Question about Philips 47PFL7422D/37 Television
Hello, i have a phillips lcd tv 32pfl3403d/27 there is no power to tv. No lights come on. I checked cord with meter and working fine. The fuse to power supply and caps are fine. I bought new power supply board and installed it. I have some voltage reading now on some of the wires but the number 12 on power board that connects to the inverter board has no readings. Any suggestions on what to replace. The wires do not look fried. Thank for your help
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.
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.
Posted on Jun 25, 2017
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Posted on Jan 02, 2017
Check the main fuse
If that is ok look for puffed up capacitors on the power supply
Check the 1000ufd @ 35v change them to 1000uf @ 50volts
Posted on Feb 08, 2009
I had the same problem had to buy a s - video lead then when connected hold in function button n f4 to send the signal
Posted on May 05, 2009
SOURCE: I have a phillips lcd
U have all the tools like a soldering iron,a desoldering pump or a roll of desoldering braids,a roll of solders,also can do basic soldering and understanding of basic electronic?Yes,take out the tv power supply board,by checking it carefully ends to ends looking for dying capacitors parts,it alway bulging up on it tops or puffing up on it tops are the most common failer on the tv power supply board.By replacing all those dying capacitors,u can check the Zenith power supply board for capacitors for parts to replaced.Capacitors are very important must have the same exact micro ferit ok the voltages 5 or 10 voltages higher no problems.Take out capacitors and putting in different capacitors or new capacitors to a board must make sure polarity - + putting it in correctly to the board or will causes explosion,kill that new capacitor and more damaging to that board or the unit u tries to fix.
Posted on Feb 17, 2011
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