Question about Standard (CRT) Televisions

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ONIDA CZR-20 Intermittently change TV screen into full green color, no sounds at all. After some hours it comes back to normal mode.

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  • 67 Answers

The crt socket may be bad or crt board may have loose connection or chroma and or microprocessor ic has poor solder joints good luck

Posted on Jan 21, 2009

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Sony kv-21cl10E


check the color drive, and resistors that change value or open, check also the connections

Dec 10, 2012 | Sony FD Trinitron WEGA KV-21CL10 21" TV

1 Answer

I recently purchased this type of TV from someone who sold it online. Its a 32'' and has a memory stick feature. I can get the TV to come on and the picture looks great but there is no color to the images....


U Know basic soldering,have soldering tools and solders?Take ur tv back cover off,resolders the video board the connect to the CRT(tv tube).Also,resolders the CRT yoke connection to the main board,the connection have GREEN,YELLOW,BLUE,RED to one connection's plug to the main board.You do the above ur chances to get colors back are 80-90%.U can tries to reset the tv back to factory setting,by unplug,replug it an hour later,this method 50/50 to get the colors back.

Apr 29, 2010 | Sony FD Trinitron WEGA KV-20FS120 20" TV

1 Answer

My tv has sound but no picture. The screen is greenish in color.


SONY TRINITRON TV 32 INCH MOD# KV-32FS10 SER# 9006800 PICTURE INTERMITTENTLY BLANKS OUT AND COME RIGHT BACK NEVER LOOSE SOUND.

Feb 07, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Green Display Problem


Hello vinodquilon,

The problem you described is more then likely related to the video processor. Possibly also some power supply issue, since the audio section is being effected also. Or this may be two unrelated problems in that case the video processor and the audio processor and amplifier should be suspect. This is how I would handle this problem:

1) Get the schematic for this TV

2) Tackle the video problem first
a) Locate the video processor connect a known video source generator (I use the Sencore VA62A) and take voltage measurements and compare them to the schematic values (For red, green, and blue), if the values are not as they should be, use and oscilloscope to look at the waveforms of the video section and compare them to the schematic values if they are not as they should be, change out the video processor. Retest the TV, this should take care of the video problem.

3) Tackle the audio problem
a) Using the audio section on the VA62A inject a 1000Hz tone into the TV and using an oscilloscope check the input to the audio processor and the output of the audio processor if you do not see a 1KHz sine wave on the output check the voltage levels and compare them to the schematic, if they do nor match change out the processor, if they do match and you see a 1KHz sine wave at the output of the processor, then check the input and output of the audio amplifier stage in the TV if there is no audio at the output change out the amplifier.

This is a good starting point, now I must be frank with you, I run a TV repair business and I do understand that you may not have , Video Signal Analyzer or Oscilloscope, and Video/Audio Signal generator, or even a multimeter to do this job correctly, so since I have told you how I would do this job and you can follow the instructions given and solve your problem, Let me advise you on what you should do,

If I were you and did not have the above equipment nor experience in electronics, I would take the TV to a qualified TV repair center and have it fixed there since they would have the necessary equipment to do the job properly.

I hope this helps,

Thank you,

Shuttle83

http://www.electron-age-technologies-llc.com

Jan 21, 2009 | Standard (CRT) Televisions

15 Answers

Deactivate child lock on Onida TV


Try with 1147 (This one worked on my ONIDA TV) OR 5963 OR PRESS ZOOM BUTON AND VOL- KEY BOTH.

Aug 04, 2008 | Standard (CRT) Televisions

2 Answers

Onida Ky Thunder tv blackout


my onida ky thunder giving fault led blinking after plugin and after 5 second goes to stopped mode

May 11, 2008 | Standard (CRT) Televisions

1 Answer

Picture goes out periodically


Sound like color problems, could be convergence going out. Not quite sure of yellow color, but you could be loosing one of the 3 colors red blue green, this could be why you see yellow.

Sep 24, 2007 | Sony KP-61S75 TV

2 Answers

Screen changes from normal to green instantly


intermittent problem resolder around the color circuit.good luck.

May 17, 2007 | Sharp 27H-S60 TV

1 Answer

Color Turns Green


HI PLEASE ADJUST THE SCREEN CONTROL OF UR TELEVESION SET IT IS INSIDE THE TV..IF U KNOW THE SCREEN CONTROL IN THE SET THAN MAKE IT LITTLE ANTICLOCKWISE.AND THE SET WILL BE OK..

May 13, 2007 | Sharp 27H-S60 TV

1 Answer

Zenith 25" Color TV - Model A25A23W


Your problem is a bad connection on the CRT socket on the CRT driver board, a bad connection in the RGB driver supply from the video jungle IC or maybe even an intermittant Picture tube. the only way to tell would be to tap on the crt board while the sets playing with a non conductive insterment, and see if it changes. Now there is alot of HIGH VOLTAGE at this spot, so if you have no TV repoair experience Please stay safe and call in a pro to assist you. Good Luck Please dont forget to rate this thread.

Nov 11, 2006 | Zenith A25A23W 25" TV

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