I've seen many of these problems posted here, but none quite exactly like this.
I got this TV from my inlaws as they couldn't get it to work and just went out and bought a new set.
The TV will come on, however, as the picture warms up you only see a horizontal strip about 1 to 2 inches from top to bottom right in the middle of the screen. I'm guessing there's a "curtain effect" as the set turns on because I can see something spreading out starting in the middle. About as soon as the "opening curtain" gets all the way across the screen, it'll start to go back in. Once the "curtain" meets back in the middle the set will power off.
I've found that if I hit the channel change button I can delay the TV from turning off, but once the "closing curtain" effect starts I can't stop it.
I can read the Volume bar if I start pressing the Vol + or Vol - buttons, but it will not stop the set from turning off.
After reading how to get in the service menu I tried this, and to my surprise it worked, but I still can't read anything as the screen never expands from top to bottom, it only stays in the middle in a strip left to right. The set will not turn off by itself once in service mode but I can't read any of the menus. I can see static or snow as I don't have any cable hooked up to it, but again, compressed down from the top and bottom.
I've tried making an adjustment to the "Screen" and "Focus" settings, which I can see make changes, but do not help this problem.
I found the service manual for this set but I can't really find something to relate to have a "squished" screen and it powering itself off after a few seconds.
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Re: RCA 27F520 Shutdown after a few seconds
You have lost the vertical ic and maybe resistor or capacitor.
but you also maybe loosing the horizontal ic
you will also have to check the voltages on the flyback transformer that go to those circuit's to see if they drop or are correct
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Without its remote it will be difficult to unlock it. Just try to get its remote control by contacting RCA authorised service center or any other way. Universal remote controls will not activate the following said proceedings.
Most RCA and GE TV sets use a four digit code to control the v-chip. The code reset is different depending on the model. Try each number until you find the one that works for you.
Hold down the MENU button on the remote and VOLUME DOWN button on the TV it's self at the same time for at least 4 seconds. The set won't say so, but the lock will be unlocked
Hold down the 0 (zero) button on the remote and the VOLUME DOWN button on the TV itself at the same time for at least 4 seconds. The set won't say so, but the lock will be unlocked
Hold down the MENU button on the front of the TV and the TV button on the remote at the same time for at least 4 seconds. 4- Hold down GO BACK button on the remote and MENU button on the front of the TV at the same time for at least 4 seconds.
Hold down EJECT button on the front of the TV and the MENU button on the remote at the same time for at least 4 seconds. Depending on the model, one of the methods should unlock the V-chip. Now, if desired, you can change the settings on the V-chip by going to the MENU and going to PARENTAL CONTROLS, or on some sets, going to MENU and then going to TV SETUP, then to V-CHIP SET.
The set has gone into protective shutdown. This is to prevent further damage. The most common part failure is hte horizontal output transistor. This is a 3-legged part attached to a heat sink close to the flyback transformer (part with large red wire coming out of the top). Try replacing that part.
Keep us posted.
This is a flyback problem. Thomson will not honor the installation neither will RCA. This has been going on for years. RCA and Thomson technically parted company a few years ago, but because RCA still uses Thomson parts they often have problems getting these parts when they fail, so RCA leaves it up to the TV owner to get the set repaired at a third party shop. In addition to this the Thomson parts only have a 1year warranty from the date of manufacture of the set, so it is possible for you to buy a RCA TV with Thomson parts that are out of warranty before you take it out of the store. Sad but true, the only recourse is to try to get RCA to service the set, provided that it malfunctions within the first year of purchase. I would suggest that you all take these TVs to a qualified TV repair shop to get them repaired, however, make sure the shop uses the exact OEM parts (This is important) because there are parts that come close to the original, but you or the TV shop would have to spend hours adjusting focus and screen voltages to allow the new part to work.
If you are on cable, first run the cable wire from the wall directly to the TV, eliminating any cable box and/or VCR. If channel 2 is snowy but the rest (especially 3-6) are clear, it is most certainly a cable problem and not a TV problem. The TV uses the exact same circuits for channel 2 to 6 (VHF-LOW) so if the tuner was bad and 2 was snowy, 3, 4, 5 and 6 would be snowy too. Bring a second TV into that room, disconnect the cable wire from the RCA and connect it to the second TV. Is channel 2 on the second TV as snowy as it was on the RCA?
You have a shutdown problem. The 3 times is a "3 strikes and your out" RCA feature that says there is something latching the set up. You will have to have a technician look at it. In this case it might not be worth it.
You apparently have a high voltage arc.
Possibly the anode lead to your picture tube.
Also the flyback transformer could be arcing.
If you're not experience with tv repair, you need to have a tech check it for you. The circuits operate at very high voltage and if you get into it you can get a possibly fatal electrical shock.
Be careful !!!
I have the same problem with my tv and I posted my problem on experts.com and got a response back saying that I have a spike in my line and its tripping a breaker within the set and that since its a 32" tv, it's worth taking it in for a $100-$200 repair.