If your using digital cable it will only record channel 3 or 4 depending on what your cable box is set to...In order for it to record different channels it needs a cable source plugged directly into it. You will only be able to record standard cable channels 1-125. If it's digital cable forget about... you can only record it with channel 3/4 a solution to this would be using a 2nd digital box.. "auto-programming" may be limited even with a 2nd cable box. If your only using standard cable 1-125... you can use the TV/VCR button it will switch between the tuner of the TV & VCR allowing you to record while you watch a different show... keep in mind this won't work for digital channels which if I'm not mistaken comcast has already converted all channels to digital even basic.
Try unplugging power to the unit for at least 10 minutes or more then plug it back in.. it should try to automatically setup everything. If not manually set the time first then make sure if it has a option to switch from ANT / CABLE that it's set to cable if you have it connected to a cable system. Now try auto scan/store channels.
The video heads are a large silver cylinder inside the machine.
I will warn you against using a cloth or anything to clean then as they have a small gap on them and if any dust gets in there it could make the problem a lot worse.
Your best bet is to search google or some where for a video head cleaning tape, they should be fairly cheap these days.
If that doesn't make much improvement then unfortunatly the head is probably going faulty which would need to be replaced by a audio visual engineer.
Sounds like the guideposts need realignment to center the tracking or something got bent in the tape jam removal, check the tape path!. Also could try a take apart cleaning of the head with a piece of paper and some alcohol.
Your best course of action is to contact CONSUMER DIRECT which you can access online or via telephone number 08454 04 05 06 Monday to Friday 0800 to 1830 and Sat 0900 to 1300, it's UK government funded so it shouldn't cost you anything apart from the phone call and nothing online.
Hi Amit Sharma, try replacing the two fuses that don't work
Replace them with fuses OF THE SAME VALUE, if you put more amperage, you run the risk of damaging your Panasonic Plasma TV TH42PZ700U
If you do not respond, look for a specialized technical service
Greetings Franco Dosil
Hola Amit Sharma, pruebe reemplazar los dos fusibles que no funcionan
Reemplacelos por fusibles DEL MISMO VALOR, si pone de mayor amperaje, corre el riesgo d3e perjudicar mas su TV Panasonic Plasma TH42PZ700U
Si no responde, Busque un servicio tecnico especializado
Saludos Franco Dosil
Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/ Blinking codes details to many popular brand TVs are given. Surf the site with patience. If blinks continue without any pause, the main board is faulty. Counting of number of blinks to Philips TVs is entirely different to that of other brand TVs. It is not a direct count procedure. The site have details about how to count the number of LED blinks [Fault Codes] to Philips brand TVs are given; along with details of the faulty circuit location.
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The question is ambiguous from the standpoint of signal strength or television settings. If the signal strength drops the television wont do anything till it drops below a point that it pixelates. Then you will see big squares with blotches of color and the picture appears jerky. If that is not present, it is a good thing. The television settings are a matter of personal taste.