My tv keeps going off. seems like it does it on commercials but does it at other times too. I had a faulty DirecTV HD receiver that seemed to start the problem, but I have a different receiver hooked up to it now. but the tv is still turning off.
First make sure that the plug of the tv-device is well pluged-in and the voltage in your home is normal.if all this, is ok ,enter in the menu and check the status of `timer sleep`(if `on `than turn it `off`)
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Try lowering the brightness and contrast. Sounds like you are overdriving the picture tube. Green gun in picture tube may have a shorting element; if so no fix for that other than pic tube replacement.
It is most likely a signal issue. Bad coax connections, splitters and faulty cable are usually the culprit. Best to call your cable company and request a signal test. You may also try swapping tvs. Swap sony with viewsonic in the room where viewsonic tv is.
This is not an HDTV. However, that does not mean you cannot use it to view the HD channels with DirecTV, you just wont be able to view them in hi-def. Use the component inputs from the directv tuner and plug those into the proper component inputs of your JVC. Once you see the DirecTV picture on the screen, go into menu... setup (with the directTV remote) and make sure that the only resolution checked is 480i. DirecTV with 'downconvert' those cannels to standard def, and they will still look pretty good though the component connection...
... now, in answer to your next question: "What exactly do I need to view HDTV with DirecTV?"...
1. A television that will accept 720p or 1080i signals.
2. A DirecTV HD Tuner.
3. Any DirecTV service BUT you must purchase the HD pack so that they will 'unlock' the HD channels
4. The proper cables to hook in between your DirecTV HD receiver and your HD-capable TV/Monitor. You may use either HDMI or component video cables, so long as your TV will accept them. Tune your TV input accordingly. When using component video cables, you must also run a separate cable(s) for audio...
ps. DirecTV HD tuners do not have an RF 'out'. ("coaxial or ch3/4 connection")
Since commercials are louder volume-wise (especially with cable more than satellite), my first guess would be that you have a faulty part around the audio amplifier of the TV, and it loads the power supply or creates a high/low that tells the TV micro to turn off. Knowing what brand the TV is helps, but in any case, it probably needs to be referred to a TV repair shop for tracking the part(s) down.
The 7 blinks indicate a high voltage shutdown condition. The high voltage has exceeded 33000V. This is usually due to a faulty regulator in the power suplpy circuit. If you can solder you should be able to resolve this.
I'll look up the specific part and update this if you feel you want to try.
You can try eliminating whethor or not the receiver is actually the problem by moving it to another TV and seeing if it works on one that isn't having any problems. Or moving a working receiver onto the TV to see if it will pick up signal with a working receiver. If you don't have any receivers in your house working, then odds are something needs to be serviced outside your home, like the Dish and/or LNB.
Did DirecTV actually come out to the home and troubleshoot at the site? If not, they would have no way of knowing if it's the TV or Satellite that's causing the issue.
Check for unit posting any blink codes on the timer LED. Google "sony blinking codes" for the explanation. Try turning unit off for 4 hours to force a hard reset of your set, you need to unplug it. Sounds like a low voltage problem in the HV circuit.