Question about RCA TruFlat 27F520T 27" TV

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Blue screen of death

When I first turn on the tv I'll get a blue screen and it'll turn its self off in approx. 2 min. then I'll turn it back on and the same thing. Takes about 5 to 10 min. to get the picture on sometimes less.

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Re: blue screen of death

What you Have Is a Main RCA Failure you Have a Cathode to Grid Short In your Picture Tube,The Tube shorts and Tells the Miainboard to shut Down...Good Luck

Posted on Jul 19, 2007

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Re: blue screen of death

One simple test is to unplug ( while the TV is OFF) the CRT & turn the TV on. You won't see or you SHOULD NOT see anything, but if the tv does not shut down, you found part of the problem. If the TV still shuts down, that is proberly not the problem. Depending on the circuit u have to continue unpluging things [ turn TV off 1st because there are a lot of circuits that don't like surges as u unplug them while they are ON !!] & see if the TV will shut down. If the TV does not shut down, check filter capacitors 1st, 2nd check resistors that have changed shape & or color.

Posted on May 27, 2008

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Re: blue screen of death

On this model if no signal is present you normally will get a blue screen. This shutdown probably is the CRT, try adjusting the G2 slightly up or down. If the tube has changed value, resetting this will sometimes work.

Posted on Feb 06, 2008

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Dont remember the code for the remote to my television

Try with these codes. These codes are of universal remote control with Apex Digital.
015 226 037

May 10, 2011 | Apex Digital AT2702 27" TV

1 Answer

I have a 6 year old(nov 04) Sony KV-30HS420 that turns off all by itself. The screen goes to green and the picture fades to black. The sound will keep playing for a few seconds then the TV will turn itself...

If the screen goes rather bright green it is one of two things:

1. It is possible it is a shorted green gun in the picture tube, there are three of them, red, green and blue guns in neck of the tube.

2. The other possible reason is there is a problem on the small circuit board at the end of the picture tube, this model should use three IC chips, one for each red, green and blue.

Being intermittent makes it hard to tell but ask the shop if they tried the self check this set should have. With the set turned off use the original Sony remote and hit Display, 5, vol down, and power.

If the set has a self check (it should) a box will appear on the screen with up to five items with a zero to the right of each, items will be like AKB, OVP, etc, and if any have something other than a zero to the right it pinpoints what happened.

Sets with this feature record each event where something goes wrong, ANYTHING other than a 0 indicates what failure was detected.

If I was to make a guess there will be a number next to AKB, which is Anti-Kine Bias, this means the picture tube or something on the board at the end of it drew too much current and the set's shut down circuit turned the set off.

I actually fixed one of these where both the blue and red IC chips on that board were bad, needless to say, I replaced all three of them.

Any good shop would know about the self check and even if the set did not shut down in the shop the self check would point to the area where the problem is.

Let me know if you need more help or find a error code.


Dec 01, 2010 | Sony FD Trinitron WEGA KV-30HS420 30" TV

3 Answers

When we switch on our Sony Trinitron, the red light keeps flashing, audio comes on but it takes a very long time 3 min approx for the picture to show up. Also the clarity and colour of the picture has...

This could be a sign of hte picture tube failing. If you are comfortable accessing the set with teh back removed, try a screen adjustment as follows:

1) locate the flyback transformer (part with large red wire coming out the top)
2) There should be 2 adjuistments on that part labeled screen and focus.
3) turn the screen control clockwise just a bit

If the set comes on more quickly, than the tube is starting to fail. The adjustment above is a temporary "fix" that will get you time to locate a replacement only. Further adjustment will cause the picture to be washed out and may show retrace lines as well.

Hope this helps,

Aug 18, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

After tv is on for approx 20-30 mins it starts to make a loud high pitched squeal or whine. once turned off for approx 10-15 mins can turn it back on for another 20-30 mins before squeal will return....

Sounds like a problem I had with a Polaroid t.v. Take the cover off the back and look for capactors that are buldging on the top. The top should be slightly concave. If they are convex at all, you can buy new one at Radio Shack and replace them for under $5.00

Apr 10, 2010 | Emerson EWF2004 20" TV

1 Answer

Large Black Box Showing up in middle of screen.

Try and turn off the closed captioning. I had the same problem and it turned out that the closed captioning was on t1 instead of OFF. Hope this helps!!!!

Feb 19, 2009 | Zenith C27A24T 27" TV

1 Answer

Mits WS-55807 blue screen, steady green light no video

Good Day, luap356;

Look for fluid on the PCB's, if don't see any try this:

This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the input/device and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times. 1 - 2 = no error detected 2 - 1 = X-ray protect (high voltage or beam current) 2 - 2 = Short protect (short protect monitors low voltage supplies) 2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection) 2 - 4 = Vertical protect (usually loss of vertical from the source) 1. SELF- DIAGNOSIS INDICATE X-RAY. CHECK FOR A SHORTED IC5A03 PART # 270P704010 AND AN OPEN R5A73 82K ¼ WATT OFF PIN 2 OF IC5A02 ON THE MAIN PCB. 2. SELF DIAGNOSIS ERROR INDICATES SHORT PROTECT. CHECK FOR OPEN FUSES F9A04 AND F9A05 PART # 283P043090 ON THE +24 AND -24 VOLT LINES. IF THE FUSES ARE OPEN THE CONVERGENCE OUTPUT CIRCUIT WOULD BE SUSPECT. 3. SELF-DIAGNOSIS INDICATES SHORT PROTECT. CHECK FOR A SHORTED IC4B01 PART # 270P261020 (VERTICAL OUTPUT) LOADING 24-VOLT SUPPLY LINE. LOCATED ON THE MAIN PCB. Good Luck, big IRISH.

Jul 17, 2008 | Mitsubishi WS-55807 TV

2 Answers

Tv screen goes black

No, if the picture of your tv screen is clear when when you watching. the troble of your tv is looseboard, and you replace your CRT socket too.

Apr 16, 2008 | Sony KV-35V35 TV

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sony kv36xbr400 wega I have a 5inch black line across top and bottom & gray side to side making a smaller picture.

Nov 16, 2007 | Standard (CRT) Televisions

1 Answer

Blue screen

this problem is due to blue video circuit. 1 Please check supply to blue video ckt. 2 check crt base for loose. 3 check loose contact & parts related to blue cathode. 4 blue signal coming from processor to blue video. 5 processor it self. 6 at last if tv is very old than check crt also.(possibility is rear) hope this will help.

Oct 03, 2007 | Sharp 32C-240 32" TV

2 Answers

Screen has turned a blue tint after turning itself off

I will not bore you with advice which you cannot follow. (90 % probability, looks like the Blue Signal Video Output Transistor has become faulty). This is a very simple "fixable' problem for a Professional Technician. Should not take more than 15-20 minutes.Nothing you can do. Call for Professional help.

Jul 26, 2006 | Toshiba 32A33 32" TV

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