Intermittent static when viewing cable, cable ready problem?

[rhino720]

I have an intermittent static problem on one tv in my house. When watching cable short and annoying blasts of video and audio static occur repeatedly until I give trying to watch. Or ometimes it only happens once a day and will be days before it happens again. Two diffent cable tech say it is the tv. The other tv in the house does not have this problem. I finally switched our second tv with the one that has the problem and the static has not happened since.

The tv with the problem is a 31" Toshiba. When playing dvd's (using either the svid or composite video input) the image is perfect the static never intrudes.

If the problem was in that line (wiring or connections) then I believe the problem would occur on whatever tv was in use in that room. I am left to believe that the problem must be in the cable ready portion of the tv. Anyone know any common problems or thing I should check on the cable ready board??

I can check and replace electronics, I work on pinball machines. But I have schematics and know the common pinball aliments.

Thanks, Dug

[electricitym]

rhino: Frankly.... if the diagnosis points to the tuner module in the television, then it would be easier and cheaper for you to just use a VCR to do the tuning. Any VCR built in the last 10-13 years will be able to tune all of the cable tv channels... and if you use a STEREO HI FI VCR and feed the television via the composite video/stereo audio jacks into the A/V input of the television the result will be very good. electricitym

[rhino720]

Thanks for the quick responses.

I don't know if tuning with in VCR would help, I have digital cable and am only tuning in one channel. I also removed the digital box and experienced the problem intermittently as well.

[electricitym]

rhino: You can tune the "one channel" with the VCR's tuner.... just like you did with the television's tuner. If the problem still persists then your wiring is suspect. Try what I suggested before you so readily discount it as a valid solution. Post the results electricitym

[Mark]

take the cover off the tuner and clean the ground contacts to the cover and replace the cover

I have had the same thing happen to 3 TVs of mine

The tuner cover ground contacts get dirty and intermittent as the set heats up

Mark

[electricitym]

Joseph: yes... it has other inputs and the VCR method will work fine.

"The tv with the problem is a 31" Toshiba. When playing dvd's (using either the svid or composite video input) the image is perfect the static never intrudes." electricitym

[Joseph Meehan]

I would agree and the idea of using the VCR is a good one.

[Edwin Pawlowski]

I had a similar problem and thought it was the TV. Found out it was at the cable junction box. According to the cable tech, it will not happen on all TV as some require a stronger signal that others. I can't say it is your problem, but check the connections outside if the cable guy did not.

[Ross Mac]

My guess would be connections as others have posted. Whether at the splitter or in the set. Try testing the set at a neighbors house. If it is the set and you want to try your hand at fixing it then get a bright light and a magnifying glass and look for cracks or dark spots in the solder connections at the tuner. Usually it will be a part that runs warm and is moving back and forth when the set is on or off or maybe a single sided board without enough solder. Just heat up the connection and run some solder into any connection that looks suspicious. Also check for discolored connections. They could be the cause too but no guarantee. Please make sure to unplug the TV not just turn it off just to be safe... Another idea would be to post this on sci.electronics.repair and make sure to leave the full model number...There are some excellent techs over there and you might just have a well known bug with an easy fix.....good luck...

[Edwin Pawlowski]

If that is the case, you may also lose some digital channels if you use the VCR instead. Depends also on the bale company and what signals you get.

[Joseph Meehan]

Does the set have any inputs other than antena? That was my assumption when I supported the idea of using the tuner from another device. If you have to use the cable input then it would not be likely to help.

[Ross Mac]

Woops...you already posted it there...my mistake...

[hrhofmann]

After you awapped tvs and the problem did not reoccur, did you go back to the original location for each set, or did you leave them swapped? That is crucial to know before we make further prognoses.

H. R. Hofmann

[hrhofmann]

After you swapped tvs and the problem did not reoccur, did you go back to the original location for each set, or did you leave them swapped? That is crucial to know before we make further prognoses.

H. R. Hofmann

[hrhofmann]

After you swapped tvs and the problem did not reoccur, did you go back to the original location for each set, or did you leave them swapped? That is crucial to know before we make further prognoses.

H. R. Hofmann

[hrhofmann]

After you swapped tvs and the problem did not reoccur, did you go back to the original location for each set, or did you leave them swapped? That is crucial to know before we make further prognoses.

H. R. Hofmann

[Gene E. Bloch]

"Ross Mac" wrote in news:ZOOdndpOrtXt9dTenZ2dnUVZ [e-mail]:

Note that CRT TVs have large capacitors with large voltages that hold their charge for a long time.

An unplugged TV is not necessarily safe...

Gino

[electricitym]

good suggestion good suggestion good suggestion good suggestion

[Ross Mac]

This is true and those experienced in the electronic field would know this....The OP indicated that he knew something about electrical repair so it was not mentioned....

[Ross Mac]

Is there an echo in here??