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LG 32LC55 LCD TV inverter problem

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jkost:
Hello tv tony and thanks for the PDF... months ago Contrast John said



--- Quote from: Contrast John on April 23, 2009,13:37:09 ---Hi all
Thought this was going to be an easy one, but after replacing the domed and split electrolytics on the 5 volt line (power board) I was left with exactly the same symptom - relay clicking continuously at about 10 second intervals but the set not starting. While the relay is energised all voltages marked on the psu output socket are present and correct. Suspect some damage further downstream on the signals panel, possibly a damaged regulator or corrupt eprom. Has anyone encountered this situation before, or does anyone have a service manual / schematics for this model. Any advice would be much appreciated.
Thanks
John.

--- End quote ---


and you responded



--- Quote from: tv john on April 24, 2009,06:40:01 ---Go to the sm eeprom ic that sits near the LVDS plug on main pcb.Short the data & clock pins (?) on this ic,switch on and when relay clicks remove short.
 Tv should come on,enter service mode(sorry no info),set tuner to auto & select reset.
Thats all the info I have and never had to test it out.

Best of luck  tv john.

--- End quote ---

i hope  i'm not looking at the wrong posts... please give me more details because i don't think i understand the connection between the two problems.

since the replacement of the power supply didn't fixed anything i was about to believe that the CCFLs either they draw too much or too less current and the TV goes into stand by, but currently i don't have any replacement CCFLs so i can be sure.

Contrast John:
Hi jkost
Think you`ve been looking at the wrong post. Check out the post on the LG set. (same date 23rd April).
Regards
John.

jkost:

--- Quote from: Contrast John on August 24, 2009,11:58:09 ---Hi jkost
Think you`ve been looking at the wrong post. Check out the post on the LG set. (same date 23rd April).
Regards
John.

--- End quote ---

indeed!  :biggrin2:

so..what's the case with these inductors?  looks way to easy so the problem can be fixed...

as i said before still i haven't tested the CCFLs for defection because i don't have CCFL tester or replacement parts so i can exclude any possibility.

tv tony:
hello, my company processes about 1500 lg sets a month and as such are account holders and we often fault find for lg, the sympoms you describe exhibit these faults, the ceratech filters (posh inductors) chokes, or whatever you may want to call them go leaky down to deck, i posted a shot from lg describing the fault, and if, as you say, you dont have any ccfl's what have you to lose, it would eliminate the issue for you, best regards,
tony walker

remo80:
Sorry if I post a different topic  :mellow:

help with LG-32LC56 with audio stops and only after removing the current goes back into operation.

P.S. Please be soft updates

thanks

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