Comments on: How To Test An LDR

By: lee tucker

lee tucker — Sat, 01 Jun 2013 15:42:49 +0000

thanks jestine ,email sent to you,lee

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By: Jestine Yong

Jestine Yong — Sat, 01 Jun 2013 15:21:04 +0000

In reply to lee tucker.

HI Lee,

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

Jestine

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By: lee tucker

lee tucker — Sat, 01 Jun 2013 09:25:47 +0000

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.

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By: Waleed Rishmawi

Waleed Rishmawi — Sat, 01 Jun 2013 08:29:10 +0000

thanks for sharing, that is a new information to me

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