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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Two vertical scrolling white lines, plus distortion static noise on my tv
This problem just started the other day, I am not sure what it is.
It only happens when the cable tv is used (not dvd etc). Nothing has been changed on the system, any idea how to fix this? Thanks |
#2
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nymphetamine:
Do tell us just what exactly are you talking about he please fill in the blanks...... Television?_____________ Make?__________ Model Number?__________ Chassis Number?__________ Tuner problems? Cable company problems? Does the problem exist when you feed a VCR into the television using the RF coax... and viewing the VCR on channel 3 or 4 ? -- Best Regards, Daniel Sofie Electronics Supply & Repair - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - wrote in message ups.com... This problem just started the other day, I am not sure what it is. It only happens when the cable tv is used (not dvd etc). Nothing has been changed on the system, any idea how to fix this? Thanks |
#3
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Tv is Sony KV32S20
What I know of the problem is that it only happens on most cable tv channels, not dvds or games or videos. Connecting the cable through the vcr doesn't change it, still just two slowly scrolling lines and static noise. sofie wrote: nymphetamine: Do tell us just what exactly are you talking about he please fill in the blanks...... Television?_____________ Make?__________ Model Number?__________ Chassis Number?__________ Tuner problems? Cable company problems? Does the problem exist when you feed a VCR into the television using the RF coax... and viewing the VCR on channel 3 or 4 ? -- Best Regards, Daniel Sofie Electronics Supply & Repair - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
#4
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#5
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nymphetamine:
How does the picture look when using the VCR as a tuner to select cable television channels and feeding the television with the A/V inputs? If the cable television channels look good then it is just about certain that the Sony tuner and/or IF modules are bad.... maybe cracked solder joints..... not that expensive at most shops unless a newbie do-it-yourself botched repair attempt is made first. You can either get them fixed or just continue using the VCR tuner to get your channels and view them via the A/V inputs on the television... thus not using the Sony tuner. -- Best Regards, Daniel Sofie Electronics Supply & Repair - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - snipped: wrote in message , not dvds or games or videos. Connecting the cable through the vcr doesn't change it, still just two slowly scrolling lines and static noise. |
#6
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nymphetamine:
......now some IMPORTANT QUESTIONS: How does the television picture look when PLAYING A TAPE on your VCR through the RF coax to the television on channel 3 or 4 ??? If it looks OK, the television tuner is probably OK and the fault could be the Cable TV company.... if it looks bad then the Sony Tuner or IF Block is bad... maybe cracked solder joints in those modules. How does the picture look when using the VCR as a tuner and feeding the television with the A/V inputs? If the cable television channels look good (using the VCR tuner to select them) then it is just about certain that the Sony television tuner and/or IF modules are bad. You can either get them fixed or just CONTINUE using the VCR tuner to get your cable TV channels and view them via the A/V inputs on the television... thus not using the Sony tuner. This is something that a service shop can fix for you..... not a fix for the technically inexperienced.... expensive damage to those module can easily occur if the job is botched by poor workmanship due to inexperience. I have seen similar jobs come into my shop that should have been much less than $100 that now became more than twice or 3 times that amount due to the owner trying to save some money by performing an at home do-it-yourself repair. You don't have to be a rocket scientist to do this work but you need to know what your are doing with the proper equipment and tools. At the very least, if the television needs repair you should TAKE the television to a service shop to get a repair cost estimate so you can make an intelligent repair decision with facts instead of Internet or telephone wild guesses. Best Regards, Daniel Sofie Electronics Supply & Repair - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - wrote in message ups.com... This problem just started the other day, I am not sure what it is. It only happens when the cable tv is used (not dvd etc). Nothing has been changed on the system, any idea how to fix this? Thanks |
#7
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#8
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mike wrote: Vertical lines scrolling sideways is one of the symptoms of co-channel interference. At least two possibilities 1) loose connection lets RF from local broadcast get in with the cable. 2) overload in front end, try an attenuator on the RF input. Oh, and bad cable signal, but you've already complained to the cable company yes??? mike The cable company is saying the signal is fine, and the problem just started even though nothing has changed for years. It doesn't happen in every channel, so how do I prevent the local broadcast from getting in? What is "an attenuator on the RF input" ? Thanks |
#9
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nymphetam:
.......one more time he View and switch the cable channels through your VCR tuner and feed the television with the A/V inputs, thus bypassing your Sony television's tuner. If all the channels are OK then you know that the television's tuner is bad... but if the same channels are still bad using the A/V inputs then call the cable company again and have them show you that the signals are clear on their television that they bring to your home.... maybe they need to check the signal levels and tighten connectors coming to your television and home from their "drop" at the pole. Either way you need them to check the signal with a CATV signal level meter so that no one is guessing here. To blindly add attenuators or other devices is wild guessing..... call your cable company and have them come to your home and straighten this out. This is what you are paying for. electricitym .. .. |
#10
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wrote in message ups.com... nymphetam: ......one more time he View and switch the cable channels through your VCR tuner and feed the television with the A/V inputs, thus bypassing your Sony television's tuner. If all the channels are OK then you know that the television's tuner is bad... but if the same channels are still bad using the A/V inputs then call the cable company again and have them show you that the signals are clear on their television that they bring to your home.... maybe they need to check the signal levels and tighten connectors coming to your television and home from their "drop" at the pole. Either way you need them to check the signal with a CATV signal level meter so that no one is guessing here. To blindly add attenuators or other devices is wild guessing..... call your cable company and have them come to your home and straighten this out. This is what you are paying for. electricitym . . Are in the UK? If so, then don't call the cable company to your home as they will bill you if the fault is not in their equipment. Are you using a scart connection from the cable box to your tv? If yes, then remove the aerial from your tv and see if the problem goes. If you still have the problem with just one scart cable connected to your tv and nothing else, then test it with another scart cable. If you still have the problem then you have eliminated everything except your tv and the cable company's equipment. To eliminate your tv try borrowing another tv and connecting that to your cable box. If you still have the problem then it must be the cable company's equipment and you can safely call them out to fix it. Hope this sorts out your troubles.......... |
#12
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I am in the US, and its actually two HORIZONTAL scrolling lines.
Vic wrote: wrote in message ups.com... nymphetam: ......one more time he View and switch the cable channels through your VCR tuner and feed the television with the A/V inputs, thus bypassing your Sony television's tuner. If all the channels are OK then you know that the television's tuner is bad... but if the same channels are still bad using the A/V inputs then call the cable company again and have them show you that the signals are clear on their television that they bring to your home.... maybe they need to check the signal levels and tighten connectors coming to your television and home from their "drop" at the pole. Either way you need them to check the signal with a CATV signal level meter so that no one is guessing here. To blindly add attenuators or other devices is wild guessing..... call your cable company and have them come to your home and straighten this out. This is what you are paying for. electricitym . . Are in the UK? If so, then don't call the cable company to your home as they will bill you if the fault is not in their equipment. Are you using a scart connection from the cable box to your tv? If yes, then remove the aerial from your tv and see if the problem goes. If you still have the problem with just one scart cable connected to your tv and nothing else, then test it with another scart cable. If you still have the problem then you have eliminated everything except your tv and the cable company's equipment. To eliminate your tv try borrowing another tv and connecting that to your cable box. If you still have the problem then it must be the cable company's equipment and you can safely call them out to fix it. Hope this sorts out your troubles.......... |
#13
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One more time, please read the prior posts and do EXCATLY what is said
and post the results. What happens when the vcr is connected to the Video input (not cable tuner input) on the tv set and you tune those same channels? What happens when you disconnect everything except for the cable line and send it directly to the tv set? If it is a cable company provided cable internet box, it could be causing the problem. What metal thing are you talking about coming off? Sounds like you have at least one bad cable connection that needs replaced. |
#14
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nymphetam:
Evidently we have a communication problem here..... re-read the previous reply posts by me and the reply posts by sofie and follow the exact instructions.... i.e. ..... comparing the picture on the Sony television when using the VCR's tuner to select channels and then feeding the signal to the television via the A/V inputs thus bypassing the television's tuner circuitry..... the television should not be on channel 3 or 4 for this test, it should be switched to the A/V input. If the picture is good on channels that were bad when being tuned directly by the television tuner without the VCR then you have verified that the Sony television's tuner is faulty and not the cable company. Again, read all the reply postings and conduct the various tests exactly and post the various test results so we can help you with a diagnosis. electricitym .. .. |
#15
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nymphetam:
If the coax cable is not securely grounded with the "metal thingy that came off".... that could certainly cause symptoms similar to what you are seeing.... get a new cable or a new connector "metal thing" installed correctly. nymphetam wrote: snipped: "the cable that plugs into the box, the metal thing came off, its just the metal wire in the center. once in awhile that caused a problem, but all you had to do was set it in better and everything was fine." Don't bother to perform further tests or seek additional repair solutions until the above "metal thing" is properly replaced. It is not an optional "thing". Once the connector is replaced or a replacement cable is used then you should re-read all of the reply posts by electricitym, sofie, dkuha, etc.... and perform the test exactly as posted.... reply with the results. electricitym .. .. |
#16
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Why bother with this Clown.
wrote in message ups.com... nymphetam: If the coax cable is not securely grounded with the "metal thingy that came off".... that could certainly cause symptoms similar to what you are seeing.... get a new cable or a new connector "metal thing" installed correctly. nymphetam wrote: snipped: "the cable that plugs into the box, the metal thing came off, its just the metal wire in the center. once in awhile that caused a problem, but all you had to do was set it in better and everything was fine." Don't bother to perform further tests or seek additional repair solutions until the above "metal thing" is properly replaced. It is not an optional "thing". Once the connector is replaced or a replacement cable is used then you should re-read all of the reply posts by electricitym, sofie, dkuha, etc.... and perform the test exactly as posted.... reply with the results. electricitym . . |
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