitor in the psu would cause this to squel and even pop so have it looked at you be glad you did.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620

The monitor you have has bad components on the circuit boards inside.
This is a classic problem with all LCD monitors.
I rebuild them on a daily basis so I recognize the symptoms.
I would suggest finding someone who can do component level repair on the circuit boards inside.
I also suggest not trying to repair yourself as there are many breakable components to them as well as components inside that do not like static electricity discharges.

There is probably a bad capacitor within the monitor that will not allow the picture to "hold" in the on configuration. This will need to be replaced. You can send it back to Phillips, or 17" monitors are pretty cheap these days. I would suggest a Samsung or BenQ. They both carry 3yr warranties.