Hi, I have a 50 inch Hisense Android tv, 50H8G, board number 261423, 261424, RSAG7.820.9615/ROH and I was wondering if there was a bios chip on it. If not, what component on the board does the firmware write to. If it wrote to an Ic chip then I could unbrick my TV and write directly to the IC. My TV has a white light of death after an update and I tried all fixes and nothing works. Thanks
I have a 43inch Hisense that's neither zero nor stable voltage. Its a combo main+PSU on a 43 inch hisense 4k LED backlit 2020 model (mfg and sale in 2020). I believe the model to be 43H6 but can't confirm ATM. I recorded a video. Both on DC and AC modes on the multimeter with 600V range shows voltages of 440ish and then steady decline followed by a spike to 440 and repeat. Red status LED is on at power on, turns off for a few seconds, then comes back and does two deliberate blinks to indicate PSU fail then repeats the cycle. Tested the TL BLK-04NT 2023 transformer and get similar behavior at lower voltages. HV pins 1,2,3 are short together, 4 and 5 are short too, then on LV side 1 and 6 are short and 3 and 4 short. 2 and 5 are floating. I recorded a video of the driver cable test as in this video. Diodes obviously fine. Caps aren't blown. Any thoughts? Heres the video: ua-cam.com/video/SqkgQ05znhM/v-deo.html
What do I need to check on an LG 55LN5100-UB if the screen is black but audio works and you can see video once a flashlight is pointing towards the screen?
It could also happen (took me a month to find out), that you change all led strips and still get a flash and a turn off. But watching carefully, it was only half of the strips flashing.. there was a broken connector in a led strip. So I had all leds ok and voltages ok, but the problem was a connection! CHECK CONTINUITY BETWEEN POWER SOURCE AND LEDS, ALD BETWEEN LEDS. A simple bypass between strips and the TV is back on!!
You can also check at the two pins that are shared by the two high voltage caps next to the connector. Confirm using continuity which pin goes from connector to cap. Mine reads 300v so time to rip out front panel to get to those pesky LEDs.
+shopjimmy i have a strange case with a Hisense LTDN50k220WSEU. The TV works properly but the backlight doesn't. The backlight flashes just for a moment when the tv is powered on and then nothing more (zero volt at the connector). Disconnecting the backlight i can see for roughly 20 seconds the right voltage at the connector but then it goes down to zero volts. I would like to have your opinion about that because i think that the leds are actually fine and i would replace the power board or try to find the problem on the one of the TV. What do you think? Thanks
I have a Hisense 50H5GB, No video but I have sound. I can see picture with a flashlight. I replaced the power supply and with both power supplies I get only 2volts dc when I test the LED output socket. Leads me to believe the LEDS might be good and it would be the mainboard? Does the main board control the voltage thru the power supply to the LEDS?
Hi, thanks for the video. I have a problem with my hisense led tv maybe you can help me. Its a LTDN50K220WSEU. I turned it on and after 10sec it maded some noise like pzzz and then a little explosion and black screen. There was also some burning smell some days already. Now when I turn it on, comes the normal blue light but there is no image and no sound. The power supply makes some noise and then stays still. When I power it off again with the control, the power supply makes some noise then turns the lamp red. If I change the whole power supply maybe it explodes again right? I did the test with the tv pluged in and got like 1.5v The output voltages were also wrong 3v in place of 12 and 13 in place of 16v. A bad backlight can broke the power supply?
My Hisense TV SB light flashes once as I power it on and no display on the screen. When power it off same, SB lights flashes once. Can that be the backlight?
hi i have hisense h55m3300 i have 4 wires on backlight bit blue and black white red , how can i test this says 170volts for backlight on red white i got 138 on blue black i have 448 do you think my power board is dead cheers.
One led is 3.3v, a strip has 6 leds so it should be around 20v. 10 strips of 20v led serial is 200v, right? How many leds do you have in one strip? maybe 7? And maybe the leds on your model are connected in parallel. On the other video he showed how to replace leds, it looks like there are 11 6-led strips connected in parallel. But that's a 50" model. I am trying to build my own power for the leds so I need to know the spec and schematic too...
Hi, I have a 50 inch Hisense Android tv, 50H8G, board number 261423, 261424, RSAG7.820.9615/ROH and I was wondering if there was a bios chip on it. If not, what component on the board does the firmware write to. If it wrote to an Ic chip then I could unbrick my TV and write directly to the IC. My TV has a white light of death after an update and I tried all fixes and nothing works.
Thanks
I have a 43inch Hisense that's neither zero nor stable voltage. Its a combo main+PSU on a 43 inch hisense 4k LED backlit 2020 model (mfg and sale in 2020). I believe the model to be 43H6 but can't confirm ATM. I recorded a video. Both on DC and AC modes on the multimeter with 600V range shows voltages of 440ish and then steady decline followed by a spike to 440 and repeat. Red status LED is on at power on, turns off for a few seconds, then comes back and does two deliberate blinks to indicate PSU fail then repeats the cycle. Tested the TL BLK-04NT 2023 transformer and get similar behavior at lower voltages. HV pins 1,2,3 are short together, 4 and 5 are short too, then on LV side 1 and 6 are short and 3 and 4 short. 2 and 5 are floating. I recorded a video of the driver cable test as in this video. Diodes obviously fine. Caps aren't blown. Any thoughts? Heres the video: ua-cam.com/video/SqkgQ05znhM/v-deo.html
Same thing mines doing. Ever figure it out? Starts at like 300, goes down to 90, then spikes back to 300
What do I need to check on an LG 55LN5100-UB if the screen is black but audio works and you can see video once a flashlight is pointing towards the screen?
It could also happen (took me a month to find out), that you change all led strips and still get a flash and a turn off. But watching carefully, it was only half of the strips flashing.. there was a broken connector in a led strip. So I had all leds ok and voltages ok, but the problem was a connection! CHECK CONTINUITY BETWEEN POWER SOURCE AND LEDS, ALD BETWEEN LEDS. A simple bypass between strips and the TV is back on!!
You can also check at the two pins that are shared by the two high voltage caps next to the connector. Confirm using continuity which pin goes from connector to cap. Mine reads 300v so time to rip out front panel to get to those pesky LEDs.
+shopjimmy i have a strange case with a Hisense LTDN50k220WSEU. The TV works properly but the backlight doesn't. The backlight flashes just for a moment when the tv is powered on and then nothing more (zero volt at the connector). Disconnecting the backlight i can see for roughly 20 seconds the right voltage at the connector but then it goes down to zero volts. I would like to have your opinion about that because i think that the leds are actually fine and i would replace the power board or try to find the problem on the one of the TV. What do you think? Thanks
Got a problem with my Hisense H43a6250uk, checked the fuse - OK, checked the power supply, shows 149 volt with plug in and power on is that OK?
I have a Hisense 50H5GB, No video but I have sound. I can see picture with a flashlight. I replaced the power supply and with both power supplies I get only 2volts dc when I test the LED output socket. Leads me to believe the LEDS might be good and it would be the mainboard? Does the main board control the voltage thru the power supply to the LEDS?
Thanks, will use this as a guide
Hi, thanks for the video. I have a problem with my hisense led tv maybe you can help me. Its a LTDN50K220WSEU. I turned it on and after 10sec it maded some noise like pzzz and then a little explosion and black screen. There was also some burning smell some days already. Now when I turn it on, comes the normal blue light but there is no image and no sound. The power supply makes some noise and then stays still. When I power it off again with the control, the power supply makes some noise then turns the lamp red. If I change the whole power supply maybe it explodes again right? I did the test with the tv pluged in and got like 1.5v The output voltages were also wrong 3v in place of 12 and 13 in place of 16v. A bad backlight can broke the power supply?
Bu cihazda tam olarak sorun neydi rica etsem yazarmisiniz
Fantastic thankyou so helpful nice vid
My Hisense TV SB light flashes once as I power it on and no display on the screen. When power it off same, SB lights flashes once. Can that be the backlight?
hi i have hisense h55m3300 i have 4 wires on backlight bit blue and black white red , how can i test this says 170volts for backlight on red white i got 138 on blue black i have 448 do you think my power board is dead cheers.
I have a Hisense model 55h6d it has sound no picture and see LEDs glowing in back of tv just no picture what could it be
i cannot get this far because when i power i get the light flashing 6 times then it shuts off. Anyone here that can help?
What if I'm getting 1 volt at the connection going to the LEDs
You need Note that 90v so Tiere is a Problem at the Power supply
can I join shop jimi
I just tested mine, and it has read 80 v
Are you saying to just test the same point multiple times? This video makes no sense.
Please include your Arabic translation
Ok needy bastard, why dont any of the arabic videos all include an english translation? And is that the only english u know or something?
200 v is way beyond normal. I get 23.5 V. This video is very misleading. But I think power supply bad not giving other correct voltqges.
One led is 3.3v, a strip has 6 leds so it should be around 20v. 10 strips of 20v led serial is 200v, right? How many leds do you have in one strip? maybe 7? And maybe the leds on your model are connected in parallel. On the other video he showed how to replace leds, it looks like there are 11 6-led strips connected in parallel. But that's a 50" model. I am trying to build my own power for the leds so I need to know the spec and schematic too...