Re: Nuvision Nuv52fx5 no picture.
does anyone have any other ideas or should I just order the tcon board?
does anyone have any other ideas or should I just order the tcon board?
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Re: Nuvision Nuv52fx5 no picture.
Bump. Still trying to fix this.Comment
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Re: Nuvision Nuv52fx5 no picture.
The problem is that there are two boards involve here, the T-CON and the frame rate conversion board. Did you try pricing these two boards yet? This model is not shown in shopjimmy site.
The other thing will be is to probe the signals using the scope to see where the signals from the main board are lost at which board.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
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Re: Nuvision Nuv52fx5 no picture.
Thanks for the reply. I don't have a scope. So I may have to see about getting the boards.Comment
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Re: Nuvision Nuv52fx5 no picture.
Hi Burner. I have the same TV as you (Nuvision NVU52FX5) and likely the exact same problem. Backlight is coming on but no picture, not seeing the menu screen or input selection.
Did you ever figure out what the problem is? Did you end up replacing the boards, and if so where did you get them?
It almost seems like there is a setting stuck in the wrong position, which I was thinking initially because I found it like this after returning home from travel and figured my kids were messing with it.Comment
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Re: Nuvision Nuv52fx5 no picture.
Quick update for anyone interested. My local electronics shop said my TV has a bad "pre-scaler" board. The pre-scaler board is the one marked with "RSAG7.820.1893" in burner's picture. This is actually made by Hisense, a chinese company that likely manufactured these TVs for Nuvision. This board is available on the Ali Express website, it takes a bit of work to find the right seller but once I receive mine I can post the link here for the unlucky few who own this TV and are looking to get theirs fixed.Comment
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Re: Nuvision Nuv52fx5 no picture.
rezilient:
Did you ever succeed in getting the replacement pre-scaler board (the one marked with "RSAG7.820.1893") from the Ali Express website? I have a problem with the NVU42FX5 model, and I would like to see if it can be ordered. Thank you.Comment
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Hi,
I have a VIZIO E70-E3.
Symptoms: Black screen, no picture, but LED backlights are working.
I probed the power board and voltages are as listed on the board.
Main board appears fine, too.
I believe the problem is either a bad T-CON board, or connection to LCD, or bad LCD.
There are two separate ribbon cables feeding the LCD.
If both are connected, the screen is black.
If only the ribbon cable that feeds the right side of the screen (when viewed from the front) is disconnected, the left side of the screen shows picture and... -
Hello, I disassembled this dead camera, and found this WTF… Two fuses soldered one above the other !
I was pretty sure nobody touched it before, but that can't be from factory. There is flux, and capacitor is probably missing.
The other weird thing : the fuses are « G » fuse : (0.75A – 8V), seems very low. The original fuse should be « O » : (32V 2,5A).
There is « O » mark beside. All fuses have the same mark letter on main board. So, I can deduce it's a « O » fuse.
And this correspond to the issus I saw : when I plug the battery, I measure the voltage dropping... -
Hi guys! I realized you have a lot of knowledge here so i am hoping you could point me in right direction with my odd issue.
The Tv is a Philips 58PUS8545/12, it had no picture but working backlights.
Original T-con:
Opened the Tv and tested to unplug one ribbon cable at a time. With this test i could see that i got fine picture on both halves as long as there was only one ribbon cable connected, with two connected picture were gone.
First replacement T-con:
I thought it might be t-con and ordered new t-con from china(supposedly tested)... -
I could have sworn I posted about this before, but I can't seem to find the post..
To whit..
I have a 60LN5400 that came in.. Backlights work fine.. No display..
Traced the problem to the TCON board.. Blown fuse..
Replaced the fuse.. Blows again.. Replaced the fuse again... This time it fries the marked part on the Main Video board...
Got a new Main Video Board.. Replaced the fuse on the TCON..
The fuse is fine and the backlights come on fine if I don't have the cellophane connectors from the TCON to the... -
I have an Arcelik TV with BOE HV650QUB-F70 TCON board, but I think there's an issue with/around PMIC.
PMIC: iML8940
There is backlight and sound, but no picture. I watched a YouTube video and turned it off, half an hour later it was dead.
Input 12v, fuse ok
DVDD1V2 = 1.2v
DVDD1V8 = 1.8v
DVDD3V3 = 3.3v
VGL = -7v
**VGH = -0.3v
**VCOM0, AVDD, HAVDD = 0v
SWBK1 = 3.3v
SW1 = 12v
VGH to GND resistance is 500kohm as expected
Readings are same after I disconnected the two cables from TCON to panel...
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