No hdmi sound from macbook pro to toshiba 40E210U

Having trouble with your HDMI port not detecting your monitors or TVs all of a sudden? Go to system preferences -- Click Display - Hold down the alt option key -- click the newly revealed Detect Displays button on the bottom right of the Display settings panel. That should solve 90% to 99% of issues if your cables and Macbook pro are good. This happens to me all the time when I try to plugin to a 4K tv at the office which is the exact same model I have at home. The one at home works while the one at the office never auto detects. If this did not fix your issue, check that your Macbook Pro HDMI port and HDMI cable ends are clean and free from debri and not damaged, double check that your HDMI cable is working on other devices, make sure your TV or display is powered ON, check that your HDMI cable is securely and fully seated, check that you're on the right input on your TV or Display, make sure the cable is not too long because HDMI has length limits depending on the cable and devices, and then force detect display again on your Macbook pro. If this still did not work, when it worked before. It's likely that your Macbook Pro, TV, or Macbook Pro HDMI port is acting up. I'd recommend taking in your Macbook Pro to the Apple store at that point to get diagnosed. Hope this helped

get the appropriate dongle to adapter from your macbook to HDMI, as your TV appears to have HDMI in. Apple sells the adapter, but it is cheaper on Amazon and other outlets.

Try and use the bluetooth: Make your T.V. discoverable(I'm sure it's under the network settings or maybe it has a bluetooth settings tab) and pair with it trough your macbook. I would personally just hook up a thunderbolt to HDMI or VGA. You could also get a apple T.V. and connect that way.

The Aspect ratio of the TV could be on the wrong setting for the image you are trying to view. Widescreen's standard ratio is 16:9 ensure the TV is not set to zoom, 4:3, or pan & scan in the picture menu of your TV.

If the picture looks normal except it's just missing the edges or looks squashed or looks like it is zoomed in from the normal image then aspect ratio is probably the cause.

Assuming you have an HDMI connection on your TV - as most do these days - you can either connect wirelessly or with wires. Here is a good guide on how to connect a mac to the tv it includes the kit you'll need to do it. Hope that helps?

From what I can see, there is no way to stream to this TV from any computer. You'll most likely have to buy an adapter cable to allow you to connect your Macbook Pro to one of the HDMI ports of the TV.

Hey, you would need a Mini display to HDMI cable and unfortunately the sound cannot be ported through the mini display port.

disconnect hdmi cable and shutdown pc, completely power it off. plug your hdmi cable back in to your pc and power it up. it should properly detect your tv. i use projector mode. tv must stay on while performing this procedure.

it sound like you did the right thing . The problem is the mac output for sound is bad or the TV input sound is bad.
try input a mp3 radio to the TV verify TV is working.
put an earphone to the mac to verify the mac out sound is working .
if both are working just tool around a little and you will get it. good luck

Later MacBook (Pro) use a mini-DVI connector that does not pass analog needed for composite or S-video. Was yours ever working? And most DVI connectors do not pass sound as seen by your cabling. You cannot detect display through RCA. You just set it in Sys Prefs :: Displays, try some other settings, although your seem right.
I have a white early-2009 MacBook and mini-DVI to HDMI adapter (monoprice <$10) and HDMI cable and have not connected the TOS-link for sound, yet--just slideshows at 1920x1080. You will get a much better picture digitally. -Ken