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Equipment Repairs => LCD TV forum => Topic started by: michael first on July 04, 2011,02:32:31

Title: lg model 32lc2r
Post by: michael first on July 04, 2011,02:32:31

hi,
I have this 32lc2r from lg,which has not osd,the backlights are ok,no sound .no image.I've found out that +6v from the smps is missing.it seems that voltage is derived from +12v power supply which is present.the stage of +6v is made up with 2 fet's,but without schematic I can't repair it.I know lg doesn't supply the psu schematics so I hope someone could help.unfortunately I don't know the model of the psu.thanks in advance.

Title: Re: lg model 32lc2r
Post by: Turnip on July 04, 2011,11:47:39

Hi Mike,

Think P/S is LGLP2637HEP (got one somewhere) can't find shematic though  - Chris.

Title: Re: lg model 32lc2r
Post by: yomin1 on July 06, 2011,08:28:48

Hi

schematics manual LG 32lc2r

 :051bye:

Title: Re: lg model 32lc2r
Post by: davenjax on July 10, 2011,04:52:59

hi mike i know these tvs suffer badly from the caps in the psu they all look ok but need replacing anyway if this is any help rgds dave

Title: Re: lg model 32lc2r
Post by: michael first on July 11, 2011,06:09:12

Hi,
thank you all for the kind answers.I've replaced 1 bulging cap,but the true problem is +6v missing which is derived from +12v.all the other lines are ok including +12v.there are 2 burnt fet's so I can't read the type of them.anyway hope to find a good psu.thanks again.

Title: Re: lg model 32lc2r
Post by: Turnip on July 11, 2011,13:24:03

Hi Mike,

Noticed the manual didn't include a shematic.

As I mentioned, I have that panel kicking about somewhere so if you want any chip info, just say the word  - Set was discovered in a hedge sprouting grass, so can't confirm function -  Chris.

Title: Re: lg model 32lc2r
Post by: michael first on July 18, 2011,05:49:07

Hi,
thank all,no way to fix it as the customer decided to have a new tv set.thanks.

Title: Re: lg model 32lc2r
Post by: ANDRASONI on April 06, 2012,04:11:01

Hi, i know that subject is old, but we can'nt find the PSU LG LP2637HEP schematics? Is difficult to repair this board without  informations detailed. Thanks, from Romania :051bye:

Title: Re: lg model 32lc2r
Post by: ANDRASONI on April 07, 2012,04:08:31

I find the solution : is fault on the 6V line, two IC-S type IRF7807( fet transistors) and the controller IRU3037, faulty, resolved problem.Tippical for LG lcd tv set. From Romania :051bye: