Sharp LC-80LE645E Flashing 2-5 :-(

[budwich]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

You are making "statements" that don't necessary follow from your testing... with that component removed, unless you have totally checked a schematic and know what that component is doing, anything after that component may be an issue that is causing the component problems. Having said that, I don't know for sure either as I haven't seen a schematic.

Have you check this component with a meter to see what it reads?
I am still guessing you have a side issue with this set that is causing problems with that component.

let's start over with your last post....
Quote:
"If I put back the defective capacitor (with short cirquit!) than the complete left side of the TV does not work, so this makes no sense.... "
Is this with the left corner white cable removed? IF so... this makes sense. Picture with test pattern of this please.
Repeat the same test with the right white corner cable removed... again what does the picture look like?

quote for your last post:
"So with it the 12V are shortet and the TV gets 2-5 error...."...
according to your previously statement, this statement about the error IS NOT true...since you indicated with the component in, and a corner cable removed, that the tv works. ??? please re-read your post and clarify.

[vakuum]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

I have ordered one.... but I do not know the value exactly.... :-(

yes it has low resistance and if I put 12V on it, I have high current.

[vakuum]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

You are making "statements" that don't necessary follow from your testing...

It looks like I can't write exactly what I mean.....

Have you check this component with a meter to see what it reads?

yes, nearly zero ohm.... I work dayly with ceramic capacitors and I know that this can't be good, also if it gets extremly hot within 2 seconds is not normal for a capacitor :-)

Quote:
"If I put back the defective capacitor (with short cirquit!) than the complete left side of the TV does not work, so this makes no sense.... "
Is this with the left corner white cable removed? IF so... this makes sense. Picture with test pattern of this please.

It is the same with the white corner cable and without....
I can't do a picture because of ERROR 2-5 and no backlight..... the TV does not work with this bad Capacitor soldered!!

If the bad capacitor is soldered the TV works only if the complete left side at T-CON is disconnected, this i have posted on my first post also with a picture! (half side white!)


I don't understand why you think a test with a bad short circuit component on a PCB makes any sense? hmmm.....

[budwich]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

ok... good. Hopefully, the replacement component will help / fix the issue.

[vakuum]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

here is the actual test picture!

it looks very strange.......

[budwich]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

I assume the "control example" is the second one ... :-)

hmmm... interesting. I can see from this that there are issues on the right side (which was the left side from the previous posted picture... ie. back side pictures).

Is this picture (one), a picture with the component replaced?

[R_J]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

You are missing green, check the cable feeding the signal

[vakuum]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

You are missing green, check the cable feeding the signal

yes I am missing green.... but some parts are dark white.... so there should be green in?!?
and all is darker so darkwhite parts or grey parts are black.....

it seems that complete picture has the same problem, not differents from right to the left.....

the cable between mainboard and T-Con looks fine and no change in picture if I touch it.....

hmmmm.....

[budwich]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

Is there any change if you do the corner cable disconnect test (ie. removing the lower corner white cable)? try either side? how are you feeding the signal in?

[vakuum]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

no change if I am removing the left or the right corner white cable.... only if I remove both of them, but this should be normal?!....
tomorrow I got the new capacitor (but I think this will not help....)

This testpicture comes from my notebook by HDMI....
But ATV and TV Menue looks the same....

only the picture of the SERVICE Menue looks perfect.....
here I can choose also some testpictures (complete screen in each color and so on) and also this test works fine!! here I have green and all other colors in very high brightness......

[budwich]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

interesting... of course waiting on the pictures

BUT, if I understand correctly, then you have an issue with the inputs (main board) if the internal test screen looks correct (depending on the test that you are referring to).

Not sure I understand about the "new capacitor arrives tomorrow" statement... what are you using there now?... nothing ???? probably not going to help the circuits involved... :-)

OOPS... I re-read your post, even the internals look bad... :-( then it is unlikely an input issue.
double oops... further re-read indicates (I think ATV tv?) which are inputs via tuner are bad versus something totally internally generated (service menu) looks ok. maybe a main board issue.

However, dropping either corner cable does not impact the picture likely means those sides are OK (ie. not "loading" down the tabs drivers on the opposite side).

Can you feed a smpte color picture in .... this is the test pattern that has large color bars across the top half and "contrast" patterns along the bottom. If so, what does it looks like.

I am concerned about your "test picture" that shows what appear to be a darkened area on the right side.... that appears to be a driver issue.
Also there appears to be some "issues" (horizontal like "errors") in the center of the picture on some of the edges of some of the pattern.

Of course without a working component in the bottom edge board... not sure what to expect.

[vakuum]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

so, I got the new ceramic capacitor... but soldering it has no change of the bad picture....

soo, the Error 2-5 problem is repaired with changing this capacitor but I have still the bad picture......

Is it better to make a new theme here according this bad picture? so I think it has nothing to do with the tabs arround the LCD.....

@budwich
I have two mainboards here and both has the same problem.....
could it be a failure T-CON??!?

I make new more pictures.....

[vakuum]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

here again some testpictures:

see information in picture name!

the picture is bad in ATV, DTV, HDMI, TV menue
the picture looks good in service menue but here I can't feed in testpictures

[budwich]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

hmmm... surely strange. I don't see any screen issues... I can see that the "dark side" that I saw in other pictures is just reflection from the surroundings.

Perhaps your "guess" that the tcon has a problem might be valid. Perhaps little to lose and much to gain with a second card if you can find one.

Have you verified all the voltages leaving the power card to the main and tcon?

[R_J]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

The service menu test shows that the panel is getting all three colors, red, green & blue. thats how you get white, It looks like the main board may have an issue or maybe the lvds cable or t-con.
There is no green video being supplied so the picture looks the way it does, 60% of the brightness of the overall picture comes from green.
I'm not sure where the service test pattern is generated from but if it does come from the main board then that would sugest the lvds & t-con is fine and the fault is with the main board signal processing. If the service pattern is generated by the t-con the fault could be with the main, lvds cable or tcon
a missing voltage would affect all three colors not just one.

[vakuum]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

There is no green video being supplied so the picture looks the way it does

There is NEARLY no green video being supplied.... so you see a Cyan part (green/blue) and there are also some white parts.... but main parts of green is missing, but not all, it is very currious.

I'm not sure where the service test pattern is generated from

this would be interesting to know......

Mainboard I have two pcs here, and with both the same problem.... so I will try to get new T-CON... perhaps it got damaged because of this bad short circuit from this cap!

[budwich]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

If as you indicate that the capacitor was bad and appeared to be "conducting" and there was 12v dc on one side... maybe that dc made it into something further "inside".

some more "playing"... with the component installed, if you remove one of the tcon cables, what does the remaining connected side look like with the test pattern?

[vinceroger69]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

does the new capacitor still get very hot compared too the one on the opposite side of the lcd

[vakuum]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

no, the new cap is perfect cold......

@budwich.... I will try... goood idea! ;-)

[budwich]

Re: Sharp LC-80LE645E Flashing 2-5 :-(

am still looking for an "impact change" that will focus the attention to an area for a closer look. I am still feeling that there is some sort of loading / poor reference happening based on my limited experience that I saw with the 70. The "loading" of the bad tabs caused the colors to "shift" in the color bars for the bad lines.... almost like a time delay. Not saying there are bad tabs but that some form of overall "loading" has caused a shift.

have you verify the board voltages?