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| Thread ID: 73092 | 2006-10-06 23:40:00 | TV Interferance. | Trev (427) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 489713 | 2006-10-06 23:40:00 | How can you till whether the interferance is caused by something wrong with the TV or interferance from some device whether in your place or from a neighbours place. Things I have tried. Renewed cable between socket and TV. The interferance is not so bad when signal put through video recorder. Interferance still there when playing video tapes either through the TV RF input or the rca input ( I think thats what you call it). When I play a DVD the picture is perfect. The TV is still watchable with the interferance but just annoying. I live line of site of the transmitter which is between 5 and 10 miles away. It is there on all free to air channels as well as Prime which I have a VHF aeriel for. Don't have Sky. TV is a Sony 29 inch CRT of about 8 years old gets used about 2 or 3 hours a day. I think it is called a T29. Trevor :) |
Trev (427) | ||
| 489714 | 2006-10-07 00:03:00 | Your own place is easiest to look at first . (When your interference detector is a 29 inch TV set, it's not very portable) . Things to try turning off: Computer . ADSL modem/router Compact fluorescent lamps . Chargers for cell phones and other toys . All of these often use switchmode power supplies, which can be very noisy . In theory, a TV set should reject all RF except the channel it's tuned to, but nothing's perfect . And some noise sources radiate at all frequencies . See if you can pick up the noise with an AM/ FM portable radio . That might lead you o a culprit . What sort of inteference is it? Lines on screen (stationary or moving), "noisy" noise on screen, noise on sound? |
Graham L (2) | ||
| 489715 | 2006-10-07 01:30:00 | Have tried most of those things Graham. The interference is a bit hard to discribe but I well give it a go. About a quarter of the left hand side of the screen from top to bottom has flickering little white dots while the rest of the screen has flickering horizontal lines of distortion about 1 inch long. When it gets really bad you sometimes here a crackling noise throught the speaker. I have had this problem on and off for about 3 years. It had disappeared for about a year and came back about last Monday night and has been there most nights. Trevor :) |
Trev (427) | ||
| 489716 | 2006-10-07 03:10:00 | If the interference is still there playing video tapes, via rhe RCA connector AND the vido tapes were pre-recorded ones (not recorded at your location), then the problem is internal to the set. If however, the tapes were recorded at that location, and external interference was present, then naturally there will be interfenerence seen, it will have been recorded on the tape. That it's not present on the DVD (which at this stage we don't know of the connection method) leads me to suspect external interference. Have you checked the antenna connections, renewed the antenna coaxial cable or done anything to the antenna to try and remedy this? |
godfather (25) | ||
| 489717 | 2006-10-07 03:13:00 | Disconnect your aerial, then play a tape through the RF input socket (is your DVD on the RF or an AV input?) and see if the interference is still present. If it is, it could be from inside your TV, expecially if it doesn't move on the screen and just stays fixed in the same place. The other key issue is whether it is the same on all channels VHF and UHF. Give us the answer to that too. Post the results and we'll take it from there. I have, oh, about 35 years experience in tracing interference sources, that should be enough. Tweak'e is on the ball too if he comes on line. Cheers Billy 8-{) |
Billy T (70) | ||
| 489718 | 2006-10-07 04:39:00 | What does the interference look like? I just did a quick google, this might help you: www.stevelarkins.freeuk.com |
pine-o-cleen (2955) | ||
| 489719 | 2006-10-07 04:52:00 | DVD is connected by AV connector. Prime is on UHF and still get the interference. Still get interference when playing video tape back through AV connectors. Well get back to you on other suggestions. Trevor :) |
Trev (427) | ||
| 489720 | 2006-10-07 06:39:00 | Tonight the interference is there. I played a video tape and the interference wasn't there. I'm pretty sure about a couple of weeks ago when it was there when I played a video tape the interference was there. I have switched off all electrical appliances and it is still there. If it is coming from an appliance etc not in my place how do you determin where it is coming from. Just another thought the interference is not so bad tonight as other nights could it be caused by atmospheric conditions. Trevor :) |
Trev (427) | ||
| 489721 | 2006-10-07 21:51:00 | You have avoided my comment above, that if it is interference, and you recorded the tape, then the interference will have been recorded on the tape. The test would only be valid if the tape was not recorded by you? To eliminate the TV however, do you have a friend that could lend you a small set to try? Have you checked the antenna connections? |
godfather (25) | ||
| 489722 | 2006-10-07 22:32:00 | Sorry Godfather, I have thought about doing that but at the moment the TV seems alright (Bathurst) touch wood. Trevor :) |
Trev (427) | ||
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