iFixit - Answers With Device "Hisense 50p7"

Hisense 50p7: My Hisense 50R6E won't turn on.

Sat, 23 Mar 2024 21:47:54 -0700

About 2 weeks ago my Hisense 50R6E stopped working, I had some LED strip lights running along the back that were plugged into the USB slot so they would turn on and off with the TV. I fell asleep watching TV and woke up the next morning and my picture was black and the lights were flashing like crazy for 3 seconds then would stop for 2-3 seconds and would repeat. So I unplugged the strip lights and tried to turn my TV on and it didn't work, dark black screen and the red input light just flashed about 3-4 times. I tried power cycling the TV to no avail, I also changed cords and made sure the cord was good, made sure the outlet was good, made sure no breakers flipped. So I then ordered a replacement main board same exact part number and replaced that and still did not work. I then order a new power board same exact part number and it still has not worked. I looked up several video of what I should test with a multimeter to make sure the connection between the main and power is good and everything seems to be testing okay. I have now ordered a tcon board same exact part number hoping that will be it because if I replaced the main, power, tcon what else could it be besides the back lights? Which i also already ruled out because if it was just backlight I would still hear sound and the tv would still turn "on" but I hear no sound and I can't take control of it with my roku remote app on my phone which means it's not turning on and connecting to the registered WI-FI. Please any help or information anyone can provide would be GREATLY APPRECIATED.

I have it torn down so I can see what exactly is going on with the LED lights. But you'll have to forgive me this is my first project like this and I

am most certainly a novice just trying to learn as much as I can. I am worried about these small driver panels at the bottom so I can get to everything, is there anything I need to worry about NOT doing right here? And this metallic looking tape do i need more on hand to put more down when I'm sealing everything back up or? And if I do what is it called so I can get some?

The black goo that I am referring to is stuck ONLY behind each of the lights onto the metal of the TV.

I am also looking for replacments right now and can only find 2 different kinds. 1 is sold as exactly what I have in the tv with no split in the middle standard 4 pc. Then the other is an 8 pc that looks like it is separated and plugged in again in the middle? Why is that, do you know? And does it really make a difference in quality/ life of product/ or installation difference? The 4 pc is like 60 bucks the 8 pc is 20 thats why I am asking, I have kinda learned you get what you pay for and I don't wanna throw cheap LEDs in there just to have this problem again in a year or 2.

⟐ Commented March 23, 2024 at 21:47 MST

Hisense 50p7: Hisense 55P7 open cover how

Sat, 15 Jul 2023 03:09:19 -0700

I want to open the back of tv but even with all screws out I can’t lift it. It looks like something is holding on the sides. I tried to find clips but had no luck. Does anyone know how to pull it off without breaking the cover?

⟐ Commented July 15, 2023 at 3:09 MST

Hisense 50p7: Why is there no sound or image?

Mon, 22 Jan 2024 12:25:50 -0700

My Hisense TV went black then it keeps going to a Hisense Screen. The only way I can turn it off is to unplug it.

⟐ Answered January 22, 2024 at 12:25 MST

Hisense 50p7: Have sound. But no image

Sun, 01 Dec 2019 10:36:53 -0700

Hello. Working on a Hisense 50P7 which powers on with backlight and sound. but no image of any kind (menus etc) the sound works via both tuner input and HDMI.

I have measured the power supply voltages. 12V and 18V pins all measure correct. However “STB” only measures 0.5V when off and 2.7V when on. Which seems off to me.

Have measures all backlight connections have ~47.3V on all VO pins. And 4.7-5.3V on all backlight led pins. While the backlight is dim. It appears to he consistant when veiwed in a dark room.

When powered on. The power led flashes 17 times. Not sure if that is relevent but earlier models seemes to use it for fault codes.

Have disconnected and reconnected all plugs / ribbons with no change in behaviour

Have measured the fuse on the video driver pcb and that is still intact (measures about 11.6V)

None of the capacitors loom to have a bulge. But have not yet removed and measured them.

Looking for any insights into what may be the underlying fault and where I can start.

⟐ Commented December 01, 2019 at 10:36 MST

iFixit - Answers With Device "Hisense 50p7"

Hisense 50p7: My Hisense 50R6E won't turn on.

Update (03/23/24)

Hisense 50p7: Hisense 55P7 open cover how

Hisense 50p7: Why is there no sound or image?

Hisense 50p7: Have sound. But no image