Samsung eu75nu8000 no picture after tape method

[Davi.p]

OK , keep in mind i never made a lot of experiments on these type of sets , what i can tell is that if you make a test running the board without heatsink then probably the thermal protection kicks in and shuts off, the best way maybe put the board entirely in a bag inside freezer, let it cool enough , then make it start pushing on the processor with heatsink.. this test has few chances of success i think.. otherwise you can't fix it with only a thermal gun, it's too a specific process.. i am still searching a board for mine, so i can't say you the success rate of buying another board, if you do it, ensure by the seller it is come off from working set/cracked panel

[PNI E.]

dont touch the Soc right now,,,, to know if the short at the MB... disconnect the 2 LVDS from MB side and turn on... check the IC temperature

by the way why you removed the heat sink of it ?

diah, just come back from the test, and I think the main board is gone. How u suggest I disconnected the 2 flat cable of lvds, turn on and the cpu is become really hot in like 10 sec u can't hold the finger on the cpu, I show u the zone that become hot. Is it normal be so hot ? It s because I removed the heat sink? Or the hot without the lvds connect means the cpu is in short?

[Diah]

diah, just come back from the test, and I think the main board is gone. How u suggest I disconnected the 2 flat cable of lvds, turn on and the cpu is become really hot in like 10 sec u can't hold the finger on the cpu, I show u the zone that become hot. Is it normal be so hot ? It s because I removed the heat sink? Or the hot without the lvds connect means the cpu is in short?

put back the heat sink man.... i said the IC DC to DC you mentioned before,, leave the TV in boot loop just watch the IC temperature

[PNI E.]

OK , keep in mind i never made a lot of experiments on these type of sets , what i can tell is that if you make a test running the board without heatsink then probably the thermal protection kicks in and shuts off, the best way maybe put the board entirely in a bag inside freezer, let it cool enough , then make it start pushing on the processor with heatsink.. this test has few chances of success i think.. otherwise you can't fix it with only a thermal gun, it's too a specific process.. i am still searching a board for mine, so i can't say you the success rate of buying another board, if you do it, ensure by the seller it is come off from working set/cracked panel

Davi.p, I think with the test that diah suggest, to disconnect the flat of display and turn on the Tv and check the cpu temperature, I think u were right that is a main board problem and not a panel problem. Maybe in the end I have the main board and the panel broken, I don't know but for sure I think the main board is death because the cpu become super hot in 10 sec. I thought for push on the cpu I should remove the heatsink… sorry my mistake. If someone confirm me that also if I remove the heatsink, have a cpu with a temperature that u can hold the finger on it means it s broken, broken for broken I can try to put in the freezer and try it. So I wait someone confirm me that the cpu is death thanks

[PNI E.]

put back the heat sink man.... i said the IC DC to DC you mentioned before,, leave the TV in boot loop just watch the IC temperature

ok I put back the heat sink and test if the vpm2 become hot..sorry I thought IC means the cpu…..

[Diah]

MAN..... with out heat sink the Soc will be very warm to hot... and no panel LVDS will be more hot because the GPU section in Soc will turn load 100% searching for it panel source..... we are talking on DC to DC IC.... put the heat sink back and tell about this shit other wise i will not follow any more... go make ICE cream with the advised experiment..

[PNI E.]

put back the heat sink man.... i said the IC DC to DC you mentioned before,, leave the TV in boot loop just watch the IC temperature

I know guys I'm a nightmare. Come back after the test that diah suggest, hope I did in the right way. I put back the heatsink. I disconnect the 2 lvds flat cable from the main board. Turn on the Tv, with the termomemeter I tested the temperature of vpm2, but for not wrong I put a photo and sign the id I tested. In 1 minute, the temperature went to 58 celsius 136,4 F. Then slow the temperature went up but I turn off the Tv. Tell me if I did the test right and if it s normal

[PNI E.]

MAN..... with out heat sink the Soc will be very warm to hot... and no panel LVDS will be more hot because the GPU section in Soc will turn load 100% searching for it panel source..... we are talking on DC to DC IC.... put the heat sink back and tell about this shit other wise i will not follow any more... go make ICE cream with the advised experiment..

I'm sorry my fault….i didn't know without the panel the gpu works more….i thought it was the opposite…really sorry….im a farmer…..

[Diah]

dont touch any things any more.. just replace the thernal pasta on SoC and keep the heat sink installed... search after the points i told you and do as i wrote too end of ICE Cream experiment

[Diah]

I'm sorry my fault….i didn't know without the panel the gpu works more….i thought it was the opposite…really sorry….im a farmer…..

at the end we will won from you Olive Oil LOL

[lotas]

Thanks for your help, when I find this point what I should do…sorry I'm not a professional, but if u say me what I have mesaure I can do it, thanks

Install the jumper and disconnect the two lvds cables, put back the radiator (why did you remove it), turn on the TV and see if the panel DC/DC converter chip heats up, if so, then it is faulty or its wiring has a short circuit (ceramic capacitors).

[Diah]

good point lotas.... but use very very thin wire for jumper.. to avoid any short around

[PNI E.]

good point lotas.... but use very very thin wire for jumper.. to avoid any short around

the photo without heatsink is old, now how u suggest I put it back, but I'm using old photo for not make one. I did make the jumper the Tv start but the ic become super hot, I didn't take the temperature because I was holding the wire on the point u said ( by the way u are a dragon, I was looking for them when u wrote me but I could not find…), but the temperature was high I could not hold the finger on it.. so I think like before 60 Celsius. So it this ic broken or some capacitor near it right?

[lotas]

Yes, this chip could have died due to a short capacitor; check the resistance on the inductors relative to the ground around this chip.

[PNI E.]

at the end we will won from you Olive Oil LOL

How u know I have olive trees? But yes I have and I have vineyards so all the wine u want guys ….but before fix the tv because if we drink im not sure we ll be able to fix😂

[Davi.p]

Ok you told after that in the test you made you heard sound, this is a good sign, this means the cpu is working and needs the metal plate to work, the hot part you marked it is surely the CPU core, the other sparate "core" (it is called DIE) is the tcon processor

[Diah]

doesn't worth... no one know what you did before you posted over hear... game over trash bin for me. sad no olive oil lol

[PNI E.]

Yes, this chip could have died due to a short capacitor; check the resistance on the inductors relative to the ground around this chip.

really thanks for the help, for testing the capacitor, I put in beep mode the tester one cable of the tester on the ground and with the other tester cable I touch the capacitor on the both side, and I should have just one side beep, is it correct? And before when I notice this Ic become hot, I tested the diode around them in diode mode. When I tested I read number also if I change position of the cable of the tester, I know a good diode I need to read a number and if I change position of the tester cable I need read OL, or maybe they are in parallel?

[lotas]

If the chip burns out, then without equipment and skills you will not be able to overcome it, only replacing it with a working motherboard and not knowing whether your panel is working or not, it depends on your luck...

[Diah]

How u know I have olive trees? But yes I have and I have vineyards so all the wine u want guys ….but before fix the tv because if we drink im not sure we ll be able to fix😂

i have friend in Greece, bring me always Olive when he come to Germany... but he got very sick .... over talk... he told me 99& Italian farmer plant Olive tree beside wine... so their wine and olive oil better than our.... don't know if this true but just now you confirmed it to have wine and olive..