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Vertical chip Can you tell me what this chip does for a TV? Sony CXA1279S

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  • JAZCAT Apr 11, 2008

    Can you help me to find a website that shows different chips and what they do?

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That chip is known as a sound processor, not a sound amp but a processor. Nothing to do with the vertical.

Posted on Apr 10, 2008

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My 65 inch sony tv half the screen is having colors like 3 d


Your Convergence ICs have failed. It is very common on rear projections. The solution is to replace the STK chips, check fuses and the resistors next to the STK chips. Replace as necessary and re-align via the service menu. It is about a $300 repair at a tv service center. You will need the service manual if you decide to do this yourself.

Try This:
When you notice the symptons Use this simple test to verify.
Go to the users menu on the tv.
Look for the converge option probably under setup or video setting. Converge is short for convergence to align the red and blue colors to the green color.

If you cannot move the red either horizontal or vertical, then the STK chip has failed for red section.
If you cannot move the blue either horizontal or vertical, then the STK chip has failed for the blue section.

If you can move both in each direction then the problem is something else.


Note if one STK chip fails, you replace both regardless.

Feb 20, 2011 | Sony KP-51HW40 51" Rear Projection...

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

The TV wont turn on


It depends on your knowledge and skills to fix this tv problem.
Power light 4 times blink shows problem in vertical deflection section and most probably vertical output chip got defective or not getting proper voltage supply to function correctly.
Check vertical output IC connections on main board and resolder if found dry/ colder solder.
Hope these info will help you to fix tv problem.

Jul 15, 2010 | Sony FD Trinitron WEGA KV-27HS420 27" TV

1 Answer

Vega kdf-e55a20: All I see are Vertical colored lines across the entire screen. Could you tell me what the problem is and a potential solve?


Hi , it seems you are experimenting a light engine problem.Here's how your tv works: http://www.youtube.com/watch?v=ZLLHnQ4y-wo Basically there's 3 LCD chips that create the colors and image by blending together.When these chips start to melt you will get those blue spots, pixilation even vertical lines.You will need to replace the light engine,found the one you need here http://www.discount-merchant.com/SONY-1-788-156-11-p/1180225.htm?Click=48173 Have a blessed one!

Apr 21, 2010 | Sony Grand WEGA KDF-42WE655 42" Rear...

1 Answer

I have a Sony KV-27S36 purchased mid to late 90's. I suddenly have sound but no picture. At first, I could get a picture by turning it off and on and letting it warm up, now I cannot even do that. ...


yap! That sound vertical problem! just solder all old parts in vertical section and check yoke if have mold? Check all looking old's electrolytic capacitors and change that if nothing happened tha'ts the time to change vertical IC.

Sep 24, 2009 | Sony KV-27S36 27" TV

1 Answer

The picture is larger than the screen. I cannot see all of the text at the top or bottom of the screen.


this is called over voltage in vertical . some
WEGA serise have ADJ for this when the
vertical chip / or a cap gets weak.
the adj is in side the tv sorry

Jun 28, 2009 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Sanyo DS27880 TV, vertical sweep is gone, sound ok


Check for cold joints on the vertical chip. DS27880 sets use a la7841 typically.

If soldering doesn't fix it, simply replace the vertical as well as the 1ohm 1/2W resistor and
the fast recovery general purpose (nte556 equiv) near the flyback.

Mar 24, 2009 | Sanyo Televison & Video

1 Answer

Power light flashes 4 times


The 4 blink code usually indicates a loss of vertical deflection. Check the solder connections on the vertical IC. If the connections are OK, replace the chip as it is defective. This chip will be a small flat IC with about 1 pins or so attached to a heatsink. It will be marked LA3847 or something similar.

Keep us posted.
Dan

Jun 12, 2008 | Sony FD Trinitron WEGA KV-27FS100 27" TV

1 Answer

Green Convergence


Hello, I have the same problem and was told that I needed a new convergance chip. They told me who deals in the problems where I live, (TV Repairman) It will cost me 300 for a six year chip and 350 for a life time chip! I was told by the repairman that these chip only last up to 6 years if they are not lifetime. I see alot of this same problem going on right now. These tv were manufactured in 2001, but no one was ever told that these chip would need to be replaced in so few years after spending all that money on the TV. Pasonic would not tell me the price of the chip nor how to get one,were very unwilling to help with the problem other than telling me who do go to locally, so you would have to go thru a tv service where you are.

Jul 23, 2007 | Panasonic PT-47WX49 47" Rear Projection...

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