Have a philips model 50pfl3707f7 replaced power board and control board still comes on then goes off in 2-3 seconds

SOURCE: Philips Magnavox 37" LCD Flat

Disconnect the LVDS Cable that runs from the small signal board to the display panel and apply power,if the screen comes on,the Small signal board (aka Scaler Bd ) is the faulty board. other than that,all that's really left that has gone bad for me is the logic board.

SOURCE: FujitsuSiemens TFT goes out after 2 seconds

josexcruz, While you were busy replacing all the electrolytic filter capacitors did you think to closely examine all the other "LEADS" of the surface mount and through-hole components to make sure they ALL look bright and "mirror finished" ??? Try looking for solder joints that have thinner than hair circular thermal fractures around the solderd leads. May need inspection microscope (10x 15x) to see them. Also check the semiconductors package (body) for cracks or swelling due to thermal overstress. Let me know what you find!!! 12fixlouie

SOURCE: Acer AL511 15" I need advice in repairing this

Ok so what is your question exactly, I do not see a question in there?

Bud Martin

• 11361 Answers
• Posted on Oct 08, 2010

SOURCE: Philips LCD 170S Backlight problem.. only turns on

It can be DC filters caps with leaking/bulging tops, or they have high ESR, bad transistors or IC or transformers in the backlight inverter circuits, bad lamps assemblies. Please read below and look at the pictures of bad caps, failed monitors, and troubleshooting guides.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

SOURCE: I have a Philips 22"

Try to check this link http://www.tvrepairkits.com/ good day