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Equipment Repairs => LCD TV forum => Topic started by: sparky on March 15, 2010,06:23:14

Title: lc-27w6s
Post by: sparky on March 15, 2010,06:23:14

hi
have picked up this tv sound ok pic blanks out backlights go off
after coulpe mins switch on/off pic back on
have checked 24v ok 5v ok measured transformer ok
soldered pcb any suggestions don't think inverter faulty

Title: Re: lc-27w6s
Post by: Turnip on March 15, 2010,07:30:11

Hi Sparky,

Have had a couple of Sharp that did much the same and in both cases resoldering invertor drive chips did the biz  - Chris.

Title: Re: lc-27w6s
Post by: sparky on March 15, 2010,11:22:24

hi
just finished soldering still same i am going to change transformer one
at a time to see if its faulty

Title: Re: lc-27w6s
Post by: Turnip on March 15, 2010,12:42:25

Hi Sparky,

Just a thought, what's the invertor - mine were both 32" - Chris.

Title: Re: lc-27w6s
Post by: sparky on March 15, 2010,13:11:31

hi
its got 7 transformers
mod 4H.V0708.001?/E5
 i bought it at the car boot includes remote
cust said pic blanks out worth £15

Title: Re: lc-27w6s
Post by: Turnip on March 15, 2010,13:15:37

Hi Sparky,

A Sunday well spent - Chris.

Title: Re: lc-27w6s
Post by: sparky on March 15, 2010,13:32:42

will be if can get it sorted also neighbour had accident 37" matsui
child throw frisbee for dog it hit the screen ,screen has had it they are not insured
they gave it me for spares  good day or what
sparky
also lexsor same model lc 27w6s

Title: Re: lc-27w6s
Post by: pol-uk on March 17, 2010,04:24:03

Maybe yo've got invertor OK in some case i found few modesl with the same screen and invertor which have faulty CCFL Lamp inside screen. Regards

Title: Re: lc-27w6s
Post by: sparky on March 17, 2010,05:03:44

hi
just trying to decide if screen or inverter faulty
sparky

Title: Re: lc-27w6s
Post by: pol-uk on March 17, 2010,05:26:20

You should get there an V270W1 or V270B1 screen inside. Try to change only glass (lcd screen only) to another whole backlight from faulty (smashed) screen. In this case it's very easy. Reagrds

Title: Re: lc-27w6s
Post by: In_Focus on March 18, 2010,14:36:33

Hi.
Change the two 1000uf caps and the 47uf beside the chopper ic first. These are the most common causes of start up problems on this Harwa munufactured set.

Beware!!! if you get it going and sell it on, HDMI opertaion is very unreliable, usually lockup occurs after a few hours use. No support from the manufacturer.

Title: Re: lc-27w6s
Post by: sparky on March 18, 2010,16:21:47

hi
the psu is ok its not a start up fault