Every time tv is switched on there is no picture and only sound when the rf lead is touched or removed and replaced or moved right or left when it is inside the socket itself the picture comes back will replacing the the rectangular box which houses the rf socket help
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Hello A blue screen only with no indications of video means, there is no video signal. That is no signal condition. Check the tV connected with an external antenna. Select to tuner, and see whether it receives any on air transmission. If it recevies, and you can see the picture, and the fault is with VCR only,m means that the VCR section has trouble. If there is no picture either with VCR or external antenna, the fault is with the switching IC iside the circuit board. To locate this IC and to repalce it is actually a skilled work indeed. If you have sound knoledge in electronics, you can do it by yourself. If you have, inform me. I'll send the schematic diagram [service manual] to your TV. I can't send it to you by this site, as this window does not allow me to upload PDF fies by it. If you want to get the service manual, send your Email ID to me by Fixya. I'll send a copy of it to you by return mail. OK.
The converter box receives hte digital signals and converts them into either channel 3 or 4, or into direct video (red,white,yel). The output of the converter box must go into the VCR input for recording to work. Before the conversion, the tuner of hte VCR would receive the RF signal the same as the TV. The tuner inside the VCR is an analog tuner not digital, so it needs the conversion too. Most converters will provide both the A/V signal (R/Wh/Y) and RF (coax connector).
I'm stoopid. I pressed the Audio button on the remote control and discovered that the selection was set to SAP however no secondary audio was present resulting in no audio. It's no my TV so I am unfamiliar with the remote functions.
You won't need the remote to fix what you've described - I'm certain it has nothing to do with the remote. It's probably tuner related and the tuner will have to be removed from the main board and tested. Anyway that's where I'd start first...
Next trace test the voltages to the tuner and make sure you don't have an open diode or something keeping the tuner down.
Next check the voltages at the jungle IC and ESR all the caps in that circuit. If any of this sounds too complicated I'd strongly recommend a reliable shop. They should be able to isolate the problem in an hour or two.
You already hit the nail in the head,the problem might be the actual conector loose inside the set or the tuner has loose conections to the main board,the shell of the tuner is the ground make sure the conections are solid,if you are familiar with tv service this will help but if you are not too familiar be safe and call for help,right now it should not be expensive.