Insignia NS-39D240A13 Cycling Colors

[Shane711]

I have a Insignia NS-39D240A13 and everyone that owns one of these TVs knows it has the problem with Cycling Colors - Stuck in the color test pattern. You think Insignia would have a recall but instead they turned their back on all their customers.

Pressing exit on the remote will fix the TV temporary but it always goes back to cycling the colors.

So this is a big discussion online in a lot of forums but no one so far has had a fix for this.

I was thinking maybe someone could modify the firmware and disable the Service mode completely. I will upload the file tomorrow.

[Shane711]

Re: Insignia NS-39D240A13 Cycling Colors

Here is the EEPROM File or Firmware File.

The weird thing about this is all the buttons work while the TV is cycling through the colors. I can pull up the menu and adjust the volume. I can literately do everything. The TV says the EEPROM file is Firmware Version 2.00

[Shane711]

Re: Insignia NS-39D240A13 Cycling Colors

So I was thinking. If you press exit it fixes the problem temporary. Why does it keep going back the the color cycling? Somewhere in the program there is an error. If anyone knows how to edit these files then please disable this feature. Why would any ever need to do the color test pattern and besides, if this feature is not turned off the TV is worthless.

[Diah]

Re: Insignia NS-39D240A13 Cycling Colors

to modify firmware you need the cert sign of it then you can compress it again beside its not the right way to ride off this fault. rebel, reflow the main processor are the way to solve it as there of sure bad contact which spark it to inter this mode,, also could be the side control may had S/C

[Shane711]

Re: Insignia NS-39D240A13 Cycling Colors

Every single TV of this model ever made has the exact same problem so I seriously doubt reflowing the processor is going to fix it. This is not a problem with the solder connections.

[budm]

Re: Insignia NS-39D240A13 Cycling Colors

I wonder if the LCD panel LVDS pin has a control line that put the screen into panel self-test mode and that control line get activated.
May have to look for the LCD PANEL spec sheet to get the pinout of the LVDS connector.

[Diah]

Re: Insignia NS-39D240A13 Cycling Colors

Every single TV of this model ever made has the exact same problem .....

so we called it fault manufacturing, which will be how they do assembly the main boards and by whom... weak point soldering now will be more than 80%

[Shane711]

Re: Insignia NS-39D240A13 Cycling Colors

Well I have 2 main boards so I can reflow 1 just to check but I seriously do not think that is the problem.

[Diah]

Re: Insignia NS-39D240A13 Cycling Colors

try to be the first one who will find prime solution for this set.. so do it..

[Shane711]

Re: Insignia NS-39D240A13 Cycling Colors

About the LVDS pin not sure what you mean but anything that fixes the problem is good. modification would be just fine. Here are some pictures. As you can see I added a cooling fan, I forgot why. I had these TV for over a year and have not been able to fix it.

[Shane711]

Re: Insignia NS-39D240A13 Cycling Colors

I have a main board for a Insignia NS-32L121A13 and it is the same board but the LVDS cable is different. I am thinking it will work if I can connect it to the panel.

[capwizard]

Re: Insignia NS-39D240A13 Cycling Colors

it is the same board but the LVDS cable is different. I am thinking it will work if I can connect it to the panel.
Never try with different screen penal. OK, they made main boards for different bland name. with different EEproms, and different LVDS connections.
I did with two tvs have same LVDS connection, same pinout ,still need to change EEprom , then find out picture is upside down.

One tv you will find out has 4 different panels. Why ! With million of tv sales, panels always out of stock.

[fzabkar]

Re: Insignia NS-39D240A13 Cycling Colors

Could we get hold of the V2.09 firmware package alluded to in that other thread?

The V2.00 BIN has an XOR8 checksum of 0x55. I don't know whether this is a coincidence, but this pattern corresponds to alternate 1s and 0s. If the V2.09 BIN has the same checksum, then this would be interesting from a hacking perspective. Also, if there are areas in the EEPROM which are assigned to TV settings, then these areas may be identifiable in a comparison between the two BINs. It may be that the current settings are left untouched by the update, in which case the corresponding locations in the V2.09 BIN may be blank.

[Shane711]

Re: Insignia NS-39D240A13 Cycling Colors

I can't seem to download it. Says you have to register. Looks like I am going to try to register on a web page I can't read, LOL. http://www.power8t.com/down/view_104620.html

[fzabkar]

Re: Insignia NS-39D240A13 Cycling Colors

Another way to locate the checksum byte(s) is to change one particular setting and then compare the before-and-after EEPROM dumps. For example, you could increase the volume by one point (10 to 11, say). The difference in the dumps will then probably consist of two bytes - one for the volume setting and the other for the checksum. Of course this means that you will need to build a jig of some kind.

[Shane711]

Re: Insignia NS-39D240A13 Cycling Colors

I can't even register on the web page so I can not download the file.
As far as editing the dump or anything with it I have no idea how to do that yet.

[fzabkar]

Re: Insignia NS-39D240A13 Cycling Colors

I'm not suggesting that you edit the dump to find the checksum, if that is what you are saying. I'm suggesting that you change the volume setting using your remote control in normal TV operation. Then dump the chip again to see what changes were made by the TV.

[Shane711]

Re: Insignia NS-39D240A13 Cycling Colors

How about I do a channel search, change the language, change the picture settings and adjust the volume? Then I would have to remove the IC from the board to get the dump.

Also I have 2 main boards so I am going to take one and try to reflow the solder of the processor, I doubt it will fix the problem but I will try anyway just to rule it out. I think I will do that Monday.

And what program do I need to edit the dump file? I want to learn how to do it.

[fzabkar]

Re: Insignia NS-39D240A13 Cycling Colors

I would follow up budm's suggestion in regard to the possible existence of a LVDS signal that controls the test pattern. Hacking the program code in the firmware is something which I would not even be able to contemplate doing. At best I could hack the data areas (eg the logo or the key map), but we would need to understand how to recompute the checksum. To this end you must not make more than one minor change. If you do what you are suggesting, then you would be changing numerous bytes rather than just 2. Then how would you know which of them was the checksum byte?

To edit the dump file you would use a hex editor. I use HxD, but there are many others. If I were playing with this TV, I would try to customise the boot logo. Perhaps you could have an image of the planet Saturn against a starry sky, with a message such as "Saturn booting ..."

The logo is located at address range 0x2F9A12 to 0x304A99. That's an image size of 45192 bytes. The resolution is 720 x 480 pixels. I would resize your image to the same dimensions and ensure that it fits within the same area. Your customised image will be smaller than the original, but that shouldn't matter. You could fill the tail end with pad bytes, eg 0x00 or 0xFF. One of these pad bytes could contain an "integrity" byte to adjust the overall checksum so that it remains at 0x55 or whatever is appropriate. In this way we wouldn't need to know where the real checksum is located.

[fzabkar]

Re: Insignia NS-39D240A13 Cycling Colors

WARNING:

The attachment contains a ROM which may have a bad checksum. I have assumed that it should have an XOR8 sum of 0x55 and have adjusted it accordingly. I have replaced the original boot logo with the image in the attachment. I hope it works ... if you are willing to try. :-)