Re: Insignia ns-32lcd tv will not turn on
Does any one know how to troubleshoot a main board for the problems I am having? Main board part number 782.32FB18-690C I still think this is a 2 part main board
I would appreciate any help Thank you
Dmoney1
Member
Last Activity: 03-08-2014, 07:51 AM
Joined: 02-26-2014
Location: Il
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Re: Insignia ns-32lcd tv will not turn on
Budm I don't know if the main board is actually 2 separate boards, but I'm looking at them right now. Where do I start?Leave a comment:
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Re: Insignia ns-32lcd tv will not turn on
With a 1K resistor jumping the ON pin, I have a steady 24.67VDC and 17.21VDC. When the ribbon cable is connected from power supply to the main board the 24.67VDC drops 10.5VDC and the 16.7VDC drop to 2.68VDC. this cycle never stops.
The 16.7VDC is measured at the same pin where the 17.21VDC was measured. I think this is the audio outputLeave a comment:
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Re: Insignia ns-32lcd tv will not turn on
Do you know what would cause this or how I can find out what is causing the main board to send this 0VDC then 5VDC signal to power supply. And yes the 5VDC standby is steady.Leave a comment:
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Re: Insignia ns-32lcd tv will not turn on
As soon as the ribbon cable from the power supply to the main board is connected the voltage at the ON pin swings back and forth from 0VDC to 5VDC. The power button has no effect on this tv. The insignia light goes from blue to red repeatedly with the change in voltageLeave a comment:
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Re: Insignia ns-32lcd tv will not turn on
Ok, I found 164.3VDC on main filter cap without cable connected to main board. Once the power supply is forced on by the 1k resistor the voltage on filter cap is 342.3VDC and 24.67VDC at the outputs. Is the main filter cap voltage acceptable?Leave a comment:
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Re: Insignia ns-32lcd tv will not turn on
here are a few pictures of the power supply board also I believe one of the logic boards and the entire tv. quality is not too good on the last two
[ATTACH]81872[/ATTACH]
[ATTACH]81873[/ATTACH]
[ATTACH]81874[/ATTACH]
[ATTACH]81875[/ATTACH]Re: Insignia ns-32lcd tv will not turn on
here are a few pictures of the power supply board also I believe one of the logic boards and the entire tv. quality is not too good on the last two
[ATTACH]81872[/ATTACH]
...Leave a comment:
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Re: Insignia ns-32lcd tv will not turn on
Problem not solved. The dc voltage on the main cap swings back and forth from 265v-278v as the insignia light changes from red to blue continuously. The voltage is the same regardless of inverter connection. I did check the 2 white and 1 black fuse on the inverter and inspected the logic boards for obvious damage. I also checked that their is 5v going to the logic board and the 5v "on" signal coming from the logic board is dropping to 0v then back to 5v repeatedly. I am guessing the problem is in the logic board. Their are 2 threads...Leave a comment:
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Hello monopoly96 I have the same insignia ns 32lcd as you and the same problem to go with it. I wanted to know if you ever figured it out? Any help would be greatly appreciated. Thanks -
Insignia ns-32lcd tv will not turn on
I also am the lucky owner of a insignia ns-32LCD tv. The problem I am having is as soon as the tv is plugged in the insignia light flashes from red for 2 seconds then to blue for 4 seconds and never stops, ever. The power button has no effect. I have read through previous posts and started at the power supply. I have tested the pico fuses,glass main fuse and removed and tested the 2 47mf caps, a 10mf cap near the main cap and also the main cap itself. All caps within specs. All caps also look undamaged visually.
I also temporarily disconnected the button panel to test if the power... -
Re: Insignia 32" LCD TV Model# NS-32LCD
I also am the lucky owner of a insignia ns-32LCD tv. The problem I am having is as soon as the tv is plugged in the insignia light flashes from red for 2 seconds then to blue for 4 seconds and never stops. The power button has no effect. I have read through the previous posts and started at the power supply. I have tested the pico fuses,glass main fuse and removed and tested the 2 47mf caps, a 10mf cap near the main cap and also the main cap itself. All caps within specs. All caps also look undamaged visually.
I also temporarily...Leave a comment:
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