Question about Toshiba 55H70 55" Rear Projection Television

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My cable is working except there is no sound. When I turn the cable off, the tv has sound. What can I do?

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Go into your menu under Audio and turn off the SAP. There also may be that button on your remote that will do the same thing.

Posted on Jul 14, 2009

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Is your Panasonic set to monitor the HDMI input? Just like selecting a mode input on the Tv you must also select the mode input on the surround system.
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When I turn our tv on the power light comes on but the screen is still black and there is no sound.


Black Screen - Sometimes, the TV may display a black screen, now you need to check the cables whether they are properly plugged or not. Reconnecting all the cables can also work for this problem. Also, if the screen has a screen saver, check how it's set up. And, if nothing works for this issue, then there is a possibility that the lamp, rear projection, or the LCD panel may have been damaged. Now, you need to check your warranty card of your television and se your set comes under the manufacturer's warranty period. Call the customer service for technical problem and get replaced if a part demands it.


consigning no sound on your TV

You might need to do some troubleshooting tips first before calling arepair man to replace the sound IC inside the TV.


Check the volume setting. It might sound simple, but it's the best place to start. Make sure the television sound is not muted or turned all the way down using the remote or buttons on the front of the television. If the batteries are dead in the remote and the TV is muted or turned down, it might seem like the sound is broken.


Examine cables connected to the TV. Sometimes a loose connection can cause a loss of sound. Ensure all cables are tightly connected to the television and correctly inserted. Some peripherals are connected using a three-plug system and are usually labeled red, white (sometimes black) and yellow. Both the red and white leads are sound cables. Try removing all the cables (except the power) from the back of the television and turning it to TV mode, then listen for static or other sound.


Plug in headphones to the television with all cables re-attached. See if you can hear sound through the headphones. If you can, it may indicate that the TV's internal speakers are not working. If you can't hear anything through the headphones, it may be indicative of a larger problem.

Call a repairman. If at this point everything has failed to produce a sound, it's time to call in the professionals. A qualified technician should be able to fix the problem either at your home or in a workshop.

May 25, 2011 | Televison & Video

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Hi I have just purchased a Panasonic Plasma TV and Panasonic home theatre. Everything works well except for I cannot get sound coming out of the home theatre when watching normal TV. I purchased the...


Try running the audio from each video source (NOT the TV, which is an output, not a source) to the HTR digitally so you'll get the best mutichannel sound possible. Then you can turn the TV speakers (assuming it has them) off for hi-end watching.

Aug 15, 2010 | Panasonic Audio Players & Recorders

1 Answer

Can not access menu or input functions


Hi rduncan27,
I will be happy to help. 88% of LCD tv problems are with the backlight, the symptoms you described indicate a probable inverter malfunction. Lets do a simple test to check the functionality.
  1. Get the tv to a point that it is producing sound.
  2. Take a flashlight and shine it on the screen.
  3. Look very closely for a dark video image.
Let me know your findings and we can proceed from there.
Lone99star

Jan 26, 2009 | Memorex MLT3221 32 in. LCD TV

1 Answer

My high definiton is working great and everything is fine except one major thing, which is that there is no sound at all. I would like to know how i might fix this problem.


Good Day, timerwer;

HD is fine but no audio! Not knowing that if you ever had sound, have surround system, hooked to an input or RF, I would suspect that you only have the Green, Blue, and Red cables hooked to your TV and the Audio cables ( red - white ).
If you do; unplug TV (reset, reboot) from A/C outlet for 3 to 5 minutes. If still no work try these suggestions:
1. Make sure the TV's internal speakers are turned 'ON'.
2. Make sure the "BOX" ( cable, sat, u-verse) volume is turned up all the way up.

Good Luck, big IRISH.

Aug 16, 2008 | Televison & Video

2 Answers

Sony bravia intermittent sound


Yep, same problem with mine. After many trial fixes, I discovered that it's the HDMI connection. I tried two different new HDMI cables in two of HDMI ports on the TV, but still got intermittent sound. The only way I solved it was going to component cables (RGB) with a separate audio cable. Works great now. Other Web sites say that HDMI connections do not always electronically "handshake" well between devices. Not sure how this HDMI problem can be permanently fixed, but using the component connection works fine.

Feb 20, 2008 | Sony BRAVIA KDL52XBR2 Television

1 Answer

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possible arc took out the power supply or horizontal output transistor, fuse.

Feb 14, 2007 | Hitachi 50UX58B 50" Rear Projection...

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No picture channel 2-3-4-5-6-7


bad tuner or gemstar module

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