Question about Panasonic CT-2784VY 27" TV

1 Answer

Vertical ampliphier IC

Thank for the tip.
Where is the vertical ampliphier IC located ?
Where do I get one ?

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  • 20gar08 Sep 02, 2008

    Thanks for the help. Will follow up on it .G.S.

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The part you need is similar to the one in this link, and is mounted on a heatsink.
The IC is available from this website. The part you need might have a different number, make sure when you order it, provide the correct part number.
Good Luck.

Posted on Sep 02, 2008

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When i turn it on the screen has lines in it and it shuts off


That symptom is called vertical problem.The problem is located at the vertical section of your television.Maybe there's a leak capacitor around the vertical ic,or loose connection of vertical ic.or no B+ supply in vertical ic,and finaly the vertical output ic is deffective maybe it is shorted that why the power shutoff. So its the cause of the problem and need to repiar by the repair technician.Thanks...

Aug 21, 2011 | iLO IWT3206 TV

Tip

Sony TV Error Code - Four blinks.


You try to turn on your Sony TV and nothing happens. Then you notice that the standby light is blinking. Counting determines that it is four blinks about a second apart followed by about a three second pause. Perhaps you see a thin white line in the middle and across the screen.

Your problem is that you have no vertical deflection. Check IC1509, Q1505. These are on the deflection board. If you are not familiar with replacing discrete components look at my tip at http://www.fixya.com/support/r4751428-fix_no_vertica_drive_problem for more help. If you cannot solve the problem using my tip you may just want to purchase a new board.

Fortunately these days circuit boards are not that expensive. I would recommend replacing the defective board. The board with all the power supplies in a Sony is generally the "A" board and contains the High Voltage power supply. This is also where the vertical IC is located. You can determine which board you need by following the four wires from the yoke (coil on the neck of the CRT) to the board where they are plugged into. This is the board containing the vertical IC.

Two of the best places to get the board are http://www.encompass.com or http://www.shopjimmy.com . Prices are similar but both sites are trustworthy and will allow you to return the boards if they are not the problem.

If you haven't replaced a circuit board I have a tip at http://www.fixya.com/support/r6981868-replace_circuit_board_in_modern_tvs which explains the process and should be helpful to complete the repair.

Thanks for using FixYa and for the great rating. Please consider a testimonial. Thank you.

hardrocko

on Jan 13, 2011 | Televison & Video

1 Answer

Philips tv 20pt1782 want service manual


hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me..

Jun 10, 2010 | Lexmark All-in-One Printer with PictBridge

2 Answers

Thin vertical line, high tension problem ? IC location?


Check the picture below to find the vertical IC. The markings on the body are: LA7837.


5e82824.jpg

Mar 06, 2010 | Hitachi 32UX59B 32" TV

1 Answer

The image is compressed into a thin vertical line about 2-3 inches thick. The very top of this line is more brighter than the rest. I've read the problem could be the vertical output IC. I've downloaded...


Sounds like the vertical IC has gone out. Possible with some capacitors. Usually, when you take the back off, Its located on the right side towards the front. It usually has about 10 legs. I can't remember off the top of my head.

Dec 15, 2009 | Hitachi 32UX59B 32" TV

2 Answers

Please help


This is a problem with the vertical circuit and is usually a defective vertical IC. If you can solder, locate the vertical IC (small flat IC attached to a heat sink with about 9-11 pins). Try resoldering the pins on the IC. If that fails to resolve the problem, replace the IC. This IC will be marked LA7837 or something similar. Keep us posted. Dan

Jun 08, 2009 | Sanyo DS32224 TV

1 Answer

TOSHIBA 50H72 50IN. REAR PROJECTION TV BLUE COVERGANCE PROBLEM


you have a convergence ampliphier ic failing that will need to be changed and then adjusted
average repair cost for this are 280.00 to 320.00

Jan 20, 2009 | Toshiba 50H72 50" Rear Projection...

1 Answer

Emerson EWF2702 TV Problem


Hello yyimerr1,

This is a vertical deflection problem, These are the possible causes:

1) bad vertical coupling capacitor
2) bad vertical output IC
3) bad vertical driver IC
4) bad CRT deflection yoke

Troubleshooting needed:
1) using the TVs schematic locate the driver IC the output IC and the CRT yoke transformer.
2) using an oscilloscope look at the vertical driver signal it should be a sawtooth signal from the driver to the yoke (increasing in amplitude for each section, i. e. driver and output).
3) if no sawtooth patter is seen that is your problem, look for the component in the section where signal is entering but nothing is coming out.
4) replace the components

Now let me tell you something, don't continue to play the TV with the line present with brightness applied, this will burn the image of the line into the phosphorous coating of the CRT.

I hope this helps

Thank you,

Shuttle83

Nov 01, 2008 | Emerson EWF2704 TV

1 Answer

Philips TV showing horizontal lines model 27pt6441/37


You likely have an elevtrlytic capacitor bad on the B+ line to the vertical ouput ic. If you continue to use the set like this it is likely the vertical ouput ic will fail.

Jun 26, 2007 | Philips 27PT6441 27" TV

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