Hisense 50K360G

[dbier63]

Re: Hisense 50K360G

So I disassembled the panel and found no damage on the panel or backlight at all.
I inspected the ribbons connecting the panel to the address boards and found no damage there either. I'm guessing maybe one of the address boards has a surface mount cap issue. Can anyone direct me with testing the tiny caps on these boards?
I will post some pictures

[lookimback]

Re: Hisense 50K360G

I played around with mine a bit more and realized that to force the backlights on, I needed to connect stby to SW and BRI. I knew that, but wasn't thinking. So my power supply is fine. Glad I didn't spend any money yet. Mine has to be the main board, and I'm leaning towards the eeprom. ShopJimmy has it and I'm going to give it a shot.

[ecking767]

Re: Hisense 50K360G

So I changed the main and Tcon boards but still no picture. I guess I'm gonna pull the trim off and look at the panel.. Any suggestions would be greatly appreciated.

Thanks

did you find any problem with the LCD screen?

[lookimback]

Re: Hisense 50K360G

They make these things with the expectation of them being disposable, and not repairable.

[dbier63]

Re: Hisense 50K360G

I thought as much. I'm sure Hisense has some sort of schematic. They produced the piece of junk!
Anyway if I can't get it fixed. I'll just sell all the components I guess.

[lookimback]

Re: Hisense 50K360G

I couldn't find a service manual for it. I doubt anyone will know what that code is.

[dbier63]

Re: Hisense 50K360G

Ya know I am still getting a flashing code before led's power on. Blinks 7 times and a very short pause then 3 more blinks. Then the power supply turns on the led array. Can anyone tell me what this code string relates to? Could it mean the problem is with the panel?

[lookimback]

Re: Hisense 50K360G

I think that's your next move. Once you get the trim off, you might see the problem. It's sounding like TAB bond failure.

[dbier63]

Re: Hisense 50K360G

So I changed the main and Tcon boards but still no picture. I guess I'm gonna pull the trim off and look at the panel.. Any suggestions would be greatly appreciated.

Thanks

[lookimback]

Re: Hisense 50K360G

Thank you dbier63. Now I know I have a problem with the power supply, as opposed to a bad LED.

[dbier63]

Re: Hisense 50K360G

lookimback: I measured voltage last night and have 206 Vdc on both legs of LED backlight.

whatusername: thanks for the offer but this tv is just too nice for me to give up on just yet.

[whatusername]

Re: Hisense 50K360G

Thanks I'll check for the burns and cracking.
Also I will measure those voltages to the LEDs and post tomorrow.

how about u just send me the whole tv? i have one with a cracked screen and need a screen lol

[lookimback]

Re: Hisense 50K360G

Thanks I'll check for the burns and cracking.
Also I will measure those voltages to the LEDs and post tomorrow.

Thank you.

[dbier63]

Re: Hisense 50K360G

Thanks I'll check for the burns and cracking.
Also I will measure those voltages to the LEDs and post tomorrow.

[lookimback]

Re: Hisense 50K360G

I have one of these which won't power on, no turn on signal from the main, but even if I manually turn on the PSU, I still don't get backlights. PFC comes on, 380+ volts, and I get 144v to each pair of LED outputs, but no backlights.

dbier63, would you be able to tell me what voltage you get to your LEDs? Thanks.

[ecking767]

Re: Hisense 50K360G

I had this model Hisense, and the LCD screen was bad. I would do an screen inspection by removing the TV front bezel and then all four metal brackets around the LCD screen. check for small cracks and burn marks

[dbier63]

Re: Hisense 50K360G

Right, which is why I haven't done that. I have ordered a new main so we'll see how that works.

[budm]

Re: Hisense 50K360G

I will say this , if you put BOTH cables back in and leave the TV on long enough you will probably burn out your new T-CON board.
No functions of some of the button is not related to having only half of the screen working.

[dbier63]

Re: Hisense 50K360G

Replaced the tcon and measured 12.68 vdc at the input to the board. Still only have half a picture with the right side ribbon removed. Also nothing happens when the menu,input, channel or sound buttons are pressed. The only button that does anything is the on off button. So I'm thinking the problem may be the main board. Although I'd really like to see a schematic for the board as I would be able to follow the current path. Any imput would be greatly appreciated.

Thanks

[dbier63]

Re: Hisense 50K360G

Do you think maybe the chip went bad because of a problem with the main board?