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LG 42LF66 Problem with Screen

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milicis:
Changed all caps no solution  :73:

mali67:
i have just changed a 680uf 35v in the psu , has the same fault , it cured the problem
it may be partially hidden under a screw on heatsink

milicis:

--- Quote from: mali67 on May 29, 2012,16:43:48 ---i have just changed a 680uf 35v in the psu , has the same fault , it cured the problem
it may be partially hidden under a screw on heatsink


--- End quote ---

I have 35v 1000uf there under heatsink, changed, but problem still same .

mali67:
andy from ohm supplies pointed me in the right direction with a similar fault.


http://www.ohmsupplies.co.uk/epages/62027733.mobile/en_GB/?ObjectPath=/Shops/62027733/Products/KIT153
 
Click on the link and check all the parts shown, this is a very common problem with this board, I think the cap in the PSU threw you off a little. From memory of you unplug the ldvs the backlight goes off so that lead to inverter. This model seemed to be very popular for a 37" but.the same fault happends on the 42 with it being the same board (again, from memory, please check)

I can't be 100% certain of a full cure but it would be the 1st thing I did to the set.

Regrads
Andy

jordan:
Check this two 680uF capacitors on inverter board.

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