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How do i disconnect crt from tube? - Sony Televison & Video

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CRT = Cathode Ray Tube
give more details what you need to disconnect from what.

Posted on Sep 28, 2010

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Sparking And Crackles On CRT Neck


tried to clean the anode cap and the crt tubes holes but make it sure before you do this, must have proper discharge of voltage from the tube.if still the same problem it could be the flyback transformer has problem.

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How to change picture tube(crt) in a sony kp57ws500


Changing picture tube is a professional job and involves many procedures that are beyond the DIY projects. How ever if you are really hot with electronic, you can attempt it at your own risk. Make sure set has been off for some time, disconnected, and HV discharged. You will have to open the hard board back then the plastic back cover on top. Remove the mirror, Be careful!! now you will see the three tubes choose the one you need to change. Its better to disconnect all and take the crt assembly out and then change the one thats bad. take care and do it if you are very sure of what you want. There are FAQs on www.fixurtvs.com. You can download service manual from tech support at fixya site.

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I would go back to green tube disconnect ,unplug CRT board to green tube if set stays up playing its the tube.

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1 Answer

Tv Red Screen


There is only a few reasons for this problem and it is a bad video IC on RED CRT board or Defective RED TUBE disconnect CRT board at end of neck on red tube Look at IC on That board while disconnected from tube turn TV on if it keeps playing without shutting off Tube is defective.

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5 flashing light code


Disconnect RED Tube CRT board if set plays without shuting off RED tube is bad or video IC on CRT is bad.

Feb 12, 2009 | Sony KP-51HW40 51" Rear Projection...

1 Answer

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?


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.

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1 Answer

TV Has no pitcher


you could have a shorted tube Green disconnect CRT board from green tube if set stays on tube is shorted also check video ic on crt board.

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1 Answer

Popping; sparking of Red Projector to metal frame


Sounds like the red CRT has an internal short. Sometimes happens that the picture tubes develop an internal short and cause arcing. I world CAREFULLY disconnect all of the wires to the CRT and see if the arcing goes away. VERY IMPORTANT!!! there is a high voltage wire attached to each pictur tube, usually a red wire that goes to the side of the tube. You can get a shock even if the TV is unplugged, as the tube will hold a charge for years after the power is disconnected. If you don't feel comfortable doing this, DON"T since the shock is powerful enough to stop your heart.

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1 Answer

Picture has turned green


Possible green CRT bad....remove lower front speaker cover
and access panel.......carefully disconnect green PC board
from green CRT ( center tube )....plug in TV..power set....should have steady red/blue pix (no green) = bad green CRT............T.

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1 Answer

Green s


check for bad solders on the crt socket . If it turns off again try running the tv with the crt socket off the tube but 1st try to time how it takes for the tv to turn off then disconnect the crt socket. If it does not turn off the tube may be bad, if it does not turn off check the voltages at the crt socket and see if all the voltages at the colour outputs are close to the same, if so then you have a bad tube when you connect the tube and the voltages change conciderably the tube is gone

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