Hello, I just recently inherited a tv from my cousin and it is a 36in RCA (old school tv). Once I hooked the tv up with the coaxial cable I had picture and sound. After about 10 minutes I lost the picture and the screen had horizontal lines appearing sporadically. For some reason, the tv then did not recognize the channels that my cable provider offers. I shut the tv off for about an hour and tried watching the tv again. When it fired up, the picture and audio were there again. Also I was able to go up and down the channels with the remote. After about 20 minutes the picture started to become uneasy and started to turn into the horizontal lines I saw earlier. I feel like my tv is losing picture for some reason and I have no idea why this is happening. Is there something I can order to have installed to fix this problem? Any suggestions please help! Thanks kindly.
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Re: Losing picture on tv!
The ITC008 chassis is commonly riddled with poor solder connections. Good soldering station, patience and some good light and magnification and you might be able to fix it... Or you could spend a few dollars and run it into the shop and have a tech do it! It's not an expensive repair.
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If it's the TV on the picture, It would be cheaper to by a new set. I repair TV's and old school picture tubes are very hard to find and not worth the time to replace. Flat screens show better and use a 3rd of the energy.
There are two main causes for this fault. The first one is, advanced screen voltage to the screen grid of picture tube. The second one is leaky blue video output transisotr.
Just open your TV, and locate the screen control. It usually can be located with LOT [Line Output Transformer]. There will be two adjustable controls integrated to this LOT, marked as screen and focus. Out of which, the lower one will be for screen adjustment, and the upper one for focus adjustment. Just rotate the screen control [the lower one] to a little counterclockwise, so that the thin horoizontal lines on the screen just fade of. Adjustment is critical and should be done with care, and a small movement may just be enough. If it does not help you, repalce the blue video output transistor. This part can be located at the bace card [the printed circuit board fitted to the neck of the picture tube]. Locate it, replace it. OK.
The tv have a dead part call the FBT-Flyback transformer,a big black block of plastice with a red wire with a black cap hook it to the CRT-(Tv picture tube).The FBT-give the tv highvoltages to the CRT(Tv picture tube).This tv is old model of an analog tv probally can't find part for it anymore.