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Philips 170s LCD Monitor Shutdown After “On” For A Second

By on April 7, 2008

This Philip 170s LCD Monitor was repaired by someone before and the problem was the display appeared for less than a second and then shut down. This usually prompt to a failure in inverter board or bad backlights. After opened the cover and test for the high voltage transformer, i found one of the transformer secondary winding has an open circuit. I tested it with ohmmeter. Even if you set your analogue meter to the highest range (X10 k ohm) there is still no reading!

Due to the no availability of the high voltage transformer spare parts i used the modification method to solve the problem. It took me about 15 minutes to completely finish the job. Now the Philips 107s LCD Monitor works beautifully! The modification tips is mentioned in my bonus reports in my LCD Monitor Repair Ebook. 

philips 107s

faulty transformer

high voltage transformer

 philips 107s lcd monitor



  1. Thomas

    November 1, 2010 at 2:41 pm

    I got the same screen well a "170S6FS/00 "and same problem, what do i need in skills and stuff to repair it ?

  2. admin

    November 2, 2010 at 3:39 am

    HI Thomas,

    Sometimes the display shutdown can be cause by dry joints in the high voltage transformer, bad filter capacitor, and one of the backlight have problem. You need to have some basic electronics to perform such test as it involve ac supply which is dangerous. Do you have any experience in electronics repair?


  3. Thomas

    November 4, 2010 at 1:26 am

    Not any, but i learn fast. Thanks for the info, i will continue my investigation and let you know.

  4. Ronald Hiltz

    November 18, 2010 at 11:03 am

    Hello, this is a quite morning and I have the time free, and I have 8 philips 170s LCD monitors that need to be fixed some how? They all have the same bad back light transformer as your artical mentions. What I would like to find out is how to go about jumpering around the faulty transformer and how to disable the feed back circuit on this board as the artical mentions?
    Thanks in advance if any one can help direct my efforts.

  5. admin

    November 19, 2010 at 8:01 am

    HI Ronald,

    All the modification i have compiled it into an ebook at


  6. Greg

    July 7, 2011 at 3:30 am

    Hi Jestine
    Did you actually wire in the windings in the picture or have they just been drawn on the photo? Thanks Greg

  7. admin

    July 8, 2011 at 3:25 am

    H Greg,

    I did not rewind it.



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