Question about LG 30FS1D TV

2 Answers

TV focusing problem

I have a LG CT-34M20ET that has a problem with focusing, blurring picture, I have played with the contrast, and flyback transformer adjustments, no differing in picture, any possible suggestions would be handy.(electronic technician I know TV's can bite) Flames

Posted by on

2 Answers

Re: TV focusing problem

You will find this is a defective picture tube, costs involved make the repair non viable

Posted on Mar 28, 2007

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 513 Answers
Re: TV focusing problem

It's good that you know how TV's can bite, I'll still have to post this in case someone having your problem and reading isn't aware of this and feels lucky- If still under warranty or if you have no electronic repair experience you should take the set back to the shop or to a repair person. Some of the solutions described below can be dangerous, TV's are very hazardous to service. Even when plugged out, TV's can store very high voltages. could be a problem with the screen potentiometers block. should be located on the chassis close to where the HT lead passes on its way to the picture tube. Good luck

Posted on Mar 16, 2006

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

Akai ct 2180 blur picture

change CRT base and reconnect focus wire after cutting away half cm of the wire-end

Mar 21, 2014 | LG 30FS1D TV

1 Answer

Picture blurred

blurred picture can be adjusted,and sometimes replacing of crt socket will solve the problem.
this is tricky so i've advice you to follow what i've said strictly.
Open the back cover of your set (make sure that you unpluged the unit first).
Look for the flyback transformer (it has a sunction cup connected to the picture tube).
You will see an adjustment knob on it, it mark focus but wait before touching,mark it with your pentel pen,marking the original location of the knob is important because that is the factory align.
After marking get an screw driver w rubber insulator as a handle to avoid an electric shock,this will be used to adjust the focus on the flyback knob.
Turn on the unit and hooked it up by your dvd player.
Play the dvd so that you will see a picture on the screen.
Pause it with a picture with characters.
Now you can see the blurred picture?
Try to adjust the focus on the flyback back and forth minimal turn only.
There's a reaction?Yes- continue to get a perfect picture and youre done.
There's a reaction?No- back the knob on its original position.
Your crt socket is faulty.
try some helped of your technician or people knowledgeable of disoldering and soldering technique.
Pull the board on the crt socket.the socket which attached to the tube is the one you are going to replaced. I've adviced you to observe first and familiarized what are going to dis-assemble because you will do the same when you replaced a new one.
After replacing your crt socket,picture ok?Yes-you're done
After replacing your crt socket,picture ok?no-picture tube is faulty.........

Jan 02, 2011 | Sony FD Trinitron WEGA KV-34HS420 34" TV

1 Answer

Certain aspect of my sanyo tv are very blurred

This problem requires adjusting the Focus on the flyback . Turn the tv around and look for adjustmen slots on the back. If you can see them, use a nonmetalic small srewdriver and slighty adjust the top or left one. Be careful, it is the high voltage area

Sep 15, 2009 | Sanyo Standard (CRT) Televisions

1 Answer

Blurred picture

the problem of you tv is the CRT socket ,replace the socket.

Jan 07, 2009 | Toshiba 32HF73 32" TV

1 Answer

LG tv child lock on how do i unlock it?

my lg tv locked accidentally how can i unlock?

May 20, 2008 | Standard (CRT) Televisions

1 Answer

Blurred pic on tv

you can take the back off find your flyback (the big part with a red or pink wire going to the picture tube) and adjust the small pot or potentiometer closest to the top while the set is on in front of a mirror and try adusting the focus control.
if cant get nothing but blur replace the fly or focus assembly if not built in the fly. I would change both.

Jan 26, 2008 | Hitachi C21RF39 21" TV

1 Answer

TV picture is dark

the unit flyback has 2 adustments most likly one is focus the othercontrol on the unit g2 which if slightly adjusted will bump ur brightness up

Oct 27, 2007 | Toshiba 36HFX72 36" TV

1 Answer

Brightness of picture

If you feel good about opening your set then you can try this: Look for the flyback (high voltage) transformer, with the thick red wire which goes to the top of the picture tube. There are 2 controls on the flyback transformer, focus (top) and screen (bottom)Turn the brightness and contrast all the way down and then increase the screen control until you see retrace lines, and then back it down until those lines just vanish. Return the brightness and contrast to normal and adjust the focus control, if necessary, for a nice sharp picture. Let me know if that brings your brightness back.

Aug 21, 2007 | JVC AV-27D104 27" TV

1 Answer

I have sound but no opicture

When you replaced the flyback the new flyback is shipped with the screen and focus controls set at minimum. These are the 2 controls on the flyback itself. Turn the set on and let it warm up a minute, then slowly turn up the screen (bottom) control with a small flat-head screwdriver. When the picture is around normal brightness, adjust the focus (top) control until the picture is nice and sharp. Then, turn the brightness and contrast all the way down and set the screen control until you can just see the picture, just above the point where the picture vanishes. Reset the brightness and contrast settings and your picture will be back to perfect.

Jul 02, 2007 | RCA F36650 36" TV

2 Answers

Tv out of Focus

Well you did start out good, thats cool, now we have to define focus, Is ir blurry around the edges as well as the whole Picture? If it is, it could be the picture tube, A bad solder connection on the tube socket, and yes it could also be the flyback transformer.

Oct 06, 2006 | Philips 27PT8420 27" TV

Not finding what you are looking for?
LG 30FS1D TV Logo

Related Topics:

325 people viewed this question

Ask a Question

Usually answered in minutes!

Top LG Standard (CRT) Televisions Experts

The Knight
The Knight

Level 3 Expert

66537 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers


Level 2 Expert

132 Answers

Are you a LG Standard (CRT) Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides