Question about Philips 37PF7320A 37 in. HD-Ready LCD Television

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Philips 17PF8946A/37 burned IC.

I have that Philips TV and I can't make out the part number on an IC that is burn so bad. I really would like to have a dirgram of the set. But since I can't find that then it is just replace to part, if I can get the part number. That Part is located on the board 31391235667 or that what is on the board, and there is a paper that have 3139 188 51101 which I don't understand. Located on this board is an IC of some kind about an Inch long. It is attched to the biggest heat sink in the set, that heat sink is almost 3" long and about an inch high. There is a 12 pin IC connected to that heat sink which is burn, and smoke when the set is turned on. and thats the probllem.

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  • mitchell239 Jan 01, 2008

    I don't think it has anything to do with the Vertical Sweep. I can see AN7 and the last number on that IC, I think is H can't be sure of that. I think the reference designator is 7731. I really think this thing have something to do with the audio. Can't find any thing else wrong with that board, but something sure caused that IC to smoke.

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  • Master
  • 579 Answers

That sounds like the vertical sweep IC. Can you see a reference designator for this IC?

Posted on Jan 01, 2008

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Part Idenfication


hi,there is a notch or a hole on the top of the IC.
The pin adjacent to the notch is the pin number1
and the pin below no.1 is no.2
....no. the pins in the above fashion......all the best




happy christmas
take care bye & have a nice day

Dec 21, 2007 | Philips 37PF7320A 37 in. HD-Ready LCD...

Tip

42PFL7422D/37 Flat Panel LCD TV no picture no sound


I HAVE A 42 INCH PHILIPS MODEL 42PFL7422D/37 TV.

MY PROBLEM IS THAT IT HAS NO PICTURE AND NO SOUND.
THERE IS A GLOWING BACKLIGHTING.

THERE IS A BLUE LIGHT WHEN I TURN POWER ON THE TV. NO CLICKING RELAY SOUND.

MY PROBLEM WAS IN THE SLAVE INVERTER BOARD.

THE IC CHIP WAS BLOWN - SEE PICTURE. THERE IS A BURNED, DARK BROWN MARK ON ONE OF THE CONTACT LEADS ON THE CHIP.

THERE ARE $20 FIX IT KITS THAT YOU CAN BUY ON EBAY TO REPLACE THIS TINY LITTLE CHIP BUT IT'S RECOMMENDED THAT YOU SOLDER VERY CAREFULLY. I TRIED, AND DAMAGED THE BOARD SO I BOUGHT A USED ONE.

REMOVING THE IC CHIP IS PROBABLY BEST DONE WITH A HOT AIR SOLDER GUN. THEY COST ABOUT 50-200 DOLLARS.

AFTER INSTALLATION IT FIRED RIGHT UP.

IN ADDITION TO THE JUST BUYING ANOTHER INVERTER BOARD, I ALSO TESTED THE MASTER INVERTER TRANSFORMERS. ON THE POWER SUPPLY BOARD, I TESTED THE DIODES, AND RESISTORS, AND CHECKED THE FUSE.

AFTER ALL OF THE ABOVE, I UPDATED THE FIRMWARE BY GOING TO THE PHILIPS WEBSITE.

LUCKY FOR MY SITUATION IT WAS NOT THE MASTER INVERTER, MAIN , TCON, POWERSUPPLY, OR DAMAGED BONDING ON THE LCD PANEL ITSELF.

TOTAL COST $50.

GOOD LUCK!!!

on Dec 23, 2011 | Philips Televison & Video

2 Answers

I HAVE THE RED BLINKING LIGHT WITCH INDICATES THE CAPS ARE BAD HOW DO I FIND THE ONES THAT HAVE GONE BAD, THE MODEL NUMBER IS 42PF9431D/37


which capacitor is bad if you find out there is no menstion on capacitor check and replaced with same no.its look like 220uf/450v.or some els.

Oct 17, 2010 | Philips 42PF9431D/37 TV

3 Answers

I have a 37" Philips (37PF9431D/37) flat panel tv. It won't power on. When you plug it in you can hear a click the green light stays on for a few seconds then goes out. I've checked the power board for bad...


i am having the same problem. My Phillips 37" 37PF9431D/37I LCD High Definition TV won;t turn on. When I press the power button i hear a click and the green light comes on for a couple of seconds and then the red light appears. I can;t figure it out. Did you find a solution?

May 20, 2010 | Philips 37PF7320A 37 in. HD-Ready LCD...

1 Answer

LC3760N power light blinks


Replace the whole board,LCD usally the IC is dead,not like DLP the capacitors,burn most of the time.

Sep 22, 2009 | HP LC3760N 37 in. LCD HDTV

1 Answer

My big screen projection philips tv screen is bleeeding


Mark, if red & blue are seperated from the normal image then the convergence circuit has failed, this means the IC`s will have to be removed and replaced as well as any resistors that may have burned when the chip(s) went bad, the alignment that must be performed after the new IC`s are installed can be a pain especially without the service manual, I`d advise a tech for this one, video-tek

Feb 04, 2009 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

Magnavox 42MF230A/37 Plasma TV should i fix it? ?


you will need that part to repair yours. i recomend using the heatsinks from yours. u need to check the FETs on the board that drives that one before u power it up, or u could damage the new part.

Dec 05, 2008 | Philips Magnavox 42MF521D/37 Television

1 Answer

Philips 27p6441/37 has a foldover


Bad capacitor / IC in vertical circuit...usually a shop repair...
If not corrected,could get worse in short period of time,.....T.

This model also requires an upgrade kit for future reliability...
Philips part number 483531057673 senior tech only.......

Jan 21, 2008 | Philips 20PT6441 20" TV

1 Answer

Problem


deko, heres the number for Sanyo parts, 800-877-5032, you can order the service manual there, part number for manual is KTDS27425. I`m sorry I don`t have it to look up the IC but it will be very usefull to have the manual, I think it`s around $20.00
good luck with it, BMW Rider

Jan 14, 2008 | Sanyo DS27510 27" TV

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