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Tv came in shop with shot down problem ,checks were made and a resister for the vertical supply was open..after replacing , set come on only with insufficiant vertical sweep at top and bottom.. am at my wits to know what is the solution? changed all filter caps yet no solution..

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Have you checked all the solder terminals of the vertical output IC, for any loose contacts? Check it. Re-solder all the suspected solder terminals by applying a little more solder. Check all the low value capacitors at the vertical output section circuit. Replace all of it at once, with same capacitance and voltage ratings. If these do not help you, have to enter its service mode option to adjust the vertical height, linearity etc: By the way, what is the brand name to your TV? What is the number of IC used as vertical scan output. For more information:

Posted on Nov 19, 2013


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Posted on Jan 02, 2017

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SOURCE: LG vertical failiure vertical line at the bottom of the crt

replace the vertical driver ic and the proccesor ic

Posted on Nov 25, 2008

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Show horizontal line.i replaced the ic checked all resistance & fuses but still fault is there

good day sir
if you already replace a new vertical I.C. there's a problem with the supply of your I.C. 24v dc.
I give you some steps for D.I.Y. troubleshooting
first,remove the cover of your TV loosening all screw at the back
secondly,look for the part number of the vertical I.C
thirdly,click this site to identify the pin connection of the I.C to determine the supply.
next,type the part number of I.C.then go down and click the view P.D.F...after that,click download to view... adobe reader is needed to download and see files.its free
fourthly,after you see the pin configuration, check the supply voltage of I.C 24vdc..if the supply is too low or totally dead,check the print line of PCB to find where the supply came from its usually found on secondary of fly-back..check all resistor and diode near to the secondary of fly-back
and finally if done all process replace a new spare parts if you found the defective one
thank you and good luck

Apr 04, 2011 | Televison & Video

1 Answer

Samsung HC-P4363 projection tv vertical lines on screen

well you should have your adjustment checked,,
then your vertical controll ic. and circuit..

more than likely is an asjustment problem, just open it up and look for the controlls and try adjusting it your self, if your unable to do this take it to a local technician

Jan 25, 2008 | Samsung HC-P4363W 43 in. TV/DVD Combo

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...

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.

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

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I have a 6 year old 32" Toshiba tube .tv. I have

thir is somecondensers on the tv needs to be changed especialy on pwer supply and vertical circuit it is easy fault but needs technication,,,but first be sure thir is no floresent lamp common with the same supply of the set

Dec 23, 2010 | Toshiba 32A14 TV

1 Answer


1.In this case the problem is usually found in the high voltage power supply.Most probably is the vertical IC defect.
Warning : This procedure has to be done by an expert.It is risky and can cause death to those who dont have knowledge in repairing.
A.) Open the unit and try adjusting the screen variable found in the flyback transformer. Notice any pattern on the screen of your tv.If their is a horizontal white line on the screen the defect is the vertical IC,replacing it can remedy the problem. Also check the 24v supply of the vertical IC coming from the flyback transformer.If their is no 24v get the resistance of the fuseable resistor and rectifier diode.Usually the resistor opens and the diode create short circuit.
B.)For most, make sure that their is no loss contact or cold solder on the board.

Jul 09, 2009 | Televison & Video

2 Answers

Vertical black bar down the middle of hitachi plasma tv

Ok if your hitachi TV dies with no power anywhere try this:
Some models have a kill switch under the bottom edge. It's like a gray switch like a small light switch press it back in and voila let there be LIGHT. Saves you at least a $200 trip to repair shop!!

Jan 05, 2009 | Televison & Video

3 Answers

Tv does not turn on

When you are technically Qualified only then you shoul solve this problem. because this problem may be because of power supply. Ok you must check power output on diode rectifier if it is ok then check the mains chord,which is directely connected to AC supply. And Then check the VC i.e. Volume Controle wire. your TV Set may be on Good Day Friend. And BE councious when you work with AC /DC Power supply or after opening the TV Set.

Jun 10, 2008 | Televison & Video

2 Answers

Tv shuts off and won't turn on

sound like vertical section problem, need to replace back same same # vertical ic& importance thing need to check component around ic like capacitors & resistors.then the vertical section be working fine. good luck!

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3 Answers

Missing vertical deflection on philips TV

TDA 8362B IC which have vertical freq.output is at pin no.43. (vert.osc) caution for fixing this problem minimise brightness to avoid crt burn. proceed as follows 1 if you are getting sawtooth at output of ic tda 8362 pin 43 then check 1 supply at vertical output ic from eht. 2 yoke connector loose . 3 check vertical output ic parts. 4 finally vertical ic. please check for normal output from power supply even though fault gets rectified just for protection. good luck.

Sep 22, 2007 | RCA 13R400TD 13" TV

2 Answers

Horizontal White Line

Sounds like something is getting hot causing voltage loss or drive pulse loss to the vertical IC. Maybe you have a bad solder joint. Try tapping the circuit board around the vertical section. A capacitor could be heating and opening up. Stargazer Also you might try using circuit cooler spray and make the problem show up.

Apr 19, 2007 | Sansui TVS2750 27"

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