I have the full back off and have removed cover from TCon board Philips 52 inch LCD. We have sound, backlight but no picture. I have small replacement part kit from supplier with nearly a dozen small pieces to replace. Do I really need to unwrap foil and disconnect tape like plugins, or can I just replace parts?
Take a look at this youtube video
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Disassemble procedure to many popular brand TVs and other devices are given in detail with illustrations.
SOURCE: I have a Philips 42PF9630A/32 Plasma TV, red led blinks 7 times
No,body can cofirm u have to troubleshoot change the boards to know the problem.
SOURCE: I Have a Philips LCD TV model#30PF9946D/37.
Oh yeah, you can most certainly change the power supply by yourself.
It's easy to locate - just follow the power cable - and easy to replace.
Only make sure to let it discharge before you operate it. 10-15 minutes disconnected from power should do.
However, there's no guarantee that the problem is in the power board.
There is a very good chance it is, in fact, not there.
There's another board which commonly fails on many plasma TVs and the effect is exactly as you describe. It's called Y-Sustain board and you can tell which one it is by looking at the side of your TV and seeing which large board has manny plastic connections that enter the display on the side.
That board often has one or two fuses on it - I'd check those first.
SOURCE: No picture on Philips LCD TV
One very common problem encountered on many Philips models, old and new, In some cases, the SSB board has to be replaced as the resistor on the PCB on the back of the CRT had to be fixed. In other cases the Y Sustain board had to be replaced. If the problem is not due to these two issues, then the capacitors will need to be replaced as they only have a fixed guaranteed life. Thus, it would be wise to take out an extended warranty on Philips due to this common repair issue which often occurs after the limited warranty has ended. Or you could just call your local repairman. There are lots of websites on how to fix it yourself on google. There could be many reasons. Hope this helps!
SOURCE: my philips lcd tv has sound but no picture what is
change the backlight (cold cathode light) on your monitor.. If you are able to open the back of your lcd monitor carefully, the backlights are located at the upper and the lower part of the edge .. replace it with conventional cold cathode lights(protective tube was removed)... there are also instances that backlight was good but the ballast transformer is burnt. Replace the ballast. Its very cheap to replace that.
SOURCE: Philips 42PF9630A/32 Plasma TV RED led blinking 7 times
Are there any blown caps on the PSB-power supply board. Most sets have sammy boards and they used very shotty caps. If there are no visual clues being a poped cap at the top (X) they simply often do vaporize and dry out. The YSUS-Main and the 2 Y buffer boards control the picture OSD-on screen display. Your not getting any of that. So power supply is where you start first. The YBU-upper and the YBL-lower control the upper and lower OSD the Ysus main control both of them. Usually if you have one in the door you have to replace all 3. But not always. If you were to replace any of the boards I would replace the YSUS-Main, or get the board reworked at a pc repair shop that does board level test and repai. Its more cost effective.
Best Regards and Semper Fi
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