Just fixed this one today.
It has AUOPTO and the T-CON board with bad AS15G Gamma voltage ref. IC.
It has AUOPTO and the T-CON board with bad AS15G Gamma voltage ref. IC.
Attached Files
-
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=24809 -
Re: Sceptre X460BV-F120 with bad Gamma
Did you do a check of the VGMA voltages and plot them out?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search. -
Re: Sceptre X460BV-F120 with bad Gamma
No I did not, did not have much time and space to do the voltage readings on the T-CON.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
-
Trying to fix a backlight problem with a Sceptre 48" TV.
I found replacement strips with the same part number as the strips in the Sceptre, but the new backlight strips have 5 leds per strip and the ones in the tv has 6.
So I decided to replace the leds instead. I found 3 bad ones. I had no problem removing the bad ones with a heat gun, they came right out. However the leds on the replacement strip would not come out with heat. I use my solder iron as well, they will not come off.
Anyone know how I can remove those leds without damaging them? -
Hello all,
I have a Sceptre X505BV-FMDR8HJ1PE8 tv that had been gradually over time taking longer
and longer to come on, now it will no longer display any image. Original symptoms
are the red standby LED would turn to blue immediately when pressing the power on
button, but there would be a delay for the "SCEPTRE" image to appear on the screen
and backlight to come on. The delay kept getting longer, then it would go from blue
LED back to red. Then when I pressed the power on button again it would bring the
display up and work fine.... -
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... -
The MAX9590 provides 14 programmable voltage references and four static voltage references for gamma correction in TFT-LCD displays. Two register banks are provided to store two sets of gamma reference values. Gamma values are programmed into the banks through the I2C interface and the outputs can switch between values in 0.5ยตs.
The 14 programmable reference voltages are divided evenly into seven upper and seven lower voltages for the upper and lower gamma curves of LCD column drivers.
Each gamma reference voltage has an 8-bit digital-to-analog converter (DAC) and isolation...10-07-2024, 04:18 AM -
I have a sceptre x405bv TV with bad LED strips. The screen displays dimly over the good LED's, and on disassembling it looks like over half of them are dead tested by multimeter diode test on test points. Plugging it in with the panel disconnected (this TV has a combined power and main board), the backlights immediately receive power when the set is plugged in. When the power button is pressed, it flashes brightly then dims, but additional LED's turn or flicker. When it's turned off again some back lights stay on.
Before I order replacement strips I wanted to ask if it is typical...
Comment