Hisense Smart TV Standby LED does not turn on issue fixed

Hisense android smart tv dead issue fix. The issue was in a rectifier and I replaced the short circuited schottky diode with a good one which removed from a LG power supply board. Unfortunately I was not able to record the troubleshooting steps. If you have any questions comments below.

[@ONAHANDSON]

That's a Schottky Barrier rectifier. They are used to get a specific voltage. If you see two of it position side by side, one will supply 12v and the other 16v. It's common with LG PWR BOARDS

[@andykyle8849]

Thank you for being so informative. I'm trouble shooting a 65 inch Hisense. No standby light. You answered so many of my questions and gave me a starting point.

[@TafadzwaMadamombe]

I just ordered the Power Supply for my 65H9G - will be making the swap this week. How did your repair go?

[@tech-corner2556]

Good luck buddy..!

[@shahramzare9077]

Hi.what is wrong if the voltages for standby and main board are much more ?

[@kgomotsomonchwe954]

Hi buddy, where can I get a screen for Hisense screen panels.

[@pradeepmahendrasemage4043]

Thanks brother.

[@ephrahimmasai7400]

hello there have a hisense tv smart 43a6000f there was a power surge and burned a smd and a regulator ic how to i sort it out

[@pjhb_microsoldering_portugal]

Nice video, thanks for sharing

[@tech-corner2556]

Glad you enjoyed it

[@lonniebaretich7794]

I have a Hisense TV that's like 10 years old in the last few days the menu button keeps coming on and I think I can't change the sound or you know the volume I put new batteries in it I unplugged it left it unplugged for about 15 minutes we plugged it back in and it's still doing it do you have any idea what it could be thank you

[@franciscoreyesfranco1719]

Se agradece la traducción 👍

[@zaidfarjan8451]

I have a hisense no led light i got 12 volts n 20 volts from power supply pls help

[@Rato4eva]

Thank you for informative video. My TV does not have standby light but I see standby voltage when I measure it on the PSU and Main board. Any idea what I should check to find the issue?

[@B9NE]

If standby voltage is lower than 5 volts then check the capacitors on the power board.

[@cosmo0080]

hi, do i need to remove the barrier rectifier from the board to test it? or can i do that in the board thanks

[@tech-corner2556]

Sometimes you can test it without removing but not always. You need to remove it from the board to test it properly.

[@Jacqueline-hp4zd]

I have Hisense 50 inch that I did a hard reset by pushing power button and connecting power cable.the red light blinks but keep turning on off no picture or sound.can it be the power supply or the main board??.if you buy a new main board will this fix the problem and is this a easy install?? Thank you for your help

[@tech-corner2556]

@Jacqueline, Is this issue happened after you did the hard reset? If yes, this is most probably a software issue which happened during the reset. Then you can probably fix the issue by installing the tv firmware via USB port. Or if you change the main board it will work. Yes it is not difficult to change the main board if you have very basic technical skills. If not, This may be Main board, Power board, T-Con board or LED backlight issue. Without do a trobleshoot unable to make decision.

[@tonyharding8792]

I have this same issue before any type of reset and just started to do the same exact thing on its own. I can't find the reset button on the t.v. no were. Can you please help me sir. Thanks in advance.

[@abiside]

It was not clear which rectifier you replaced, the one above the aluminium or the other one?

[@tech-corner2556]

The one without aluminum heat sink.

[@user-jh8ic9cu4x]

Hello sir I need a main board of Hisense 50k390

[@sonosito]

Hello, I have a 50 inch hisense tv with the power board almost the same as that (rsag7.820.5687). Do you know what the voltage is for the backlight? You have four cables I have two, but I have measured and it is only 1.45 volts. Something broke there, maybe some chips.

[@tech-corner2556]

Voltages are marked on the board somewhere, try to find that. If there is damaged LEDs in the backlight the LED driver will detect that and stop the voltage output. Then you will not see the actual voltage. Therefore check the LEDs as well to confirm first.

[@sonosito]

Thanks for replying, but by now I've thrown away the TV, even if I bought the backlights there was no guarantee that they were of quality so they could break after a while. I realized that repairing the TV didn't guarantee it would last long because I wouldn't have used original spare parts anyway.

[@petrikko]

Never short a charged capacitor on the board. Use a resistor

[@johnbeaudette583]

Greetings, Thanks for the Vid. I have a HiSense 55" Roku TV It shut off the other day and would not turn back on. The standby light turns on when plugged in then dims and flashes once goes black for a couple seconds this sequence repeats continuously. I replaced the power board. Same issue. I measured the power from the USB port and the USB power seems to cycle with the light sequence. as if the TV is rebooting. Any ideas ?

[@tech-corner2556]

First do a power cycle reset. Unplug the main power cable. Then press and hold the power switch in the tv(not in the remote) for around 20 seconds. Then connect the main power and turn on the tv. If it is not working try following steps. Then disconnect modules one by one and try to find the issue, For that see this video : kzbin.info/www/bejne/b6eXhadrrpmLq6s Then you need to check backlight LEDs, for that see this video : kzbin.info/www/bejne/bHS5hWxjgdmmatE

[@zaidfarjan8451]

@@tech-corner2556 ,

[@tonyharding8792]

I have this same exact problem with my hisense 55 r6g but I can't find the power button on the TV. Why do these TV have so many mechanical problems the second one in three year's.

[@johnbeaudette583]

@@tonyharding8792 the power button is the bump on the bottom that you would think is the Infrared receiver. At least it is on mine

[@dragonsflame333]

Tongue clicking noises intensifies

[@tech-corner2556]

@Crimzon, Yes, that is my bad..! Sorry for that.. I will try to stop/reduce that in next videos.. Thanks for letting me know about that. :-)

[@folisafolisa9319]

Help I have the same power supply.....it was switching on .....but now it's off.....just after opening the cover.....

[@tech-corner2556]

@Folisa, Can you explain you issue little bit more. Then I can help.

[@xmojix]

Hi, I have Hisense 50" 50k20DG it won't turn on but when I connect and disconnect power cable from the tv the red indicator under tv turn on and off just 1sec. could you help me what is the problem? Do I have to change the capacitor or fuse or something?

[@tech-corner2556]

I can't say what is the issue exactly. But if you see red led turning on, that is a indicator of that the fuse is good.

[@xmojix]

​@@tech-corner2556 Thank you for your respond, when I plug power cable I see red indicator just for 1sec, after that it goes off.

[@dcgeorgia6307]

@@xmojix I think I have the same problem you have. When I click the power button on the remote, the red indicator light under the tv comes on for 5 secs or so, then it flashes one time and that's it. Did you find an answer to your problem? Thanks and thanks Tech-Corner for addressing these issues.

[@xmojix]

​@@dcgeorgia6307 Unfortunately No, it was not affordable for me to buy a replacement to test it. so, I sold it to someone that he can fix it.

[@leonardohernandez3365]

It’s the main board just fix mine !! I had the same problem

[@eastender4ever]

HI there I am wondering if u can help me . My hisense tv turns on then the screen flickers then it shuts off and wont turn back on do you know what could be wrong with it? Thank you in advance

[@tech-corner2556]

If the screen quickly flickering and turn off, most probably the issue is in LED backlight. See this video to understand that how to find bad LEDs and replace to fix the issue : kzbin.info/www/bejne/bHS5hWxjgdmmatE Before that, just try to update firmware. Because this is may be due to firmware issue. If you have the serial number of the tv, just call Hisense help center and provide your serial number and your email address. then they will send the firmware download link with instructions to install the firmware. Good luck.

[@ONAHANDSON]

If the tv still respond to remote control when I press it, then it's BACKLIGHT PROBLEM but if it doesn't respond to remote control, then it means your main board is bad, you need to replace it

[@eastender4ever]

@@tech-corner2556 so sorry for late reply I didn't notice the reply till now . I still have the tv when i plug it in and turn it on the screen lights up and then the tv shuts down and wont turn back on thank you getting back to me 🙏

[@eastender4ever]

@@ONAHANDSON HI thank you very much for getting back to me . When I plug the tv in and turn it on the screen lights up and then the tv shuts down and wont turn back the on and the power light goes from green to red. Any ideas ?

[@ONAHANDSON]

@@eastender4ever a whole lot of factors can be attributed to that. First, the IR SENSOR of the tv can go bad, secondly, the back light or the main board. I will advise you to disconnect the IR sensor from the main board then see if it will off. If it doesn't, replace the IR SENSOR( i.e it can be switch/sensor close to the right light). If you disconnect it and the tv still off, check if it respond to the remote after connecting it back to main board, if the tv doesn't respond to remote control, the fault is from the main board but if it respond, the fault is from the backlight

[@danielhedley4626]

Can you help me fix mine i have a 49 inch hisence TV with no power at all there's no power to the TV at all ive took the back off the TV and cant see any faults at all so I'm a bit confused what what the problem is mate please help thanks .

[@tech-corner2556]

Did you check the fuse/NTC/rectifiers and mosfets? check them first. good luck..

[@danielhedley4626]

@@tech-corner2556 I've sorted it now thanks for your reply it needed soldering were the cable went into the TV the power supply come loose

[@tech-corner2556]

@@danielhedley4626 Very good..

[@markwhitfield5412]

maybe the diode thing needed a heat sink too? maybe sercurit it to the close by heat sink and add longer wires.

[@ruelgalvez3228]

sir what is the part # of that rectifier?........tnx more power

[@tech-corner2556]

@Ruel, The rectifier number is : MBRF10100CT It is a 10A/100V SCHOTTKY RECTIFIER Ebay link : www.ebay.com.au/itm/5PCS-MBRF10100-MBRF10100CT-10A-100V-ON-DIODE-SCHOTTKY-TO-220-NEW-/301924675378?fbclid=IwAR1UB_TMxkxVzTgLpSn6eIOXvP1wDf3-cCuYpDQ1T5sBYaz9oy71r_HFFK8

[@kimberlycanon512]

Our 50inches hisense no light power i dunno whats wrong!

[@jimriddle1990]

Don't know what else it could be

[@computerguy7213]

thats bad for the capacitor discharging so fast, you should use a high wattage resistor, like a 1k ohm, that is 5 watts or so to discharge the capacitors.

[@reon7953]

My tv also not power

[@jimriddle1990]

I replaced all the boards in my 65 hisense tv red light still flashes

[@markb8035]

Might be your backlights maybe one of your led strips is bad

[@tech-corner2556]

@@markb8035 May be this is the reason most probably. Check backlight LEDs.

[@markb8035]

@@tech-corner2556 sorry just saw your message that’s most likely the cause there’s a connection to the power board that runs inside to the backlight you can test it thru there if there’s voltage there’s your answer

[@jietv3601]

sir di na nag on samin pano ayusin to buang kasi mga kapatid ko hndi pinatay kumikidlat naman pla mlkas ulan

[@tech-corner2556]

@Jie, Sorry, I can't understand your language. Can you please use Google translator and comment it English. Then I can help.