Question about Philips 47PFL7422D/37 Television
TV turns on lights on but no picture or sound
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: tv wont turn on
The set has a main board that id bad.Need to trouble shoot the set to see which board is bad. Don't try if you are not good with shorting ouit pins or takeing DC voltsges.
Posted on Aug 19, 2008
I have a philips pf50 9630a/37 tv may come on or it may not unplug it and take a chance then comes the 6 steady red flashes followed by 3 rapid red flashes the screen had been completely replaced by philips a year and a half ago
Posted on Apr 20, 2009
Most likely the TV has a power supply related problem. The most common thing to go out is the circuit board that supply power to the screen. Commonly called a Backlight Inverter Board.
I can't say it's 100% the problem because I can't actually look at the tv over the internet.
If by chance the TV is still under warranty, go that route.
If not under warranty and If you have some electronic experience, you can purchase a Service Manual over the internet and diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you the flashing red light codes, circuit diagrams, test points, and part# lists. Usually, cost under $20.
I hope I shed some light on the subject for you.
Posted on Jul 01, 2009
I have the same problem with my TV. I haven't verified this yet, but someone I know who's a electronics genius told me that its the buttons on the TV (power, channel, volume, etc.) He said at the factory many of the "button boards" were tightened too much and cracked. When you turn the TV on, the clicking noise is a loose connection. He said it's easy to replace yourself, and about 30 bucks on ebay. No promises though.
Posted on Sep 20, 2010
SOURCE: turn tv on has sound
The red light usually indicates a power section problem. It would be something just about gone or overheating.
You will have to take this into a repair shop or a Phillips repair depot. You really should get an estimate for this before commiting to getting it fixed. Depending on the year it may have a sperate power board (cheapish to fix) or might require the main board to be fixed (lots of $$$) Worse case is that it can cost as much to repair as just buying a new replacement tv. So get the repair estimate and check around for replacement costs and let that be your guide as to which way to go with this.
Posted on Oct 10, 2010
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