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HI I HAVE A 32 INCH SONY TV GOOD AUDIO THE SCREEN HAS RETRACE LINES NO, PICTURE I CHANGE THE MICRO, IC I STILL DONT HAVE ANY VIDEO THAN KYOU, BOSS.

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A) from the CRT Socket Board find G1 ( control grid ) , or G4

check the resistors connected to it

there might be open resistor

b) minimize G2 ( Screen Voltage ) by turning counter clockwise lightly

c) check also 185 V line to Video Amp Out

d) check heater voltage also ( if none, it comes from the flyback )

Posted on Dec 09, 2009

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Posted on Jan 02, 2017

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My tv sony kv-xa21m61 display too bright and many horizontal lines. no picture


Vertical retrace lines is the problem. Thin white lines runs across the entire screen, at about an inch apart to each other. Check its video output supply voltage. Reduce the screen voltage to a little bit down and check. If you still wish to know more about this fault, check this site. Pull up older posts there.

Feb 09, 2013 | Sony KV-XA21M61 21" TV

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Screen has gone grey and has fine horizontal lines on entire screen. Blue screen is out.


Either the screen voltage to picture tube is more than normal, or the video processor IC has damaged. There is an other possibility that there is no voltage at the video output card, plugged on to the neck of the picture tube. Anyway, your set need a through checkup, and the work is somewhat skilled one. Just check this site. Soemtimes you might get some details about this fault. The fault is called vertical retrace lines. Thin horizontal lines all across the screen with an inch apart. One among the posts published in the following site have details about this fault.
Visit the site named 'Electro-help' for more details. Click this link. View it in "Timeslide" or "Flipcard" option, which can be selected from the drop down box menu by the [Sidebar] tag, at the top left corner of the display window. It will make search easy. There are more than 1250 posts to different brand TVs now. Pull up older posts there.


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Sony wega-ha21m80 problem no picture reterc line ok sound


I THINK YOU MEAN RETRACE LINE. if your tv has retrace line the video amp circuit should be checked its a transistor or in other cases its a IC replace either of them.if its an transistor on circuit voltage measurements shoutld be 2.4 volts from the emitter amd 2.8 volts on the base.can also be a faulty inductor..good luck.if you are not a tech have a tech repair your tv.

Oct 03, 2011 | Sony FD Trinitron WEGA KV-32FS120 32" TV

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I have a panasonic tv with retrace lines at the topI


If you can locate the vertical IC you are nearby!. You will have to resoder the grounds on the vertical IC and any cap in the immediate area of this vertical IC is weak. I would replace them all as they will pull each other down. There may be four caps and the largest one, possibly a 25 volt 2200MF would be the only good cap. I dont have the specs on this set, but this will surely lead to a good repair!

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1 Answer

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

1 Answer

Slow to come on, picture flashes black, 32" SONY tv


blankenship, the "IK circuit" is blanking your screen, only "fix" is temporary, remove back of tv, and on rear right side (facing into the back of the set) you can see 2 philips type plastic screws mounted on the flyback transformer, one is focus the other is screen, do not adjust focus , turn screen control clockwise slowly until you get white retrace lines on screen, then turn counterclockwise until retrace lines disappear, this increases drive from tube to IK circuit, will last anywhere from 6 months to 18 months and then it`s replacement time, questions? e-mail me back. good luck, BMW Rider

Jan 11, 2008 | Televison & Video

1 Answer

Sony trinitron 32


Hi, tubes getting tired, band-aid fix you can do is remove back of set and turn up(clockwise) the screen control( small black plastic control mounted on side of flyback transformer, do not turn the knob marked focus) until you see a whole bunch of white lines across the screen, then turn same control counter-clockwise until all the lines go away, try several different channels to be sure all the retrace lines are gone, you`ll get up to 1 year more use out of it, than she`s done, good luck, BMW Rider

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1 Answer

Very poor picture


  • your problem is called picture with retrace lines.
  •  your problem is in video output circuit
  • as you are saying that it was off for a year that means there is possibility of loose contact in that section.
  • plz check the following
  • supply to video output absent or loose print.
  • loose connector in crt base.
  • crt base loose
  • voltage on screen control or g2 absent or wire loose.
  • screen control located on flyback transformer mistuned.
  • hope this will help
  • good luck.

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Oct 19, 2007 | Proscan PS32125 32" TV

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Sony trinitron 32 in. pip no video, (raster, with audio)


What you have described there is a classic example of the jungle IC failure. Ic301 Sony p/n 8-752-101-04. A pic with no color, and lines or grainy texture in the picture. Not a project you want to tackle if you don't have the proper soldering equipment or skills. And not a costly one at a good repair shop.. Only real hurdle is getting that heavy monster into the shop. To answer your question, yes what you described there is raster. Even the salt & pepper looking screen with no real decernable image is described as raster. In fact any image generated on the CRT is raster. And yes, these sets are prone to solder joint problems, usually ring cracking in circuits that generate the most heat.

May 20, 2007 | Sony FD Trinitron WEGA KV-32FS100 32" TV

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