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Equipment Repairs => LCD TV forum => Topic started by: pan on December 11, 2010,14:13:48

Title: LG LCD 42LC55-ZA (Dead set)
Post by: pan on December 11, 2010,14:13:48

Hi

This customer has said when the set was turned on there was sparks coming from the rear.
I Found fuse F100 (T8amp) o/c and a black area around Q103 (P9NK65ZFP) which was s/c there was also print damage around Q103. I have not yet replaced the parts.
 I have done cold checks around Q103 and cannot find any other component damage.
Anyone any thoughts / had similar prob.

Pan     

Title: Re: LG LCD 42LC55-ZA (Dead set)
Post by: pan on December 14, 2010,15:33:53

Hi
Just some more info Bridge Rec (D15XB-60) also found to be s/c.
Contacted a number of suppliers, but none able to supply Q103 (P9NK65ZFP).
Was told I need to replace the p/s the cost about £100.
Not what I wanted .

Pan

Title: Re: LG LCD 42LC55-ZA (Dead set)
Post by: sparky on December 15, 2010,04:23:07

hi
i beleive you can get a power supply kit try,wiltsgrove or ohmsupplies
dave

Title: Re: LG LCD 42LC55-ZA (Dead set)
Post by: Turnip on December 15, 2010,13:25:43

Hi,
Guess without shematic or piccy Sparkys thoughts are the biz  - if costly. Guess it's the  mains input and PFC that has popped, with Vestel there's still some hope - otherwise, with no info - doubtful - Chris.

Title: Re: LG LCD 42LC55-ZA (Dead set)
Post by: pan on December 22, 2010,12:41:07

Hi

I’ve ordered P/S from chas hyde.
Tried to get hold of Q103 but had no joy.
Pan

Title: Re: LG LCD 42LC55-ZA (Dead set)
Post by: sparky on December 22, 2010,13:38:28

hi
good will work ok then
dave

Title: Re: LG LCD 42LC55-ZA (Dead set)
Post by: primumnocere on February 02, 2011,16:05:58

I just had it on my table,
Symptoms:
faulty fuse and q103
Replaced Parts:
Q103 with P9NK70ZFP,
IC: NCP1207 SOIC8
R512 SMD 10R
R515 SMD 33R
Because of the fault on the MOSFET all small parts was damaged around it, please check them because you may damadge the new parts,
all parts from farnell and chs
 :051bye:

Title: Re: LG LCD 42LC55-ZA (Dead set)
Post by: Turnip on February 03, 2011,12:07:56

Nice one Prim,

Haven't yet met the set, so no piccies from this end - was it in PFC, like them Vestels  ? - Chris