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RDENCA257WJQZ PS board with a defective IC4731. what is the part number of this IC?

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Anonymous

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SOURCE: m7vkq version-2.0 mother board i\o controllerr ic number

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Posted on Sep 08, 2009

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32"LC32GP3UW no picture no sound power light and the opec lights blinks every few seconds. Thanks for your help


Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Nov 21, 2016 | Televison & Video

4 Answers

Standby light


Ok sounds like you need a technician to look at it due to a transformer failure. Keep me posted
Thanks,
Lee

Jun 16, 2008 | Sony FD Trinitron WEGA KV-36HS510 36" TV

1 Answer

Model 42pfl3609/98. Why doesn't it turn on?


With all of those bad parts on PS sure there are more. Why not replace the board with a new one?

Mar 29, 2013 | Televison & Video

2 Answers

Turned on the tv this morning and heard a pop, now we got sound but no picture.it's a mitsubishi vs-50803 model


A real comman problem with that set is vertical IC will blow, burn a hold in the board itself, Part Number is a LA7838 Vertical IC, located right center mounted on a heat sink, and will about seven legs on the IC,, on defection board.Remove back and see if that IC is in pieces?

Oct 14, 2010 | Televison & Video

1 Answer

Screen has changed to look like you should be wearing 3D glasses - blue/reds showing and out of focus. Is it a new bulb? Thanks!


thats come from your convergence module board whers is two ic
they probly defective and the tansistor for the 40 volt regulation
they need to be replace plus a verification of the circuitry arround
it, you will need a technician to do so...
hope that will help
regards alan
PS ; i for got if its a dlp tv for got that and look for the color wheel
and the lamp,,, soory Alan

Oct 05, 2010 | Sony KP-57WS510 57" Rear Projection HDTV

3 Answers

I have a 2005 toshiba 56hm195 with thin lines running through it


if retrace on screen maybe the capacitor is running defective.on the screen. consult that problem to Toshiba service center.

Jun 20, 2010 | Toshiba 56HM195 56" Projection HDTV

1 Answer

Power Shuts off after 30-45 minutes


I will say that the part that you bought could have been removed from another LCD and it might not be working properly due to components that become defective when they overheat.
It looks like there are not service parts or they are difficult to find.
Most power supplies I've repaired have components that failed after about 1500 hours of use.
The only way to get the LCD working is to repair the power supply to the component level instead of swapping it.
In about 95% of the time the power board is defective.
Let me know if you need further assistance.

Aug 16, 2008 | Akai LCT3201AD 32 in. LCD Television

1 Answer

No sound


Hello sgaffar,

This may mean that you audio detector/amplifier IC in the TV was rendered defective by an electrical surge. Now I would check to see if the circuit was getting and sound from the audio detector (which might be in the IC also). After checking to make sure the bias circuits are ok I would suggest replacing the IC.

You will need a schematic, a multimeter, and if possible an oscilloscope to troubleshoot this problem.


I hope this helps,

Thank you,

Shuttle83

Aug 16, 2008 | Orion1934 19" TV

1 Answer

Hi there, you seem helpful, I have a Proscan PS61670 rear projection TV, I believe i need to replace the IC however in my service schematic it shows the "Digital Convergence IC" on the board as a STV2040T,...


Thats an obselete IC. Your model came with two chassis designs the CTC195 and the PTK195 could you verify which chassis your model has and I will try to cross refernce it to a substitute part number for you. Please respond to this same post when replying.

Jul 27, 2008 | Proscan PS61670 61" Rear Projection...

2 Answers

TV turns off and won't come back on


You have a pair of defective IC. Part Number stk392-110
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Dec 08, 2007 | Panasonic PT-47WX53 47" Rear Projection...

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