Question about Televison & Video

1 Answer

My sony tv has vartical problem, when i start tv a white line is coming on the top and vartical screen is small. i check all dry solder. the vartical ic is LA7830. help me.

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 56 Answers

Check the electrolytic capacitors near this IC.. one or more of them may have either shorted or it's value may have changed signifcantly. Happens on olders sets .. they dry up due to heat if they are near a heat source like an transistor or IC mounted on a heat sync. Please give me the make and model of the TV.. there may be some known issues that I can look up for you. Also I need to know if the problem happend slowly or all of a sudden, hows the sound etc... give me as much information as you can.

Posted on Apr 16, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

A horizontal white line is appears in my LG Flatron colour tv in the middle of screen suddenly and the pictures disappears but the sound keeps on but when i restart the tv the pictures comes what would be...


Tap the top of the TV and if the picture comes on in full screen then it is possible that there are DRY SOLDERING points on the board.
use a good iron to touch up the soldering on the vertical and horizontal sections, the driver IC's. get help if you are not able to do the job but it seems a minor job.

Jul 05, 2011 | Televison & Video

2 Answers

On power up I hold the power button down, I can hear some sort of relay kick-on, sometimes a horizontal white line appears across the screen, then it kicks-off, and the red led blinks four times...


Hi,
White line across the screen indicates that tv got vertical deflection failure problem that may be due to vertical output chip failure. If that kind of problem occurred, tv select protection mode and red light starts blinking 4 times.
Please check vertical output chip in tv main board and replace it to solve tv issue. This job needs soldering work so local tv repair shop will help you.
Thanks.

Feb 01, 2011 | Sony FD Trinitron WEGA KV-24FS120 24" TV

1 Answer

TV TURNS ON,LINES ACROSS SCREEN THEN TURNS OFF BY ITSELF


sounds like a vertical problem, usually you'll see one white line across the screen, but one I worked on would come on and the bottom half of the picture was gone and there were lines across the top of the screen.

If you know how to solder & can find the vertical output chip then you could try resoldering the pins. If this doesn't fix it then it needs new parts.

Mar 08, 2010 | Sony FD Trinitron WEGA KV-36FS120 36" TV

1 Answer

When I turn on my TV I have sound but no picture


ths is a coman problum in tv it is a two type of problum solonution
[1]check filament voltage on crt base and check filament is on if not then Resolder filament ragistance or replace with new
IF filament is OK then ......
[2] check screen voltage hight more then normal and see the screen H line on the screen then problum is vartical section then check or replace capaceter /registance /vartical IC

Jan 30, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Sony wega crt tv wont turn on red light flashes 7 times thats it


this problum is inside of tv-set
pls. check output voltage from EHT any one output daiode is sort /or open then check and replace with new
if ok then eht screen voltage reset from eht screen preeset and check h- line or blanck rester light
if H-LINE then check vartical B+ voltage /replace vartical ic. or capaciter

Oct 26, 2009 | Sony Televison & Video

1 Answer

From about 4 inches down from the top of the tv and from the center to the left corner is red and green and the corners on the bottom of the tv are also arched but not as bad


this is a vartical non linarity folt .
chech vartical stage capaciter 470umf/63v 4.7um/50v 1000/50v
0.47um/63v Replace and first svr.menu to set vartical linyarity adj.
set V- hight is sum down sum 1" or 2 " after the set vartical linyarity V-line. set up to down and check the pictur. if not then Replce capaciter.

Oct 04, 2009 | Hitachi 51F500 51" Rear Projection...

1 Answer

I have a 1985 Zenith Space Command Color TV. It has developed thin white lines at the top of the viewing screen. The rest of the screen is clear. Is it something small or am I looking at a new picture...


The picture tube is fine.
Those whites lines at the top of the screen are caused by a dry or leaky capacitor(s) nearby the vertical amplifier IC.
Let me know if you require further assistance.

Jul 26, 2008 | Televison & Video

1 Answer

Lines on tv


Set starts, horizontal and vertical deflection work, HT ok, crt heaters ok, but no sound or picture
I turned the G2 voltage up and noticed a white screen with flyback lines, frame ok. I detected two badly soldered double diode rectifiers in the secondary part of the power supply ! I checked all other joints, and everything was ok !! success
White horizontal line (no vertical deflection)
Check / replace R548, R549
Sound but no picture except for a couple of horizontal colour lines
Replaced the frame chip TDA8356, set now ok

Nov 23, 2007 | Mitsubishi WS-65511 65" Rear Projection...

1 Answer

Sony CRT Tv (KV-T29SZ8)


When you see white lines at the top of the screen, it means that the pump-up capacitor next to the vertical output IC is bad and the IC is about to quit. When the output finally quits, you get a black screen with possible dim spots. The vertical output IC and its pump-up cap will have to be replaced, and the little fuse resistors next to the flyback in the + and - supplies to the vertical output IC must be checked too. If you have experience working on TV's then you can do it yourself, but if not then have the set serviced by a tech experienced in Sony sets.

Aug 09, 2007 | Sony KV-35S42 35" TV

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

32 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74383 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

Are you a Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...