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How To Test An LDR

By on May 29, 2013

Here is an article on “How to test an LDR”. This article is recommended by Beh. Please click on the photo for more information:

test ldr



  1. Waleed Rishmawi

    June 1, 2013 at 4:29 pm

    thanks for sharing, that is a new information to me

  2. lee tucker

    June 1, 2013 at 5:25 pm

    hi jestine,im fixing a 19"lcd tv,the problem on this tv was that a child banged the back of this tv and i think caused a short between the psu and the rear of the lcd panel,there was 2 round burn points on the back of the lcd casing on opening,.the short happend between the minus of the bridge rectifier and the b+ of the smps transformer,there is what i think is a fused resistor its marked "R111" on the board,coming from the + of the bridge, trace goes to the filter cap inbetween filter cap and b+ of the smps there is this "resistor"it looks like a pico fuse and has a mark on it "2a"its blue in colour ,on continuity test it tests open circuit,on resistance test it shows 10.35 K OHM on my fluke 87v in autoranging mode,is this part failed?is it a fused resistor or a normal pico fuse?thanks jestine,lee,ps i can send you a picture of the part if you need it.

    • Jestine Yong

      June 1, 2013 at 11:21 pm

      HI Lee,

      Appreciate if you could send to me the photo and on which location-thanks a lot.


  3. lee tucker

    June 1, 2013 at 11:42 pm

    thanks jestine ,email sent to you,lee


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