I have come to a dead end on this and would like some help. Most of the repair I have done has been bad caps, so I don't know where to go with this one. When I check the voltages at the power board and at the main board they are all OK. I did the flashlight test and did not see an image. So I replaced the T-con board with a used one that I believe to be good and still no picture. Any help would be appreciated.
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Insignia NS-LCD47HD-09 no picture
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Re: Insignia NS-LCD47HD-09 no picture
Do you get backlights ? Common issue with this chassis is the mobo not sending the Blon signal meaning backlights wont fire on.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/
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Re: Insignia NS-LCD47HD-09 no picture
Ok do you have a DMM ? No point just throwing boards at it, you need to diagnose this properly.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/
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Re: Insignia NS-LCD47HD-09 no picture
You need to check the BL-ON signal on the inverter board, you need to remove that black cover so you can see if the pins of those two big white connectors are labeled or not.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
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Re: Insignia NS-LCD47HD-09 no picture
OK, you do have all the needed signal for the inverter board to function, so I need to see good clear picture of the inverter board.
Thanks for the nice and clear picture in post 9.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
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Re: Insignia NS-LCD47HD-09 no picture
BTW, that small black fuse with '20' printed on top shows < 1 Ohms of resistance?
https://www.badcaps.net/forum/attach...3&d=1455065642Last edited by budm; 02-10-2016, 10:02 AM.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
Comment
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Re: Insignia NS-LCD47HD-09 no picture
Originally posted by rod30 View PostSince I am not getting back lights I did some checking on the board. It seems as if the fuse located at C55 in the attached picture. On one side I get 24 volts, on the other side 0. So what would have caused this fuse to blow?
https://www.badcaps.net/forum/attach...1&d=1455064479Last edited by budm; 02-10-2016, 10:04 AM.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
Comment
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Re: Insignia NS-LCD47HD-09 no picture
"It seems as if the fuse located at C55 in the attached picture"
The label is a giveaway, not a fuse rather a ceramic capacitor
You can see the label for the fuse on the inverter board pic but not the fuse are those fuses good?Last edited by Caleb; 02-10-2016, 10:06 AM.Liberating magic smoke one part at a time
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Re: Insignia NS-LCD47HD-09 no picture
Originally posted by Caleb View Post"It seems as if the fuse located at C55 in the attached picture"
The label is a giveaway, not a fuse rather a ceramic capacitor
There is only one black fuse with '20' printed on top.Last edited by budm; 02-10-2016, 10:09 AM.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
Comment
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Re: Insignia NS-LCD47HD-09 no picture
You are correct, some things I thought were fuses were not. I have tested both of the large white fuses located near the capacitors and have 24v on both sides. Also I have 24v at the + leg of each capacitor. I am somewhat new at this and will try to do better. Please don't give up on me.Last edited by rod30; 02-10-2016, 01:54 PM.
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Re: Insignia NS-LCD47HD-09 no picture
You need to test that small black fuse I show in the picture in post 11.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
Comment
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Re: Insignia NS-LCD47HD-09 no picture
The black fuse with "20" on the top. Has 24v on the side toward the connector and 1.2 on the other side. Wow, that is small. I have never replaced anything that small. Please give me some idea where I get a fuse like that and how is the best way to replace it. Also, it blew for a reason. Have you had good results just replacing one and not being to concerned why it's blown?Last edited by rod30; 02-10-2016, 02:30 PM.
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Re: Insignia NS-LCD47HD-09 no picture
That black fuse is the common failure fuse used in CMO inverter board, I use PICOII through hole fuse in its place, done so many of them without having the TVs come back with the same blown fuse.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
Comment
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Re: Insignia NS-LCD47HD-09 no picture
You can test (in ohms) from the side that gets no voltage to ground and reply back.
Sometimes fuses fatigue over time and there is no fault just an open connection. If the ohm reading is in kohms you probably just have a failed fuse, if its in tens or hundreds of ohms you have a fault that blew the fuse.
btw sorry budm you replied as I was typing : )Liberating magic smoke one part at a time
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