I have a Sony 42in TV that is ten years old. My kids frequently play video games on it and have it in VHS mode. Today, the TV on/off button blinks four times then stops and repeats. There is no picture or sound. We have tried unplugging the TV, but it continues to do the same.
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Here is the manual for your TV. I see a Game Mode when referring to Picture control, but I'm guessing you are trying to get it to switch the the RCA input for Video/Audio on the front of the TV for your game console. Doesn't look like there is anything on the TV specifically, as it references the remote to press "Game" mode. But I would try scrolling down through the channels. Sometimes TV's have the auxiliary input below channel "1" or "0".
the only way to turn i to the input is by pushing the button "input" or "game" on your remote. "input 1" is the back connectors and "input 2" is the front connectors. "GAME" is also the front connectors but it turns that "game mode" on that is in the picture settings. suggest you read the manual that came with the tv too. it explains this all in there with pics and stuff. if you lost the manual here is a link to it on there website. http://www.symphonic.us/pdf/om/ST420FF.pdf
Had problem checked by local outfit called "Circuit Pro"; their analysis was compatibility. Actual answer was that the Toshiba required a better quality input from "any" VHS source. I finally took a "less than perfect" VHS tape with me when I returned the Toshiba TV to the store and demonstrated the problem to one of the TV sales people. He played the VHS tape through a display VHS/DVD player to three different brands of TV. The picture was often "black screen" on a Toshiba, but was merely poor quality on the other two brands. I upgraded to a Sony KDL26M4000 from the Toshiba 26AV502U.
You need to bypass your A/V tuner for your video connections (if possible). Plug your video directly into the TV and audio into the tuner. This will also give you a cleaner signal/picture as it does not have to processed by your tuner BEFORE it goes to your tv. Think of it as cutting out the middle man. Your tuner is best left for powering your speaker and not controlling your video despite all of the available connections in the back of it.
I would also get rid of your VHS and cassette players as they are dead technology. Clean up your system and remove the clutter. This will lessen your chance of getting interference. Good luck!!
Sounds like the high voltage is marginal.
My experiance is to not put money into a TV that is over ten years
old. TVs stress out their electronic components worse than almost
any other electronic product. After 10 years, there are so many
parts that are ready to fail that your are probably wasting your money
trying to get any more life out of it.
Another option is to wholesale replace the main board by sending it to Module Exchange at 972-298-1212,
or PTS Electronics 800-844-7871 ptscorp.com.
Be careful on buying a new one though. Often times, these new
technology ones are much worse. Always Google the model number of
the set you intend to buy and add the word 'repair' or 'complaint' to
see if it is one of the many models that are customer service
nightmares being produced by even the most reputable companies today.
Hope ya fix it!
It definitely does not seem to be a problem with the Picture Tube. More like a cold solder. It is definitley not a job for a layman. Also, get a good technician to have a look, as locating cold solders is a labourous and time consuming process. It could also be possible that the main DC filter capacitor is getting dry, and may require replacement.