Question about Sony FD Trinitron WEGA KV-32FS120 32" TV

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The colour of our sony tv model no.kv-xf21m83 has got fade

I think there is no cotrast. when i set brightness to maximum level a fade picture is there but when brightness decreased there is no or a little picture. all colours are there but fade.

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Pictrue ok but sink problam ( sakrech ) color up& down

Posted on Aug 14, 2009

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Sony KV-32FX20U picture has a colour cast


Check its video output card [a card directly plugged on to the back of the picture tube] for any loose solder terminals. Re-solder all the suspected solder terminals there, by applying a little more solder to each points. A bad solder point can cause this type of problem.

Jan 23, 2013 | Sony KV-32FX20U 32" TV

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The colour of our sony tinitron color tv model no.kv-xf21m83 has got fading (Red colour disappeared )and the indicator flashes red a number of times between 3 second intervals and the est is sparking


hi
this sounds as if the tube (crt) as a intermittant short in the red gun , try tapping the neck of the tube very softly with a screw driver handle, this just might just clear the fault
regards windyhouse

Apr 23, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

The color is fading in our KV-32FV26 Sony Wega The TV is approx 3 years old.


my sont tv model no. KV-XF21M83 (21 in's) indicator lamp flashes red a number of times between 3 secounds interval
the color of the tv has gone faded. The channels name on the top right or left side is not seen properly
The EHT is sparking near the picture tube.
Nessarry guidence may please be comnicated in this regard please. send me feed back to my email adress
sikandher@hotmail.com

Mar 13, 2009 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Sony lcd tv picture starting to fade


Hello oilreddye,

This sony (KV-36FS120) is a flat screen CRT type Television not LCD. However the problem you are describing sounds like a CRT problem. I posted this before and I hope it is helpful to you,

This may be a CRT problem. From what it sounds like i.e. dim picture, colors not bright. If you have a background in electronics I would tell you to check the voltage levels on the CRT pins and compare them to the values on a schematic, however if you do not have a background in electronics, I would suggest you taking the TV to your local TV repair shop and have them troubleshoot your problem.

Here is a possible list of things that might be wrong:

1) CRT going bad (The shop can try CRT rejuvenation if needed)
2) High Voltage on the anode not at proper levels (The shop can check this with a HV probe)
3) Video output levels low (The shop can check the voltage and signal levels on the CRT socket board, and on the video amplifiers).

These are the three primary possible issues.

I hope this helps,

Thank you,

Shuttle83

Nov 21, 2008 | Sony FD Trinitron WEGA KV-36FS120 36" TV

1 Answer

Sony trinitron tv kv type


The screen voltage adjustment should be on the back of the high voltage multiplier. It should be marked as "Screen", or "G2". Next to it, is the "Focus" adjustment.

Some models of Sony sets have two focus adjustments. This is for H and V focus.

When increasing the screen voltage will usually increase the wear factor of the electron-gun assembly in the CRT. This is because it is increasing the screen bias current.

When increasing the screen bias, the brightness will increase a little. When the CRT is weak, this may produce visible retrace lines more so than on a good working CRT. This is because the excessive screen current will stop allowing the electron-gun assembly to work at its proper cut-off level in order to allow the blanking drive to bias it off during the retrace period.

Increasing the screen bias will usually cause a shift in the colour temperature especially in the low level gray colours. This is because the AKG reference for the electron-gun biases will be offset due to the differences in the electron gun performance characteristics change.


Jerry G.



May 03, 2008 | Sony FD Trinitron WEGA KV-36HS510 36" TV

1 Answer

Picture has green tint on startup


Jar-Head, bad news, the picture tube has a mild short in the green cathode, tech can come out and try to restore it but it`s usually a futile attempt on sony tubes, sorry to be the bearer of bad news, BMW Rider

Jan 14, 2008 | Sony KV-32S26 32" TV

1 Answer

KV-32FQ75E colour loss


Go to the Sony website and check out the correct antenna cable and scart lead configuration for your set up. I did and with a few simple connection changes it was like getting a new TV.

Jan 07, 2008 | Sony FD Trinitron WEGA KV-32FQ70 32" TV

1 Answer

Sony KV-24FV12 Image intermittant Blackout


Hello Robert, the picture tube on your TV set is exausted. Please contact your nearest Authorized Sony Service for further help/advice. After all, Sony is a good choice. The next TV set you buy could be one of Sony-s Bravia LCD. Kind regards, Arpad

Dec 20, 2006 | Sony KV-24FV12 24" TV

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