INSIGNIA NS-L47Q09-10A dropped now black screen

[jason424]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

I took a picture of the item I think ur talking about. I can't make out the first line which seems to be the brand but the second line is 2PCS02 and the third line 60923.
I assume it's this?
http://m.aliexpress.com/item/768011167.html

[budm]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

ICE2PCS02' Check the DCV between VCC PIN 7 and GND PIN 1 when power switch is activated (PS-ON is present). You will be making Voltage measurement in the hot side so do not touch anything with your hands or body, you should at least plug the TV into the GFCI outlets.

[jason424]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

I got 13.4 when testing pin 1 and 7

[jason424]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

I got 13.4 when testing pin 1 and 7

Looking at your pdf budm I assume that this passes since the doc states "The
operating range is between 11V and 26V". Where do I go from here?

[budm]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

Looking at your pdf budm I assume that this passes since the doc states "The
operating range is between 11V and 26V". Where do I go from here?

ICE2PCS02G
VCC (Power Supply)
The VCC pin is the positive supply of the IC and should
be connected to an external auxiliary supply. The
operating range is between 11V and 26V. The turn-on
threshold is at 11.8V and under voltage occurs at 11V.
There is no internal clamp for a limitation of the power
supply.

Check the VINS to see if it is OK or not
VINS (Brown-out Sense Input)
This VINS pin senses a filtered input voltage divider
and detects for the input voltage Brown-out condition.
A Brown-out condition of VINS<0.71V, shuts down the
IC. The IC turns on at VINS>1.5V.

[budm]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

Power supply bd. Insignia ADPC24330BB1 (715T2802-1, 715T28021) PS
http://www.shopjimmy.com/insignia-ad...upply-unit.htm

[jason424]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

To check the VINS I would read between the VINS pin and ground pin correct?

Also, I've seen used boards out of broken lcd tvs that are tested and verified, would you recommend them (since they are half what your link is)? They are the same 24330BB1 number.

[budm]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

To check the VINS I would read between the VINS pin and ground pin correct?

Also, I've seen used boards out of broken lcd tvs that are tested and verified, would you recommend them (since they are half what your link is)? They are the same 24330BB1 number.

1) Yes.
2) You just have to match the P/N on the barcode sticker.

[jason424]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

OK I will post result later today. Thank you budm for all the help, I truly appreciate it.

[jason424]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

The VINS tested out at 1.7. I assume that's why it's not powering? Now what? Time for a new board?

[budm]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

The VINS tested out at 1.7. I assume that's why it's not powering? Now what? Time for a new board?

It has to be: per IC data sheet, the IC turns on at VINS>1.5V.
So the Voltage is OK since you are more than 1.5V, the IC is on but not driving the PFC MOSFET.
You can try new IC or new board.

[vinceroger69]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

being as this tv has been dropped etc maybe it is a hairline crack on the pcb that you cant see/find i personally would try another board if cheap enough just hope none of the ccfls are damaged too.

[jason424]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

Is there a way to look at the ccfls to see if they are damaged before buying the replacement board?

[vinceroger69]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

only if you remove the panel i guess unless to visually see but theres a risk of cracking the panel etc as so thin i would just try another power supply you can always re sell it if theres any issues ie cracked panel you cant see etc.

[jason424]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

OK, so the boards I'm seeing have stamped on the 715T2802-1 but I have 715T2802-3
Does this matter?

[jason424]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

OK, so the boards I'm seeing have stamped on the 715T2802-1 but I have 715T2802-3
Does this matter?

Any one know if the last digit matters before I order?

[budm]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

What are the numbers on the bar code sticker?
http://www.shopjimmy.com/insignia-ad...upply-unit.htm
Per shopjimmy: Partial part number (24330BB1) is found on barcode sticker.

[jason424]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

What are the numbers on the bar code sticker?
http://www.shopjimmy.com/insignia-ad...upply-unit.htm
Per shopjimmy: Partial part number (24330BB1) is found on barcode sticker.

(T)24330BB1
But when I look at the board for sale compared to the board I have, the printed number is different so I assume this doesn't matter.

[budm]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

The number on the bar code is the one you should try to match., the number represent the PCBA (Printed Circuit Board Assembly, blank board stuffed with parts), the blank circuit board can be stuffed in many ways to create the PCBA for particular TV requirement, so the blank board can be stuffed to be used in more than one model of the TVs.
I.E. one PCBA may have 10 resistors installed, but another PCBA may have only 5 resistors installed because one model of the TV may not require all those parts to function nut the other model does.

[jason424]

Re: INSIGNIA NS-L47Q09-10A dropped now black screen

The number on the bar code is the one you should try to match., the number represent the PCBA (Printed Circuit Board Assembly, blank board stuffed with parts), the blank circuit board can be stuffed in many ways to create the PCBA for particular TV requirement, so the blank board can be stuffed to be used in more than one model of the TVs.

OK, thank you very much. Ordered a replacement board. Hope this is it and it's not truly the panel.