Question about Sony PVM20L2 20" TV

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Picture is dark...displays as mostly and redish brown wondering if picture tube may be the problem

The picture in one of my Sony PMV20LV video monitors starting going bad a few months ago...We use the monitor as a "preview" and we can no longer look at the monitor to determine shots because picture is dark

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It's time, more than likely, for a CRT...accordianman

Posted on Feb 19, 2008

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I have jvc av-27020 volume and channels display appears normal on the screen but the picture is dark, help to solve it

Volunteers and Chan display ate digital inputs. On a CRT TV the picture is an analog input. A dark picture generally means that the EHT supply is low or the picture tube is getting old ending it's useful life, solution is not easy

Jun 03, 2014 | Televison & Video

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My picture is redish pink

Yes it has a picture tube.
My LG 32" does the same thing and has for several months. I just turn it off and back on again and it goes away. We will get a new tv instead of fixing it.

Apr 01, 2013 | Sony KV-36FV16 36" TV

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Sony Model # KV-HA21N80 Def. Picture Tube due to redish color with retrace line. I need brand new picture tube or 2nd hand.

i have a problem with kv ha 21 m 80 t. i change the colour ic but colour are not good dot have any pre set to controll. is it controliing from the biase trassistors. green gun is not workin propaly

Jan 13, 2011 | Televison & Video

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Picture is greenish and redish no bllue


Blue video output section of your Soney tv has failed. It may be due to a open video output transistor or a resistor. Video output section can be located at the picture tube base card itself. in some models, Sony used transistors, and on others they uses IC for this section. Just open your tV, and measure the voltages at the Red, Green and Blue cathode voltages. It should be almost the same to each other. In your tVs case, the voltage at the Blue cathode will be high. Normally it should be due to an open resistor or loose or bad solderings. I advise you to resolder most of the suspected solder points with applying a little more solder, without making any solder bridge shorts in between. Check it out. If this does not help, check Blue output transistor, or if it is an Ic; whatever may be used, for open. If found faulty, replace it with same type and number. OK.

Jan 11, 2011 | Sony KV-36FS12 36" TV

1 Answer

Dark display - sony trinitron kv27ts27

In the Sony TV a dark display is generally a bad picture tube. I have seen many of these and thought I could correct it with a deflection repair. I would next put the main board in another TV and saw that the board was just fine.The TV had a good picture.You can bet you have a picture tube that is bad!

Nov 10, 2010 | Sony Televison & Video

1 Answer

My sony shows dim, could it be the picture tube. I can see the picture when it is dark in the room; if the sun is out you can see the picture only it is very light.

picture tubes harsly ever go out i have work on curtis mathis tvs from the 70s and their tubes were great most like the leads within the tubes need cleaed in order to do theis take it to you local repair sop an they can burn the filament so that they are bright again.

Jul 01, 2010 | GE 31GT660 TV

1 Answer

I'm having a problem with the picture tube on my 51 inch sony rear projection TV, 3 years old. All of a sudden the display that reads "Video 1" or "Video 2" is slanted and so is the...

It is very common to have the convergance circuit on these sets go out and cause display distortions. Are the colors separated or is just the picture slanted?

Dec 31, 2007 | Televison & Video

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Picture darker/less color/smaller until warm up

Hi there!
Have you checked for dust on the Tubes and mirror? This may cause a bad picture quality. Also power supply related problems like capacitors can cause a dark picture. Try replacing some of them in the power supply area and line stage.Also adjustments in the service mode,but for this you will need the service manual. Good Luck,JUS004

Oct 15, 2007 | Mitsubishi VS-55707 TV

1 Answer

No picture

I hate to be the bearer of bad news, but what you have is the Sony classic bad picture tube. All the events which you described were coincicence. When a Sony picture tube is weak there is a circuit which detects emission from the guns , if the emission is low, a video blanking signal is applied. Sometimes you can turn the screen up (inside of TV, Not recommeded for non-technicians. an you may get a watchable picture. This however is not a fix. The picture tube is bad. Replacment exceeds value of unit Sorry. Scrivitron

Apr 21, 2007 | Sony KV-32S42 32" TV

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