Insignia NS-50DR620NA18 has vertical colored lines, no picture. swapped out tcon board but same issue.
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Insignia NS-50DR620NA18 vertical colored lines no picture
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Re: Insignia NS-50DR620NA18 vertical colored lines no picture
Welcome to Badcaps!
Can you give some history on this TV unit?
- Did this just happen one day?
- Did you get this used?
- What's the ORIGINAL T-CON part number, whats the NEW T-CON part number?Last edited by ngth82; 04-03-2020, 03:56 PM.-Thomas
I'm a hardware engineer focused on networking equipment for my day job. I void warranties and fix consumer electronics for fun.
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Re: Insignia NS-50DR620NA18 vertical colored lines no picture
Any idea if the original owner took this thing apart?
With the back cover removed and the TV on, what happens if you lightly press on the flex cables between the LCD display and the narrow PCBs that connect to the LCD? Does it change the output behavior?
(Example picture attached).-Thomas
I'm a hardware engineer focused on networking equipment for my day job. I void warranties and fix consumer electronics for fun.
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Re: Insignia NS-50DR620NA18 vertical colored lines no picture
Originally posted by daxlw View PostInsignia NS-50DR620NA18 has vertical colored lines, no picture. swapped out tcon board but same issue.
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Re: Insignia NS-50DR620NA18 vertical colored lines no picture
Did you remove the metal frame of the LCD panel assembly to get the tab bonding board (as shown on post 5) and inspect them? Right now the problem is the LCD panel not T-CON or main board.
Can we the whole backside of the TV showing all the boards?
Is the tab bonding board located on the top or the bottom edge of the LCD panel?Last edited by budm; 04-07-2020, 04:14 PM.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-50DR620NA18 vertical colored lines no picture
Check the MLCC caps on the driver board between the tcon and panel for low ohms, ohm mode with tv unplugged from power.Last edited by nomoresonys; 04-07-2020, 04:16 PM.
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Re: Insignia NS-50DR620NA18 vertical colored lines no picture
There's a ton of posts here regarding that, basically if you find one reading off, involves removing the small MLCC caps on the board one at a time and checking it and rechecking the rest on the board, til you find the right one, they are in series so one bad one can make others read bad. It could also be a different problem on the panel but many times it was just one of those silly little caps at fault.Last edited by nomoresonys; 04-07-2020, 05:12 PM.
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Re: Insignia NS-50DR620NA18 vertical colored lines no picture
Well, if you do not have meter to check the resistance of the caps on the tab bonding then you will have bigger problem removing the bad caps and install new caps due to lack of tools and experience.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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