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1982 rca frontloading projection tv picture won't stay on

Tubes all light up. picture is perfect, but goes to a thin line, then shuts off. audio still works fine.

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Power supply problem..Could be as simple as a passive component all the way to a regulator/transformer or even a CRT.....accordianman

Posted on Feb 18, 2008

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My KP-51HW40 clicks off after running for a period. The red power light blinks when it goes off but screen stays dark. When TV is shut off for a while it restarts and runs fine. The "On"...


Hi,
KP-51HW40 shuts off due to incorrect white balance and blue arch lines is an evidence of that incorrect white balance. I hope tv standby red light would flashing 5 times then 3 seconds pause and again 5 times when tv shuts down.
This is rear projection tv that has three picture tubes (red-green-blue) inside to generate picture that projected at front screen. These three picture tubes must be drive with correct drive voltage to produce good picture of each color.
Solution for your tv problem is Screen Voltage adjustment that can be done easily if you are handy with electronics stuff repair.
Let me know your expertise level to guide you more and if you feel unconformable by tv repair then local tv repairman will help you to adjust white balance in tv.
Hope these info will help you.
Let me know if you have additional questions.
Thanks.

Nov 05, 2010 | Sony KP-51HW40 51" Rear Projection...

1 Answer

1. My Sony KP-57WS500 TV is turning blue after abut 3 minutesof operation. It stays that way for about 30 miunes and comes back with pictures again, but with predominatly blue color. 2. Sometimes the TV...


Sounds like the picture tubes are failing,common on sony. do you notice any thin horizontal lines? You mite get lucky and be able to adjust the voltages. Remove back cover and look inside to see which tubes are lighting up.The front panel below the screen will come off and behind it is a small access cover.remove it. there you will find the voltage controls (its a plastic square with 6 knobs). 2 knobs for each tube, 1 is focus the other is the voltage labeled "screen". they are marked so look closely. Green is always in the middle but sometimes they flip the controls for red and blue so pay attention to which you are controlling .slowly adjust screen voltages to see if you can get it to stay on. If you over do it those thin horizontal lines will pop up and the tv will shut off again. If you already have lines back off the voltage by turning knob to the left slowly until they diappear. If that seems to fix it but the problem but it comes back later, then the tubes are shot. good luck!

Jul 05, 2010 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Big screen RCA 52" flash green light on three times and shut off. Will not stay on , had a tech look at it he said power supply. We replace that, it continue to do the same thang. Now techician saying its...


power supply's are hardly ever replaced, they are repaired. your picture tube in most cases usually fail slowly progressively over time, there are many protection circuits involved in a TV`s circuit, they protect your unit from faults like power supply faults, picture convergence, vertical amplifiers, x ray, ext depending on your model, i suggest you search out a second opinion form another organization before spending 600 plus dollars for a new tube, i suspect your tech may be a little less than honorable...

Apr 26, 2010 | Philips Magnavox 9P6034C 60" Rear...

2 Answers

RCA hdtv sound but no picture


sounds more like a vertical problem since the audio still works. If it were multiple green lines then I would say green tube but the tube will usually shut a set down and it will be dead no audio. Try replacing the audio output IC

Jul 21, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

Green Screen, No Sound, Shuts off after 10 seconds


Almost certainly the green picture tube is shorted. This is a very expensive repair; probably not worth doing.

Apr 24, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

MY TV WILL NOT STAY ON WHEN TURNED ON!


Pull the back off disconnect the CRT Board connected at the end of Picture Tube if TV comes on with sound then you have a Bad TUBE.

Feb 15, 2009 | Sony KP-61V90 61" Rear Projection...

3 Answers

RCA 52-inch (rear projection) big screen television


tv worked great, turned it off one day and back on the next and the on light would not come on nor would the tv work, rear projection 52 inch rca

Jun 18, 2008 | RCA P52926 52" Rear Projection Television

2 Answers

Rca projection tv has no picture or osd


Check the bulbs. If one is burned out, you will get this problem. The bulb is easy to change but will run you about $300.

Feb 10, 2008 | Televison & Video

1 Answer

Sony 57 in Rear Projection TV


If the picture is playing fine and you notice that the background is getting more and more red, until it is too red and the set shuts down, it could be that the red screen control is set just a bit too high. If this is the case, you can probably correct this yourself. If you are watching a perfect picture and then it suddenly flashes a very bright red, with thin red lines in the pictureand then shuts down, it usually means that the red picture tube has developed a short in it, between the cathode and heater. A good tech might be able to remove the short by arcing, but if the short persists then the red tube will have to be replaced. Either way, this is something that should only be done by a qualified tech.

Aug 27, 2007 | Sony KP-57WS500 57" Rear Projection...

1 Answer

RCA 52" will power on but shuts down immediatley


plz get the picture tube ic's basically when green light mostly appears on the tv it is said that there is a roblem in tv ic's

Feb 28, 2007 | RCA D52W19 52" Rear Projection Television

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