Question about Sony KP-51HW40 51" Rear Projection Television

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I believe the picture tube went out on my TV How can I be sure that is the problem and where can I order the part from?

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Most of the time when a Tube shorts out If Red then when set come on after a few sec you will see red lines go across screen then TV will shut off If Green then green lines so on.you can unplug CRT board on tube one at a time unless you know which one maybe bad If tube is bad set will play with CRT disconnected.

Posted on Jan 08, 2009

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Picture and sound went out. quickflash across the screen. then nothing. tv still has power. model number 46ex2b. couldn't find it listed


the problem may be in the heater supply, there are 3 picture tubes in projection tv. remove the back cover, switch on the tv & observe the heaters are glowing inside picture tubes. if not unplug the tv wait for 2 minutes, & trace the picture tubes' heater wires. there may be dry solders in heater power supply.

Aug 25, 2011 | Hitachi Televison & Video

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TV picture turned green, then it went out completely


if your set went all green then shut off you might have a shorted anode on the green tube this is not good news if the set went dead then it probably killed your power supply you will have to get this fixeed first then check to see if tube went bad.i need model of your set ill help yo find out k

Dec 27, 2007 | Televison & Video

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TV MADE A LOUD "POP" NOSIE AND THEN SCREEN WENT


Hell k_sopata
If the display isn't working and according to the conditions you described yes it is the picture tube. You could contact Samsung and get a replacement for it.

Jan 10, 2011 | Samsung PCJ522R 52" Rear Projection...

1 Answer

I have an Mitsubishi HD1080i series rptv, the tv is about 10 years old, yesterday as I was watching the World Series, my picture went to a pink glow and I seemed to of lost some of my color especially...


This may not be a picture tube problem, but considering the age of the unit it may be cold solder joints on or near the crt boards. Each tube has a CRT Board attached to the neck of each picture tube. Check these first for bad solder connections, in not then it may be the green tube has finally failed you. Getting tubes for this old of a unit will be very hard. IF it is the Tubes then i recommend you think about purchasing a newer set..

Nov 05, 2009 | Televison & Video

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HELLO OUR 53" PANASONIC REAR PROJECTION TV JUST WENT RED LAST NIGHT AND THEN WENT OFF AND IT WILL NOT COME BACK ON ANY IDEAS. IT TRIEDS TO START UP WITH A BLINK AND THEN OFF AGAIN


This model TV has a gasket on the red picture tube that faces down. The coolant leaks from between the picture tube and the lense assembly. When this happens the red tube over heats and shorts out internally and usually cracks the glass.You will probably find coolant all over the circuit board if you open the back panel of the TV.
Call a good TV Tech to repair this. It will cost over $500 if the picture tube is still available.

Jul 30, 2009 | Panasonic PT-53WX53 53" Rear Projection...

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Sony 65 inch screen tv


The lines you saw, i;m sure they are the ones called retrace lines but know the failure could be located on the red CRT board. Most likely the video amplifier is defective and not necessarily the CRT.
What is the model number of your TV?

Jun 17, 2008 | Televison & Video

2 Answers

No Power


Try removing the Green CRt PC voard that is on the bottom of the green Picture tube which is the center one. Then replace the fuse and see if your set powers up if it does you need a new gree tube. Just be sure the crt board doesnt touch anything while you try it. then let me know what happened, if you need a tube they arent available new any longer but I have a source for good used picture tubes,

May 22, 2008 | RCA P46812BL 46" Rear Projection...

1 Answer

Is my picture tube going?


Most proj TV's of that type have 3 Picture tubes Red, Green and Blue. It's not likely that all 3 went bad at the same time in the same manner. So I believe you have a circuit problem, probably in the power supply stages, possibly a bad solder joint.

Hope that helps...

Geno

Mar 25, 2008 | Televison & Video

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No picture, just went off while watching tv


The pink lines in the set happened when the first time it blew out. It is called a burn in on the inside surface of the picture tubes. Not the fault of the TV repair guy. This is the fault of Toshiba. This set has known to have this happen and you should contact toshiba and request that they replace all three tubes for you at no cost. You should also stop using these repair guys who cannot fix a simple vertical problem. Find out who is authorized for Toshiba in your area and call them. They will know, or should know the problems that happens with this model number and take care of them once and for all. Good Luck

Nov 06, 2007 | Toshiba 51H84 51" Rear Projection...

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Initially No Picture when Turned on but sound normal and 5 minutes later Picture is all RED and then Picture becomes NORMAL (all normal colors)


theres a high voltage block that all three of the anode leads attach to and sometimes a small crack happens across this block and will not let some or all of the crt's get the high voltage all at once untill it heats up a bit. now if this is not your problem i would make sure that all three crt sockets are attached to there tubes all the way as maybe justy maybe there loose and will only work after ther expand a bit. Now another problem that could cause this problem to occor origially would be that someone left off a crt ground strap and the crt arched and popped and caused the problem with the High voltage block. And no I cant see a tube being bad then comming on at first UNLESS when you say the red comes on is the picture all red with small retrace lines(small white lines)in the screen with no picture except for red???? No video only a red blank screen is what i mean. If thats what its doing then yes Ive seen heater to cathode shorts on a picture tube that would cause this problem but to be sure your really gonna need to have the set looked at.. Good Luck

May 17, 2006 | Toshiba 40H80 40" Rear Projection...

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