Samsung un49mu7000f dead no power

[serkan koc]

Try this one, but the problem may also be in the 25Q80 firmware, which is responsible for the panel and t-con settings. Are the motherboard and panel part of the original kit?

denedim değişen bir şey olmadı.. emmc den yapabilir mi ? veya t-con regülatöründen? t-con devresi çalışmıyor her hangi kısa devre yok.. t-con voltajları çıkmıyor.

[lotas]

How are you 100% sure that you have a working panel?
Have you checked the hdmi and usb ports on the signal lines for low or short circuit?

[serkan koc]

How are you 100% sure that you have a working panel?
Have you checked the hdmi and usb ports on the signal lines for low or short circuit?

usb ve hdmı portlarında kısa devre yok.. panel sağlam eminim.. başka bir kart takarak görüntü alabiliyorum.. 25Q80 i diğer karttan kopyalıyorum.. değişmiyor durum aynı. ilk defa böyle bir arıza geliyor başıma.. ayrıca usb de 5volt okuyorum

[lotas]

Connect the control points (put a jumper) on FB_TRDY_1 and FB_TRDY_3 and pulling out one lvds cable at a time, see if the image is on whichever side.

[serkan koc]

Connect the control points (put a jumper) on FB_TRDY_1 and FB_TRDY_3 and pulling out one lvds cable at a time, see if the image is on whichever side.

panel sağlam. kontrol ettim başka kart ile çalışıyor.. sanırım komple kartı değiştireceğim.

[lotas]

Yes, it’s better to replace the motherboard so as not to waste time, the problem could be in both the processor and emmc....

[serkan koc]

Yes, it’s better to replace the motherboard so as not to waste time, the problem could be in both the processor and emmc....

evet emmc denemedim olabilir.. işlemci de olabilir ihtimaller denizi artık ilgin için teşekkür ederim değiştirmek en mantıklısı olacak.

[robertt]

Hallo , lotas thank you very much, my tv is working now

[lotas]

Hallo , lotas thank you very much, my tv is working now

Ok!

[Abdallah666]

Hi,

Same problem here. I have a UE49MU6402U with the same problem. No power ,no led. Voltage consistent with earlier discussion founde here: A13 9V, so power supply seems fine. I attach eeprom dump. Lotas can you help me ? Thank you so much !

[lotas]

Hi,

Same problem here. I have a UE49MU6402U with the same problem. No power ,no led. Voltage consistent with earlier discussion founde here: A13 9V, so power supply seems fine. I attach eeprom dump. Lotas can you help me ? Thank you so much !

Try.

[jidping]

Hi lotas. I have a UN49MU7000F with same problem mentioned in this post. I tried to flash the fixed dump in #22 but it didn't work. My original dump is attached. Will you please help take a look? Thanks

[lotas]

Hi lotas. I have a UN49MU7000F with same problem mentioned in this post. I tried to flash the fixed dump in #22 but it didn't work. My original dump is attached. Will you please help take a look? Thanks

Hi, your dump is in perfect order, working...

[jidping]

Hi, your dump is in perfect order, working...

Thanks for the confirmation. What else can cause the no power problem? Thanks

[lotas]

What else can cause the no power problem?

What's the problem? Is the standby LED on? Does the backlight come on when you disconnect the motherboard from the power supply?

[jidping]

What's the problem? Is the standby LED on? Does the backlight come on when you disconnect the motherboard from the power supply?

backlight come on when disconnect MB. A13V read 9V when MB connect. no standby LED. Thanks

[Diah]

backlight come on when disconnect MB. A13V read 9V when MB connect. no standby LED. Thanks

you have likely short cap on MB check around the VCC 3.3V C277

[jidping]

you have likely short cap on MB check around the VCC 3.3V C277

Thanks for the advice. I can't find C277. My MB BN41-02568B/BN94-12399A looks different than yours. But I get 3.3V on eeprom IC so 3.3V is good. I will check if there are any shorts. Next will try to get replacement MB.

[Diah]

Thanks for the advice. I can't find C277. My MB BN41-02568B/BN94-12399A looks different than yours. But I get 3.3V on eeprom IC so 3.3V is good. I will check if there are any shorts. Next will try to get replacement MB.

try to disconnect the wifi/BT module

[jidping]

Update. I got a replacement MB for UN49MU7600F and the TV is fixed after replacing the MB. Thanks for all the helps. 😀