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Be sure all your input cables are securely attached at both ends, make sure your internal speakers are not turned off.
Reset the TV by unplugging it for 30 seconds to 1 minute.
Also if you are using a cable/satelite box reset it by unplugging it for 30 seconds to 1 minute.
Do you have sound on another input such as DVD player.
if still no audio may have defective I/O-Main PCB
Unplug,replug the tv about an hour later let the tv reset itself.Go into the tv menu,go to PICTURE go down to reset,this to reset ur tv Tuner signal board back to the factory setting.Those HDMI ports 1 and 2 should work again.Not than,ur Tuner signal board is defective,or the HDMI port 1 is shorted and dead.
There is a way to reset television. I have a jvc 42inch that was just going to main logo screen and not beyond it. If i remember correctly you unplug the tv hold power button for 5 sec on tv then let go plug in and start. If that dont work unplug and then plug and hold power button on tv for 5 sec. It is 1 of those combinations. My tv worked after that. I googled my problem and a website listed that some tvs need to be reset.
Resetting the TV If the buttons on the remote AND the buttons on the TV case do not work (channels do not change and you cannot open or navigate the menu), the TV has stopped responding. Reset the TV as follows:
NOTE: Some TVs have a reset button. If available and accessible, try using the reset buttons before using the steps below. Using the reset buttons can save time. 1. Unplug the TV power cord from the power outlet. 2. Unplug any connected devices (DVD, Set-top boxes, etc...) 3. Press and hold the TV power button for five seconds. 4. Plug the TV power cord back into the power outlet and turn on the TV. 5. Open the on-screen menu to confirm that the TV is responding again. 6. Turn off the TV and reconnect the devices. 7. Turn on the TV.
Our Samsung DVD/VCr all in one combo did a similar thing.
I used the HDMI cable for the DVD into the TV input labeled HDMI/DVD. That worked okay.
But the VCR part didn't work. At one point I got sound but no picture. Using the RCA cables in the back on another input "Component 1"
I was trying to squeeze the best picture out of the player using the S-VHS cable.
I thought it did picture only, but the Plasma seems to be more picky about input sources.
I got everything to work keeping the DVD as a separate HDMI to Plasma TV feed. The VCR was 3 RCA's Yellow (picture) red and white for stereo sound.
I then reset (toggled through the inputs to "reset" the TV.
It finally worked but I was two days mulling it over.
See if this works for you. My TV was a Panasonic Plasma, but shouldn't matter. Skip the S-VHS line and connect the inoputs with the TV off. You MAy need to go into the input of set up menu on the TV (ours had a wrench as an icon) and set the Component 1 or 2 to "VCR".