Question about Philips 42PFL7422D 42 in. LCD TV

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42PFL7422D/37 philips 42 LCD has no picture or sound

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NO PICTURE BUT HAVE SOUND

Posted on Oct 11, 2010

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Posted on Jan 02, 2017

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SOURCE: Philips 42PFL7422D/37 42-Inch 1080p LCD

If the backlight of the LCD-panel does not function, (no picture) then Master and/or Slave inverter are defective. Inverter boards are screwed to both sides of the LCD display, if they have revision 1.2 boards then they will need replaced with revision 1.3 boards.

Posted on Mar 18, 2011

  • 8457 Answers

SOURCE: has sound but no picture

Replaced the LCD inverter board,to get picture back.

Posted on Dec 17, 2009

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2 Answers

How can I fix black screen on Philips 42" LCD TV?


chances are it is cracked solder joint on internal board,
check link below, press the helpful button

http://www.repairfaq.org/samnew/tvfaq/tvtmmqcs.htm

Jan 24, 2016 | Philips 42PFL7422D 42 in. LCD TV

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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

1 Answer

No picture on my philips 42PFL7422D/137 lcd I have already replaced both master and slave boards and my picture returned. After about a month or two the tv started to make a high pitch whistling sound...


do you have sound but no pix?its the video board if you have neither it will be the board where your coax and audio inputs connect...just a matter of getting the right boards off of e-bay GOD bless

Sep 18, 2017 | Philips 42PFL7422D 42 in. LCD TV

2 Answers

Philips 42PFL7422D/37 42-Inch 1080p LCD HDTV Picture went out but still have sound. Any tips on how to fix it?


If the backlight of the LCD-panel does not function, (no picture) then Master and/or Slave inverter are defective. Inverter boards are screwed to both sides of the LCD display, if they have revision 1.2 boards then they will need replaced with revision 1.3 boards.

Feb 16, 2011 | Philips 42PFL7422D 42 in. LCD TV

1 Answer

42 inch philips lcd no picture no sound


Sometime a no picture, no sound still has the power light or some other led blinking. The blinks might be an error code that will isolate the problem.

In general on LCD TVs with no picture, no sound, no blink code, the main power supply has failed. The capacitors weaken and when bad enough, damage the power supply.

If there is a blink code, the most, if not all of the power supply is OK and the blink code could point to the problem.

Jan 19, 2011 | Philips 42PFL7422D 42 in. LCD TV

1 Answer

Converter for myTV


This all depends on what you want to do. watch TV, play games , watch dvd's... there is no region code associated with the TV, but you might want to check if your TV supports pal and ntsc.

May 04, 2010 | Philips 42PFL5332D 42 in. LCD Television

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