20 Most Recent Philips 47PFL7422D/37 Television Questions & Answers

The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size. Search the site by type in the "brand name" to your device; [Exclude the model number], in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

http://elektrotricks.blogspot.com/ http://electrotechnician.blogspot.com/ http://electronicshelponline.blogspot.com/ http://homenol.blogspot.com/ Please visit these sites to get some details.

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electro-medical.blogspot.com/ http://electronicshelponline.blogspot.com/ In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

There is no button on the TV itself to replace OK. You must have a remote control.

Source for replacement PLHL-T722 board (when available): http://www.coppelltvrepair.com/p/942/plhl-t722a-2300keg033a-f-lg-power-supply-board-serviced-tested-50-credit-for-old-dud Source for repair of your own board (about 90% success, no service fees if board can't be fixed!): http://www.coppelltvrepair.com/p/886/plhl-t722a-2300keg033a-f-lg-power-supply-board-repair-service Good luck!

A problem like this could be a lot of things. What you are describing sounds like over heating or component failure in one of the boards.

If it\'s a backlight issue one section will be dim and will fade darker or lighter to the other section. It is not a hard on/off line. So if it does fade to dark on one side I would suspect either a faulty backlight bulb (non-replaceable) or a failing backlight inverter (can be replaced.)

your flourescent light bulb might be a little weak. the tend to get brighter as they warm up

I had same problem, replaced both inverter boards, works perfect, found them on eBay 70 bucks

Your mainboard needs to be replaced.

You can get one on ebay and replace it or get someone who can do that for you.

if you still have guarantee, it is covered, if not you will need to buy it.

If you have tried using different input devices, looked for loose contactsin power outlet, RC Jack, cable and connectors, the TV might need service.