Question about Sharp 21" Multi System Stereo TV

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Vertical line but good vertical amplifier..... how to solve this problem?

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  • Sharp Master
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Check dry capacitors near the IC and the diodes

Posted on Jul 08, 2008

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1 Answer

My tv blue screen and line


replace the vertical amplifier if the line is side to side if the line is top to bottom replace the horizontal amplifier and you will.have full screen

Oct 03, 2015 | Konka Televison & Video

3 Answers

Dark horizontal line traveling across the screen vertically


on tube tvs bestto go on main bord look for hairline craks on soldering ok redo them nice it will light up happend to mine also older model thx nick

Feb 06, 2008 | Sony FD Trinitron KD-34XBR960 34" TV

1 Answer

Vertical line


Hello,

Most probably the vertical deflection amplifier is failing. The most common part that fails is the vertical output transistor.
The set is too old to find documentation on part numbers and descriptions. Probably the part is no longer available and you will need the assistance of someone who can help you find an equivalent transistor that will do the job.
Of course, without testing we cannot be certain the failure is the output transistor. It could be from something else such as the voltage regulator that feeds the dc line to the vertical section. Could be the vertical synchronous level that goes too low to trigger the vertical sweep generator.

Other bad parts in vertical deflection circuit though there are not that many parts that would kill the deflection entirely.

Loss of power to vertical deflection circuits. Check for blown fusable resistors/fuses and bad connections.

Loss of vertical oscillator or vertical drive signals
Good luck.

Jun 01, 2010 | Sony BRAVIA KDL-52W4100 52 in. LCD HDTV

3 Answers

My 15 year old Toshiba Televisiononly shows a narrow horizontal band in the middle of the screen. Sound OK.


Hiii fairley,

You aren't specsificly dercribe yor tv set.
For common TV horizontal problem ;i.e : White line accross the horizontal screen, horizontal band,etc..it's can solved by replacing the IC Vertical/Transistor, and olso to replace the cap nearest the IC.

For common TV Vertical Problem :i.e : White line at the center of the screen (top to bottom),Vertical band,etc...It's can cure by Replacing the Horizontal IC/Transistor,and offcurse the cap's.

Tha's what all I know....

Hope can help you to solved the problem.

Thank's

h3liax

Jun 22, 2009 | Toshiba 32A33 32" TV

1 Answer

Vertical lines appearing on my laptop screen


...not good. Generally means your screen is on it's way out.

Jun 22, 2009 | Compaq Presario M2000 Notebook

2 Answers

SanyoTV-blk screen w/thin line of light across screen great sound


Your Vertical Amp is probably Blown (bad) , but before you change that check all capacitors around the vertical amp IC and / or resolder resistors and diodes around vertical amplifier.
And NO it is NOT the Picture Tube
Good Luck
JG

Apr 18, 2009 | Sanyo DS27820 27" TV

1 Answer

No vertical amplitude. only hor. line with video? i change ic an5534, but problem is the same.


I see with my oscilloscope, that vertical amplifier( I.C. AN5534 ) oscillate and output signal is not normal.When i measure vertical deflection yoke see about 33 ohms . normal value is about12 to16 ohms.So i disconnect the two parts , measure one by one and i see that one off the parts is not good.
So i change the deflection yoke and solve the problem.
Best wishes ! Nick

Dec 25, 2008 | Televison & Video

1 Answer

HORIZONAL LINES


that is because you have a defective vertical deflection circuit, check all the caps and if that does not solve the problem replace the vertical output ic

good luck

caypianan@yahoo.com

Oct 27, 2008 | RCA F32650 32" TV

1 Answer

POP and noothiing


yes it can still be fixed! the pop sound you've heard maybe came from a blown capacitor in the vertical deflection circuits. this symptom, sometimes called the tube light effect, it is characterised by a bright thin horizontal line across the middle of the screen. this symptom is caused by a breakdown in the vertical deflection circuit. hence maybe the trouble maybe in the vertical oscillator, amplifier or output circuits. but if all i have said is not clear to you, better bring it to a qualified tv technician. good luck!

Mar 10, 2007 | RCA E13309 13-Inch Diagonal XL-100 Color...

1 Answer

No horizontal red convergence control


Probably the red convergence output IC has failed. The chip is basically a stereo amplifier that serves as a horizontal amplifier and a vertical amplifier. I suspect the vertical part has failed and is not uncommon. Should be generic STK392-150's or maybe STK392-110/120 I believe. By the way when the line moves up and down that means the vertical is working when it moves side to side the horizontal is working.

Feb 03, 2007 | Philips 60PP9202 60" Rear Projection...

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