I have an Emerson 42in flat screen lcd. It has 3 hdmi ports, a pc port, etc. What I need is an audio out port and the only audio out port is the Digital audio out. My ps3 and xbox 360 are hooked up through hdmi and my surround sound needs the audio out port in order to receive the sound to display. THe only current way i can connect my surround sound is through the headphones port, and I hate doing this because then my tv controls the sound level and it also cuts the sound out of the tv. I would like to find a way to hook up my surrond sound using the digital audio out port so I can stop using the headphones port. Thank you

Go into TV menu, scroll down to audio, then go to digital audio out. Change to auto or optic and HDMI.

Yes, I would say that ports 3 is defective in some way.
Easiest way to test is to try a different device with the same cable and see what happens!

It will depend on the laptop's available external video ports. You can connect a VGA cable from some laptops to the VGA port on the TV. Then plug in a 3.5 mm audio cable from the headphone jack to the PC audio in port. (The audio connection is optional. You could continue using the laptop's speakers.)

Make the connections with the TV and the laptop off. You may need to enter the BIOS to enable the external video port. (It can be turned off to save power. The BIOS is accessed on boot by pressing a key (Esc, F1, Del) noted on the splash screen. For Win8 machines, you'll need to do a special restart.) Then turn on the TV before turning on the computer. The TV monitor should be automatically recognized for resolution and refresh rate. Next, if you have a Windows system, right click on the desktop (pick a spot with no icons or running programs). Click on Screen Resolution (or perhaps Graphics Properties, depending on the OS). Set the monitor to duplicate the screens or send data only to the TV screen.

I'm not sure if the HDMI ports will understand a computer signal. (Not all TVs can interpret the computer's HDMI signal; it is different than that of other set top boxes.) You can try the following connections.
If your laptop has a DVI output, use a DVI to HDMI cable (or adapter) to connect to the TV. Then connect the HDMI cable to HDMI 1 and use the PC audio connection as above.
For an HDMI output, use an HDMI cable. (You will still need the audio cable unless you can reset the audio signal to output on the HDMI port. Go to the Control Panel and then the Hardware and Sounds section. Under Sound, select Manage audio devices. Then in the Playback tab, make the HDMI audio the default.) For Display Port or Thunderbolt outputs on the laptop, you will need a DP to HDMI adapter.

If the HDMI port doesn't understand the computer signal, you'll need to use a converter to go from the computer's output to component video or to VGA. Then connect the converter's output to the appropriate port on the TV.

I hope this helps.

Cindy Wells
(To access the Control Panel in Windows 7 and earlier versions, click Start and then find the Control Panel in the right hand column. For Windows 8, press the Windows key + X (or access the Charms menu on the right-hand side (Win+C) and choose Settings). Then select the Control Panel.)

you have to change the source to HDMI

Are you sure it was HDMI for the tv? I had this problem before and it was the Direct TV box.

Reduce the resolution of the PC to 1024 x 768. This can be done by right clicking on the desktop ( not any icon ) click properties / click settings / slide the screen resolution pointer to 1024 by 768 / slick apply / Computer will ask if you want to save this setting /Click yes and then try connecting the TV to the HDMI port. Should work

so u 1st, must find a vga port on LCD or HDMI port, then u must have a right cable, to connect LCD to anything you whant (PC, Xbox; PS3, so on.
Note:(u must have the same connector kind instaled on PC,.... The LCD connector VGA/HDMI or Scart/RCA dont have compability each other.)
2nd Read the specifications on VGA Card on PC , PS3 or XBox, as same as LCD input connector (resolution range)

hey fox,
sounds to me like a connection problem. If the compaqs output is vga, you need to convert the input (tv side ) to hdmi, component, s-vidio... what ever you can find. Typically when you hook up your computer to a flat screen or such, its best to try to use the hdmi ports or the rpg. But if thats not available you need to take the outout from your laptop ( whatever type that might be and input it into your flat screen tv. If you input laptop into tv under ( eg..HDMI) then when you VIEW it you need to select the correct source on your flat screen. Such as hdmi or pcmi or rpg.I know that the do sell alot of cables that adapt from one type of connection to another. Typically only one cable is required from the laptop to the flat screen. If you think about it you are only using the flat screen as a monitor.

I highly doubt there is no sound output. Not even a headphones jack?!

If so, you can get a USB sound device.

G'luck

Had the problem. Turned out to be a defective hdmi port circuit board.