sharp aquos lc-60le636e dark picture

[wreksta]

Hi all i have the chance to buy this tv cheap seller says it has a contrast
Problem aa the image is dark like its inverted

Amy ideas will upload pics shortly

Just after a few members thoughts before i waist money

[newtothis]

Re: sharp aquos lc-60le636e dark picture

Hi all i have the chance to buy this tv cheap seller says it has a contrast
Problem aa the image is dark like its inverted

Amy ideas will upload pics shortly

Just after a few members thoughts before i waist money

Just from saying the word inverted makes me think .oO(Gamma IC) though usually see them "lighter" washed out

[tom66]

Re: sharp aquos lc-60le636e dark picture

Gonna put a bet on a bad panel. Or bad LEDs.

[newtothis]

Re: sharp aquos lc-60le636e dark picture

Gonna put a bet on a bad panel. Or bad LEDs.

More than likely with the amount we are seeing

[wreksta]

Re: sharp aquos lc-60le636e dark picture

Photos uploaded

[Alastair E]

Re: sharp aquos lc-60le636e dark picture

Photos uploaded

Err--Where....?

[newtothis]

Re: sharp aquos lc-60le636e dark picture

Yes I think you have forgotten to attach them

[wreksta]

Re: sharp aquos lc-60le636e dark picture

Sorry all they wouldnt upload last night

Ive been into service mode and the tv is bright and no problems in there
Tried a reset but it still remains the same

Any ideas now

Will try get pictures up today

[wreksta]

Re: sharp aquos lc-60le636e dark picture

[wreksta]

Re: sharp aquos lc-60le636e dark picture

[tom66]

Re: sharp aquos lc-60le636e dark picture

I would say bad panel. Hard to be certain but looks like it.

[wreksta]

Re: sharp aquos lc-60le636e dark picture

Hi tom i hope its not mate

Service menu gives a clear bright screen after a reset i get a sucess screen nice bright green background

To me it looks like a mainboard or tcon problem
Not all menu text is visable in dtv mode some is dark some is bright


Any thoughts mate

[vinceroger69]

Re: sharp aquos lc-60le636e dark picture

if this set was mine and a tcon was cheap i would probably try one to rule it out you can always re sell it if it does not solve the issue.

[tom66]

Re: sharp aquos lc-60le636e dark picture

It just looks like colours are distorted - not dim or lack of brightness.
It could be panel or t-con.
Maybe main IF the settings are wrong (cont/bright/etc) -- but I really doubt it.
Test pattersn can be found in service menu, so try them.

Having seen this on lots of other sets tho it's usually panel, only t-con on the few with AS15 gamma ICs

[wreksta]

Re: sharp aquos lc-60le636e dark picture

Thats just it the test patterns dont show if i press right tp choose test pattern it will flash up and off really quick cant acess any other patterns and the whole digital tv picture is dark like inverted colours

Also could it be water damage corrosion on the main panel ic boards ?

[wreksta]

Re: sharp aquos lc-60le636e dark picture

Any ideas on what i have said

[wreksta]

Re: sharp aquos lc-60le636e dark picture

update

ive stripped down the main screen to driver boards
i found liuid damage and a burned flex ribbon from tcon


so i think the tcon is short hence gamma contrast problem
im not sure though any thoughts

as i get the full characters and colours on the service menu does this mean that if i replace the tcon the screen will actually function perfectly

[tom66]

Re: sharp aquos lc-60le636e dark picture

Liquid damage = Bad panel

Sorry, but it's dead. Liquid damage is basically terminal in 99.5% of LCD panel cases.
Sometimes, if the damage is VERY light, like only a few contacts, it can be repaired. But that is the exception rather than the rule.

Strip it, trash the panel.

This is why I got out of the biz.... too much shit like this. Plasmas didn't used to die like this from a drop of water. Hah.

[newtothis]

Re: sharp aquos lc-60le636e dark picture

I don't repair TV's at all anymore! As Tom stated to many failed panels!