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I NEED TO KNOW IC 8891CPBNG6KU3 COLOUR RELATED PINS

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T-con diagram


Hi Simba,
Generally there is no need of the diagram in AS15 colour disorder cases. It is 48 pin smd soldered on the TCON board. Try resoldering all the pins first. If it does not work simply replace the IC. I hope it helps.
Good Luck.

Mar 26, 2016 | Televison & Video

1 Answer

Display & color problem


Use a deguassing tool to clear the picture tube in case there was a failure of the deguassing posistor or a lightning flash. If there is no result the fault can be related to a failure in the colour processing section.

This can be the Luminance /Chrominance IC or a simple dry joint. Check the colour system settings( be it PAL/ NTSC/SECAM) before you open the set.

There is a high possibility that the components over a period of heating and cooling, tend to bring on a problem of dry soldering. So my advice is to check the set for some loose joints that have played on to give you these erratic shut downs or poor performance.

The best way to check for loose connections is to tap lightly when the set is powered on , If there is change while tapping then it seems that there are DRY solder joints. Remove main plug, the covers - with caution of high voltage, check for dry joints, use a good soldering iron to solder all suspected points.

Sometimes the fault occurs when the set warms up, if so you can simulate the heat using a hair dryer on the suspected areas, try with the power supply, distribution, Processor controller, driver controllers on the A/V related sections. Also the use a FREEZE-IT spray can simulate the components to cool and show up the fault.

Based on the above method you must be able to locate the area of fault and solder the sections. Sometimes large IC's- ones with more pins- tend to have drying in some pins and so cause faults related to the IC's protocol. Have a rough idea of looking into the areas to reduce the time of probing.

Thank you for using Fixya.


Sep 02, 2011 | Sony FD Trinitron WEGA KV-21CL10 21" TV

2 Answers

Description of all pins in ic TDA11105PS/N3/3/AE1


5 supply Volt missing in IC TDA 11105ps/N3 used in beston tv

May 13, 2011 | Televison & Video

1 Answer

Pink color appearence when swith on tv for 1 minutes & wringles form on the screen


Hello

Pink colour denotes the absence of green colour dispay in your picture tube. I hereby gies an approximate voltages at the three cathodes of your picture tube socket solderings, and you just measure the voltages with reference to this. The voltages are approximate, and can chage up to 2% up or down.
Green Cathode = Pin number 9 [161VDC approx]; Blue Cathode = Pin number 8 [162VDC apprpx]; and Red cathode = Pin number 10 [157VDC approx]

If any of these voltage differes, the clolur related to that cahode will also rise or low, thath is if the cathode voltage goes very low, that clour will be prdominent, and if it goes high, that colour will not be there.
In your TVs case, the green cathode voltage now will be high. t may be due to a soldering loose to either to the picture tube base socket or at the terminals of the related transistor or Ic. It is best to resolder the suspected loose soldering points by applying a little more solder, as we in service field also do. It is very difficult to locate the exact loose soldering point and so I advice you to do so. If needs, replace the colour output transistors, of other devices if used. Just look at the voateg at pin number 9 at the picture tube base card. Resolder all the picture tube base socket pins. If you wants any more calrification, contact me through Fixya. Ok.

Nov 25, 2010 | Sony KV-T29CF1 TV

1 Answer

No green and yellow colour


Hello
If you see the picture in yellow colour, means that there is no blue colour output from the video drive section in your tv, Yello is the mixtrure colour of red and green. Green is actualy there. blue colour is absent.
To detect this fault, you must open your tv. Just look in to the video output section, can be located at the picture tube base card, which is plughed into it diretly. See for any loose soldering points there. Check whether transisotors are used for red, green and blue output stages, or an Ic or three seperate Ics are used for this purpose. Anyway, blue catode of your picture tube pin gets a hig voltage, and so the blue emission is absent. You just check the voltages at red,gree and blue catodes, at the respective picture tube pins, which can be taken at picture tube base card. All of these three pin voltages must be somewhat equal to each other. In your case, no voltage at blue cathode will be higher that the other two. Check for the reason. It may be due to an open video output transistor [blue], or an Ic, of one Ic if used for the three colour outputs. Check and replace the same, will rectify your problem. Ok
If you have andy difficulty, get it to me through Fixya. Ok
Gopakumar, India.

Nov 21, 2010 | JVC AV-27230 27" TV

1 Answer

No clour pic


check colour ic .....
check chroma section....
check power supply related to chroma and colour ic..
set the pre set @ EHT....

Oct 25, 2010 | Toshiba 36A40 36" TV

1 Answer

I have colour issue with my Samsung CRT 55V monitor. The main colour look green and also the Red and blue works It seems to be an issue with the RGB cables soldered to the wrong pins. Please guide..


I think this problem might be VGA cable or colour IC of the monitor,so please if you can change these two things ,so very well, other wise you will go to the service center.

JAIN_IT {INDIA}

Sep 26, 2010 | SAMTRON 55V 15" CRT Monitor

2 Answers

Memorex DVD Player


hello...please contact her dealer and try to replace the recorder if ther's a warranty...if not refere to the user manual.,and carefully read it regarding first useage...please tell me how it went...good luck...Ron

Mar 07, 2008 | Memorex MVDR2102

2 Answers

Sharp 25" tv unknown model (no av in)


It is a simple trouble, tv has got dry solder joints in the vertical deflection circuit. Resolder vertical output ic pins and related components, this will be okay.

Dec 17, 2007 | Sharp 25R-S100 25" TV

1 Answer

Red colour missing


- A bended color pin at the VGA connector. (If pin one is bend then there would be no red color)

- A defective VGA signal cable. If the internal wires were broken then there would be missing colors. You can check if the signal cable is good or bad by doing a continuity test using a multimeter.

- Dry joints in the CRT board such as in the CRT socket pins, video pre amp and driver IC and even at the connector pins. In fact this problem contributed about 80% of Monitor color problems. Applying fresh solder would usually solve the color problem.

- A defective IC either in the Video Pre-amp or Video Driver IC.

- Faulty components in the CRT board. It could be a shorted driver transistor or even electrolytic capacitors that the ESR reading had shot up!

- A bad CRT socket. Sometimes decayed glue could cause the internal pins rusted and thus affecting the colors. Replacing only the CRT socket would definitely solve the problem.

- A weak or a defective picture tube (CRT tube). Yes, I do came across one of the electron gun (most probably the cathode materials had used up) in the tube faulty caused a missing color in the screen. There’s no way to repair this type of problem-the only way is to replace the CRT tube.

- In the newer type of Monitor, color setting is save in the EEPROM IC . Thus, if the EEprom data is corrupted, you would also get a missing color! The only way to repair it is to reprogram the IC or use a soft jig to tune it back the color setting.



Article Source: http://EzineArticles.com/?expert=Jestine_Yong

Dec 05, 2007 | Compaq P110 21" CRT Monitor

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