Un55mu630df
Collapse
X
-
-
Re: Un55mu630df
Researched and found out it still can be powersupply, I didn't just pull that statement out of the air.Comment
-
Re: Un55mu630df
Hello I have a Samsung UN55MU630DF television. I have tested the power supply and getting good reading on my voltages. 12.2 and 3.34. I replaced the main board because initially it would not even come on. Now the back lights flash on and off in a cycle. No T-Con but did replace ribbons from main to panel.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
-
Re: Un55mu630df
Not sure what you mean by control voltages. The voltages going into the main board are all stable when everything is hooked up and the backlights are constantly cycling, at 12.7 volts. On the power supply pin 4 which is BO on/off will go from 0 up to 3.4 as the t.v. cycles.Comment
-
Re: Un55mu630df
Check voltage of CP810S and CP814S, on powersupply, put meter leads on the legs, measure in standby and with power button activated, simple test.Last edited by nomoresonys; 05-10-2018, 04:33 PM.Comment
-
Re: Un55mu630df
Control signals:
Pin 2: ANA_DIM (Analog Dimming control)
Pin 4: OD_ON/OFF (BL-ON: Backlights on/off)
Pin 6: BLU_PWM (PWM Dimming control)
Pin 8: PS-ON (Main power supply ON/OFF)
So which one is not stable? Pin 4?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
-
Re: Un55mu630df
O.K. so I can't really put the t.v. in standbye because it seems to cycle on and off or at least the backlights flash on and then off. The capacitors on PC810S and CP814S top out at 391V. The control signals are
Pin 4 stable @ 3.4V
Pin 6 goes 1.1V to 0V
Pin 8 goes 3.4V to 0VComment
-
Re: Un55mu630df
OK, so your main board is toggling PS-ON ON and off so the power supply is then toggling on and off which will cause the backlights to flash.
So how about request on post 23?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
-
Re: Un55mu630df
When I hook up the old main board the only voltages I get are on pins 3,5,7, and 9 at 12.7 V. No backlights come on. Standby is 12.7 also.Comment
-
Re: Un55mu630df
So none of the control signals are there at all.
Where did you get the replacement board from?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
-
Re: Un55mu630df
Replacement board I got on ebay, it does have a return. But yes on the original board no other readings.Comment
-
Comment
-
Re: Un55mu630df
While I had two mainboards to look at, I would test everything you can like the voltage regulator ICs fuses etc, on both of them, see if you have any differences in readings.Comment
Related Topics
Collapse
-
by cheeky2I 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... -
by Dani_2024Hi 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...5 Photos -
by JSin21Hoping someone here could possibly help. I have a few questions in regards to compatibility with main boards. But I'll give a quick short run down on what's going on first;
I have Samsung Smart TV UA65MU6100WXXY version DA01
Now years ago it started intermittently playing up after a lighting strike. Lighting hit the block of units i was living in at the time. Ever since that night the TV started having a mind of its own, It would randomly turn itself off or on, and all inputs stopped responding like HDMI, aerial, but USB still worked. Anyway, over the next few months...4 Photos -
by jb_BakHey guys great forum glad to have found it. I bought a Sony XBR 65X900C cheaply because it didn't work. No signs of life at all not even a light/led. All I hear is a brief high voltage sound when I throw the power to it.
Didn't see any obvious signs of damage so right away started checking voltages. This is what I see:
Power Board Connector that goes to Main board
CN6401
Pin 01 NC
Pin 02 NC
Pin 03 "BL_ON": 0V
Pin 04 "N/C"
Pin 05 "STBY 3.3V": 3.5V
Pin 06 "GND": N/C
Pin 07 "AC_OFF"... -
by advantThis thread is about trying to get an Universal Main Board to work with a Sharp TCON and panel.
I have a Sharp LC-46D85UN TV that has had a main board issue. Since this model is from 2009, I am not able to find an exact replacement of the main board. Instead, I decided to see if I can future proof this tv by getting a Universal Main Board (T53U21.2) from China to work with the Sharp TCON (CPWBX4291TPZA) and panel. The universal main board supports a 8 bit dual channel LVDS interface whereas the TCON requires a 10 bit dual channel LVDS input. I have modded the LVDS connector to match... - Loading...
- No more items.
Comment