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Re: Hisense H6750G stumped on this
yours TV system Android. as any box or android TV the PSU produce 12V -10V always this will go to Step down on MB to generate 3.3 / 1.8 etc to let the Nand / CPU start the firmware start script (boot loader) , at this stage the PSU will go High and turn on all other rails include the BL
to trouble shooting Android MB.. we look after the low voltage i mentioned before.. if they are exist , then we have issue at eMMC / CPU / and the last issue at Firmware ( boot loader )
working around as any Mobile.... can play to knop power volume down and then plug in wall... or contact Hisense to have complete Firmware on USB..
the sign make me write this... because when u touched part the script start and BL come on.. so its sound for me boot loader issue or dead eMMCComment
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Hello
Need to know the voltages that will be present on SN51DP ic when tv is in standby and when powered on.
Just to elaborate on the problem with the tv 1.set came in with flash of HISENSE logo on screen then back into standby.2. Now tv when plugged in red standby light present to quickly changes to blue but no backlights.3.Then an hour ago i checked again , came on standby and stayed until i pressed the power button which changed to power on (blue)4.As far as the led driver circuit goes voltage at output in standby was 38v , power on led light up voltages rise 58v-68v... -
I suppose the real question is whether the existing pinouts from ether a 17IPS71 psu are cross compatible with a 17IPS12 psu? If they are then the exchange of the main boards should have no issues providing the screen is compatible with both main boards. Obviously you can change the screen configurations easily enough (providing you have the correct files) for the main board. Why may you ask would I do this? Well a lot of the smart features are no longer working on a Hitachi 48HBT62U main board I wish to give it a new lease of life!
Obviously the same LVDS connector for the screen connection... -
Hi and thanks in advance for any input you might provide!
I have a Sceptre U550CV-UMRD8POTV83BB 4K LED (this is a dumb tv) that I bought new in August 2021, so It's just completed 3 years.
Main power board model: TP.MS3683.PC821 T-Con board: N4TP546UHDPU2L_BO
Last Sunday I was watching a dvd and fell asleep for about half hour, when I awoke the tv screen was black and couldn't get the dvd menu to show, so I changed the input to antenna and had sound but no picture, turned it off. I then got online and found this great site! ....read many troubleshooting tips and this... -
Hi,
I am yet another unfortunate owner of a 65H6570F with a main board that failed due to an inherent flaw with the eMMC.
Reference: https://www.badcaps.net/forum/showthread.php?t=117406
The exact replacement board for a 65H6570 model TV is RSAG7.820.8831/ROH (aka 265223, aka 244991). It is very rare or expensive ($150+) to purchase currently and arguably not worth it if they're all just ticking time bombs.
A very similar board was identified in the above referenced thread, RSAG7.820.10315/ROH. It is more reliable, cheap, plentiful, and... -
Hi all
I have a Hisense 50r6 that quit suddenly, immediately after turning it on. It no longer shows red a standby light and will not turn on. Completely dead.
I have tested the power supply and found the following:
363V and 373V across the input caps
bri- 0V
ana- 0V
vamp-17.03V
vamp-17.03V
stb- 0V
12V- 9.3V
12V- 9.3V
To the extent of my knowledge (...not far!) these numbers are normal for a Hisense power supply in a standby state, though I would like some confirmation that 9v...
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