Facing TV Problems? Ask a TV Technician.
Hi , I`m Jack and I will be helping you today
Please note that I am an independent tech. that depends on your positive rating to get paid by this website and I have no control over the phone (or other) offers , they are sent by the website ,not by me but let me know if you`d rather do this on the phone.
That being said , a few questions coming up ;
Please let me know when you are ready to proceed .
Also ,Could you please give me the tv`s model number writtenon the back cover ?
Sorry then this is not what i thought
I was thinking about tv`s hung around those machines , not built-in so i will opt out but before i do i must say that the cable`s company explanation seem a bit flaky as far as i`m concerned
A chip ???
Tell them to check their setup , i believe that it is what doesn`t cut it
Good luck and You don`t have to do anything , your question will be reposted for other techs. to see and jump in.
Hi. Most likely those TV do not have QAM or ATSC signal compatibility. They were most likely working before when they were on the coax cable (company usually still run normal analog along QAM on coax). For fiber, they obviously drop normal analog. What you now need is a signal modulator that will bring the signal out of the new cable box to coax (a full featured old VCR can do that if you don't want to buy a dedicated one, it can accept composite).
That kind of signal conversion with TVs is outside of a simple chip change on the board.
The downside of a modulator is that channel need to be selected on the modulator, so every TV can only receive all the same channel at the same time. If you want different channel you need as much tuner (a tuner being the cable box) as channel you want to select.
I see. if they work sometime, then it is not a type of signal problem. Did the signal came up before from the same terminal or was it just comming from a cable from the wall without any terminal at all?
i wonder if it is not a case of newer TV being more sensitive to the signal. If the new signal is a bit weaker, perhaps the old one just can sync on it. If they all have a cable box it would be unlikely but if they just re-route a primary signal perhaps a booster of a signal adjustment from the cable company would help. To test this you could try one problematic TV with all other disconnected (not just off, physically disconnected).
Were the box active (with their own power supply) or just a mechanical switch. Working with more box really look like they are lacking signal strenght. A cable technician would be able to tell you if the dB amount of the signal is right. Perhaps the booster was set too high or simply was not adapted to the required bandwith (in that case it can filter out many needed harmonics in the signal).
Testing disconnecting all unit except one would really help in troubleshooting this.