RCA 19" TV, made in 1985. I know its old and not worth fixing, but i hoped somebody could point me to what circuits might be causing this. I have some experience troubleshooting electronics. The picture used to be perfect, now on any channel, even with no antenna hooked up, the screen is squished into 2 oval-shaped windows that constantly scroll upwards. The picture itself stays centered on the screen, you can still see it through the oval-shaped "windows". It takes about 30 seconds for the windows to go from the bottom of the screen to the top and then wrap around back to the bottom. I can take a picture if it would help. Thanks.
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Re: Fuzzy picture, oval shaped, scrolling up slowly
I would start by checking the large filter capacitors in the power supply. I can't be sure since I'm not seeing the set, but it sounds like you're describing AC ripple. In a 20-year-old set, some of those electrolytics will be drying out. A few replacements may take care of the trouble for you.
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RCA Entertainment Series 32" Plus Gold, GEMSTAR, xbox ready has been in the shop twice so far. Transformer replaced and 6 months later the picture suddenly had horizontal white lines that gradually spaced apart more from top to bottom and it had a gray hue and fuzzy, but I still watched it for 3 months that way. Today I turned it on and about a minute later I heard a loud crackling sound coming from the back and the picture disappeared, screen went black. Is it worth fixing again? Please contact me at firstname.lastname@example.org
Your convergence amplifiers are begining to malfunction. This is not expensive However I would advise that you get a qualified TV technician to work on the set due to a chance of damaging you TV if you install the amplifiers incorrectly.
Double images and colors are blurry .Blue,red and yellow wave coming up from the bottom of the screen on the lower left and fuzzy images this is a symptom is for busted convergence IC,you must replaced this IC in order that will works better again.STK 392-xxx ICs and it's associated resistor,this resistor automatically change value,can caused truoble even though you change the ICs.If you bring this to a service center they cost you $600 to $700,but if you buy the repair kit you can save more,don't wory it is very easy because there is intallation guide including in the repair kit. Feel free to ask whatever the result... click the link for sample picture guide step by step installation;
Your ICs are bad that control the Convergence. I would quess that the ICs that they have used before have been the cheaper versions. Sanyo are the best the cheap ones only last for a while then need replacing. The sanyo chips cost considerably more than the imitation ones but are worth it in the long run.
Self test: Turn on and Press the input and menu buttons on front panel together and hold for 5 sec. after 5 sec the power LED will blink a 2 digit seq. This will let you know what error code. Count the first blinks then a short pause then the second blinks. Example 2-3, 3-4, 4-1. Let us know what it is
The flicker could be caused by a bad solder connection arcing or even a bad picture tube. If you notice the screen getting drawed in from the sides as well as top and bottom it may be in the power supply regulation circuits, but the focustat around the area of the high voltage transformer could also be breaking down. If it's over about 8 years old, I would replace it with a HDTV set. Check out the latest issue of Consumer reports for ideas. (No I don't work for them-I've just seen so many people just walk into a *Mart and pick out a TV like they were choosing a box of cerial without doing a bit of research to find one that would suit them best, that I'm trying to put out a word to the wise among us).