Hisense 50P6

[viewerau]

Re: Hisense 50P6

you need first to replace good ribbon cable.. with out ribbon its useless to test or repair

Thanks again Diah,

I'm sorry, but I am hopelessly confused in the above reply...please forgive me for not understanding what to do at the moment.

In posts #117 and #120, if I have read these right, you said to do the test with just the one good ribbon, which I have done, and reported back on the results.

Now it appears you are saying that testing with just one ribbon was useless.

PLEASE..I try hard..what am I doing wrong?

Sorry for my continued asking.

[Diah]

Re: Hisense 50P6

Is it time to give in?

you need first to replace good ribbon cable.. with out ribbon its useless to test or repair

[ruckusman]

Re: Hisense 50P6

My apology for being a bit slow with this reply.

Before I did anything I checked to see if the pin on the PS had 12v when turned on...it did.

I then turned it all off and then put the lead on the 12v PS and onto F1 on the t-con and the screen went bright white with no lines.

then the issue at MB. don't play with T-CON or screen any more..
remove the black heat sink from the CPU and upload high resolution focused photos of the MB from up and down side..

@Diah, can I ask, I have a similar screen, different model and boards, however I have just completed this 12v only connection to the t-con test and the screen didn't go white, it stayed dark.

My Thread here
https://www.badcaps.net/forum/showthread.php?p=1239967

Does this mean the issue is more likely with the t-con?

Is it possibly a firmware issue with the t-con?
Something worth trying?

thanks

Glenn

[viewerau]

Re: Hisense 50P6

Is it time to give in?

[viewerau]

Re: Hisense 50P6

Well, nothing happened...

Backlights were all lit as per usual, and looking at the front of the screen, the usual dim looking screen.

No change noted on swapping cables.

I thought this may be the case, as with nothing connected to the tcon board except the unconnect ldvs at the mainboard, my head was tying to tell me that nothing much would work, but as usual, I am probably hopelessly wrong?

Thanks

[Diah]

Re: Hisense 50P6

May I please ask a question before I conduct the test with only 1 working ribbon please?

yes. you are correct.

[viewerau]

Re: Hisense 50P6

May I please ask a question before I conduct the test with only 1 working ribbon please? I am afraid to do this wrong, and then be remorseful for not asking first.

You said....

after you approved the LVDS and both ribbon are fine... do this test ( in order to know which half of screen are good )

1- disconnect LVDS from main boards side... fix your jumper 12 V to T-CON fuse ( use yours original T-CON )t
2- disconnect only one ribbon cable ( from T-CON side) of the half screen which it show at yours Video bright line
turn on the set and upload photo
if- its clear color pattern or one color ... turn off the TV wait little to discharge.. then reverse the ribbon ( connect the bad side and disconnect the good one ) Note : always disconnect ribbon from T-CON side then turn on and let see photo too

in case both side are not good displaying..... try do the test same way with yours donor T-CON.

Disconnect the main LVDS cable at the mainboard end

If I disconnect the one remaining main ribbon cable cable at tcon end,and the other end connected to the edge boards, then connect the jumper between the 12v on p/s rail and the fuse marked P on the t-con, and then power the set, should that give me one picture on one side or the other, and then.....

If I totally disconnect that ribbon cable and move it to the other side of the tcon, should that ribbon be disconnected at tcon side, connected at edge board side, then connect the jumper between the 12v on p/s rail and the fuse marked P on the t-con, and then power the set, should that give me one picture on one side or the other, and....

MY APOLOGY FOR ASKING, BUT I DO NOT WANT TO STUFF UP AGAIN

SORRY.

[viewerau]

Re: Hisense 50P6

Thanks Diah....testing asap...Mothers Day in Australia, so tied up with family at the moment....

[Diah]

Re: Hisense 50P6

Better photo

right now don't buy ribbon.. just do the test but be careful don't damaged the good one too....
later if you are at the right way again... will tell you how we can fix ribbon ( ONE TIME TRY PLUG IN )

[viewerau]

Re: Hisense 50P6

Better photo

Found this...cripes they are dear???
https://www.ebay.com.au/itm/35424522...Bk9SR9DMl8yCYg


Will try your test....... (you have this one look in good shape... you can use it ( one ribbon only ) to do the test i wrote to you at post #112)........ tomorrow

[viewerau]

Re: Hisense 50P6

Thank you.

I have not connected the ribbon cables back onto the t-con since making photos.

I do see lots of ribbon cables, but have not yet found any with the same markings or size after searching google for some time.

I will try keep looking so that I can replace them...wish me luck.

[Diah]

Re: Hisense 50P6

you have this one look in good shape... you can use it ( one ribbon only ) to do the test i wrote to you at post #112

[Diah]

Re: Hisense 50P6

ribbon cable are straight pins 1-1 not reverse one and never being reverse same to LVDS

[Diah]

Re: Hisense 50P6

Blown up pins

This is what I am googling for
60 pin E248682 AWM 20941 105C 90V VW-1-F-

Is it a hook type , some say forward/reverse....I think mine is reverse(??) but mine has all the writing on the pin side, and the other side is black with blue hook top and tail

Confusing to a newbie

this one damaged. don't use it and don't use any at same fault shape in future

same as this & this

[viewerau]

Re: Hisense 50P6

Blown up pins

This is what I am googling for
60 pin E248682 AWM 20941 105C 90V VW-1-F-

Is it a hook type , some say forward/reverse....I think mine is reverse(??) but mine has all the writing on the pin side, and the other side is black with blue hook top and tail

Confusing to a newbie

[viewerau]

Re: Hisense 50P6

Thanks Diah....

I think you have pinpointed me to a vital area, as I think, one set of ribbons between the tcon board and the edge board is damaged?

I do not have any different small cables from those donor boards for these little strips

Could this be the problem you have had me searching for?

Should I be searching for a place to buy a replacement strip?

Thank you

[Diah]

Re: Hisense 50P6

after you approved the LVDS and both ribbon are fine... do this test ( in order to know which half of screen are good )

1- disconnect LVDS from main boards side... fix your jumper 12 V to T-CON fuse ( use yours original T-CON )t
2- disconnect only one ribbon cable ( from T-CON side) of the half screen which it show at yours Video bright line
turn on the set and upload photo
if- its clear color pattern or one color ... turn off the TV wait little to discharge.. then reverse the ribbon ( connect the bad side and disconnect the good one ) Note : always disconnect ribbon from T-CON side then turn on and let see photo too

in case both side are not good displaying..... try do the test same way with yours donor T-CON.

[Diah]

Re: Hisense 50P6

i had never replaced for test or repair any LVDS or Ribbon cable ONLY after inspect them before use... small issue can drive big on.

[viewerau]

Re: Hisense 50P6

Thanks

I will do that,however the donor boards all came with the ribbons and connectors, and I have tried swapping those over already, thinking one may be faulty.

The swapping hasn't resulted in any changes to date, but I will do as directed.

Thanks again for your help.

[Diah]

Re: Hisense 50P6

It still has exactly the same start up stipes, and with ldvs disconnected from tcon board, it still has backlights, as well as the picture showing black, with dull illumination.

yours TV T-con 12V feed come via LVDS. if you disconnect LVDS, mean T-CON & Panel out from system. so what you see its just reflection of the BL
this why when we disconnect LVDS we feed the T-CON with 12V tolet it work with panel as stand alone..

on yours Video.. T- CON try to play color pattern R-G-B-W-b, but all of are washed off and one bright dark line on the right side.
right now you don't need to try turn the TV on at all.. start with taking the LVDS and the both ribbon cable . photograph the end of them with yours mobile camera as focused close photo.. upload the photos to yours PC and enlarge them by zoom to inspect all pins if one are broken.../ broken mean it could be moved to side made contact to nearest pin or its shorter than other.
i faced this disrupted pattern with other TV platform. but it was with T_CON too and one of ribbon was the guilt. try this.