Samsung UE70TU6905 BACKLIGHTS AND SOUND ON NO PICTURES BUT SCREEN NOT DARK

[bohaboha]

okay, then let start with basic check the MB.,
1-put it in STBY and call the service menu... see if it showing on screen. NFO MENU MUTE POWER , if nothing just press power to exit it.

yours TV doesn't have FRC, so i am not sure if this test will work... but as i know the main combined with T-CON will have this till zise 70 as yours..
2-Video section test .. while its on press via RC Mute --- 1---- 4 --- 7 --- Mute.. see if you got on screen test Pattern , no just put it in stand by and plug it out from wall

Hi can not se anything on screen to handle it with the remote control

[Diah]

i do have a digital microscope that display om 32 tv it is a very good tool .This TV is only 3 years old and it is broken just 6 days after guaranty time but it is not mine i ll repair it to a frend if i can

okay, then let start with basic check the MB.,
1-put it in STBY and call the service menu... see if it showing on screen. NFO MENU MUTE POWER , if nothing just press power to exit it.

yours TV doesn't have FRC, so i am not sure if this test will work... but as i know the main combined with T-CON will have this till zise 70 as yours..
2-Video section test .. while its on press via RC Mute --- 1---- 4 --- 7 --- Mute.. see if you got on screen test Pattern , no just put it in stand by and plug it out from wall

[bohaboha]

what i am talking on wasn't oscilloscope , its just Digital Microscope, let say magnifier with camera zoom to display the area on external TV 49 size Screen . don't laugh its DIY i do made 14 years ago., so helpful to inspect suspected parts like ceramic caps if there change at shape or had small broken at shell .. any way ... my friend ... 70 60.50 if i am at your shoes will never spend 1€ on them.. because the wrong from start to buy such rubbish, its not only at Samsung... its issue over all other brands.. get new TV, and leave this dam as Learning labor for you. backing it or do what ever you want to inhance yours Know how with TVs how they works.

i do have a digital microscope that display om 32 tv it is a very good tool .This TV is only 3 years old and it is broken just 6 days after guaranty time but it is not mine i ll repair it to a frend if i can

[Diah]

what i am talking on wasn't oscilloscope , its just Digital Microscope, let say magnifier with camera zoom to display the area on external TV 49 size Screen . don't laugh its DIY i do made 14 years ago., so helpful to inspect suspected parts like ceramic caps if there change at shape or had small broken at shell .. any way ... my friend ... 70 60.50 if i am at your shoes will never spend 1€ on them.. because the wrong from start to buy such rubbish, its not only at Samsung... its issue over all other brands.. get new TV, and leave this dam as Learning labor for you. backing it or do what ever you want to inhance yours Know how with TVs how they works.

[bohaboha]

i am not that expert.. of sure we have many users better than me.. but every users have his section .. some with PSU.. some with Data.. Some with BL. and some with crazy Fantasy ..lol
so can you measure In and out put V DC of all pins of the DC(DC converter chips VPMS2GMB ?
its not easy, you need calm hand and Microscope Screen for following .... to avoid make short contact as the measurements should be in active working SET.., in case this shot happened ,, yours MB will fly out and yours PSU too..

I think you are very good, I have learned a lot from your posts in different threads and the best thing about you is that you are completely committed to helping in the right way. No, I don't have oscilloscope yet but I have seen some videos that deal with the subject but not so thoroughly, maybe I will solve the problem otherwise I just have to buy a new Mainboard but It's worth the try

[Diah]

i am not that expert.. of sure we have many users better than me.. but every users have his section .. some with PSU.. some with Data.. Some with BL. and some with crazy Fantasy ..lol
so can you measure In and out put V DC of all pins of the DC(DC converter chips VPMS2GMB ?
its not easy, you need calm hand and Microscope Screen for following .... to avoid make short contact as the measurements should be in active working SET.., in case this shot happened ,, yours MB will fly out and yours PSU too..

[bohaboha]

Diah is correct, these TU models are the budget ones and are junk, I wouldn't even trust samsungs most expensive models any more.

I know he is absolutely right but what can we do about it, TV is in the market and in our home too. but one thing is for sure i that Diah is a very talented and knowledgeable TV repair person

[bohaboha]

we don't need to show muscles over here .. many things i didn't open threat over here.. because its not for users home repair or who are still at repair hobby .... please ask your self... if you are ready to repair MB.. if the answer no then spend money for replacement... however i don't recommend this as your Panels 70 kind of rubbish.

I thought we were in a forum where you share your experiences and had expected a more understandable reaction from you who is usually very kind and and engages you completely to help in so many comlexa tV errors because you are an expert and I am not but I try to learn from your experience.
But that today's bad TV screen is absolutely no news to anyone anymore.
Hope I get at least some help and maybe be able to solve this problem
I am very grateful for all the help that I have received from you and some others here

[nomoresonys]

Diah is correct, these TU models are the budget ones and are junk, I wouldn't even trust samsungs most expensive models any more.

[Diah]

we don't need to show muscles over here .. many things i didn't open threat over here.. because its not for users home repair or who are still at repair hobby .... please ask your self... if you are ready to repair MB.. if the answer no then spend money for replacement... however i don't recommend this as your Panels 70 kind of rubbish.

[bohaboha]

the tcom board sincronous lcd w mainboard

Tcon is integrated in mainboard for this set

[the Benninger]

the tcom board sincronous lcd w mainboard

[bohaboha]

Discard the tcon, and the main board, because power supply is not your case

problem to disassemble the black heatsink as if it is glued

[bohaboha]

[QUOTE=Diah;n3543374]

what kind of guide you are looking for ? i wrote the issue was VPMS2GMB ... if you don't have the ability and instrument to approve yours converter work and provide all V DC to the chips and T-CON On boards and SoC..!!!
what i should write.. search after data sheet to learn where and how it converted V DC to T-con on MB and SoC. are you waiting from me to deep my head and instruments at yours room via web ?? funny.[/QUOT

No, maybe a thread here in which you have dealt with the problem for my part, I am searching because it is a very common problem today and also tomorrow but thanks anyway

[Diah]

ok sure all the panels are what they are and that's what we get from people but your answer is not of sore help thought you would give me a more thorough guide on how you have fixed yours even though it was a 75 very grateful for all the info thanks or maybe a link

what kind of guide you are looking for ? i wrote the issue was VPMS2GMB ... if you don't have the ability and instrument to approve yours converter work and provide all V DC to the chips and T-CON On boards and SoC..!!!
what i should write.. search after data sheet to learn where and how it converted V DC to T-con on MB and SoC. are you waiting from me to deep my head and instruments at yours room via web ?? funny.

[the Benninger]

Discard the tcon, and the main board, because power supply is not your case

[bohaboha]

well for me all Panels with sizes Even Numbers such 50 60, 70 are rubbish,
as i wrote before the one i solved was 75.. and the issue was at the chip DC-DC Converter as you have on boards VPMS2GMB

ok sure all the panels are what they are and that's what we get from people but your answer is not of sore help thought you would give me a more thorough guide on how you have fixed yours even though it was a 75 very grateful for all the info thanks or maybe a link

[EazyBone]

well for me all Panels with sizes Even Numbers such 50 60, 70 are rubbish,
as i wrote before the one i solved was 75.. and the issue was at the chip DC-DC Converter as you have on boards VPMS2GMB

I have this same experience. 50/60/70 are shit. They short and die too much, 60 is the best of the 3 but they suck!

[Diah]

then please Diah tell me what to do to solve the problem

well for me all Panels with sizes Even Numbers such 50 60, 70 are rubbish,
as i wrote before the one i solved was 75.. and the issue was at the chip DC-DC Converter as you have on boards VPMS2GMB

[bohaboha]

yours photo... the area and parts you marked no short at them... they related to the TV SoC as filter installed outside the SoC.
inside the Soc there are Coils and connection need to have filter no place inside the Soc for them.

then please Diah tell me what to do to solve the problem