Seiki SE47FY19 - No backlights

[MEB]

Re: Seiki SE47FY19 - No backlights

I really tried to equate your explanation to this circuit, but would be lying if I said I totally understood. Your knowledge greatly surpasses me, but I will keep trying. Right now I am off to see if I can remember how this thing goes back together and try to get the backlight level turned down. Thanks Mr. Barton and as always budm.

[MEB]

Re: Seiki SE47FY19 - No backlights

Well, I am glad I am not suicidal, but I got the thing back together, backlights work great, but the display is damaged. Glass isn't cracked, but evidently got stressed going into the dumpster and I couldn't keep it lit long enough originally to tell with the backlight problem. I learned a lot though and it was fun so guess I will wait for something else to come along. Quite the bummer as I was really proud of this one. Oh well, thanks to dick and budm, for the enlightenment!

[ReeceyBurger123]

Re: Seiki SE47FY19 - No backlights

Thats shit mate, how did it get damaged ? Ahh well at least you had the pride of fixing the backlight

[MEB]

Re: Seiki SE47FY19 - No backlights

Thanks for your condolences. I literally got this from the dumpster. I guess the previous owner wasn't as gentle as he could have been when he placed it in there. No cracks in the glass, but I will look at the backside when I strip it of parts. Its all good.

[dick_barton]

Re: Seiki SE47FY19 - No backlights

Well, I am glad I am not suicidal, but I got the thing back together, backlights work great, but the display is damaged. Glass isn't cracked, but evidently got stressed going into the dumpster and I couldn't keep it lit long enough originally to tell with the backlight problem. I learned a lot though and it was fun so guess I will wait for something else to come along. Quite the bummer as I was really proud of this one. Oh well, thanks to dick and budm, for the enlightenment!

Are you sure you have put the panel filters back in, in the correct order because that has a major effect on the picture. Also there are plastic pins in the back of the panel to hold the filters away from the leds. These sometimes break off so the filters do not sit correctly behind the LCD panel if they are missing.

[MEB]

Re: Seiki SE47FY19 - No backlights

I just removed the display and there is definitely a crack on the back of the panel. There must be some coating on the front that hides the damage, but it is definitely done for. I am assuming it came from its stay in the dumpster, but for whatever reason this one is toast. Its ok, I learned a lot.

[dick_barton]

Re: Seiki SE47FY19 - No backlights

Pity

[jflores35]

Re: Seiki SE47FY19 - No backlights

Hi. I know this thread is old and I'm new to this site and after reading this post I was hoping that anyone could help me. I tried to google as much as I could but I cannot find any help. I even called SEIKI and they told me that they don't offer tech support.

I have a Seiki TV SE47FY19 and I had to replace the main board but I forgot how to plug in the inverter cable with the power supply. I have a cable that has 4 pins (with 3 cables in it) and the power supply board as 6 pins...where should I connect it to? the pins on the power supply read as follows

GND
GND
ADJ
L/ON
+12V
+12V

[vinceroger69]

Re: Seiki SE47FY19 - No backlights

my guess put black to ground pin but its only a guess but the part on the plug will then fit in the cut out on the connector socket too.

[jflores35]

Re: Seiki SE47FY19 - No backlights

But should I put it on the top ground or bottom ground? This is the part that confuses me because I have 2 grounds

[dick_barton]

Re: Seiki SE47FY19 - No backlights

It's keyed. It will only go in one way without having to force it in. Looking at photo 2, between the white wire and no connection there is extra plastic at the top of the connector between those two pins and this has to mate with the socket.
As Vinceroger69 says the black wire will then connect to the second GND and the yellow wire to +12V

[jflores35]

Re: Seiki SE47FY19 - No backlights

Thank you guys! I'll try that

[MEB]

Re: Seiki SE47FY19 - No backlights

Check out this picture.

[budm]

Re: Seiki SE47FY19 - No backlights

Check out this picture.

Is this the latest pictures of the same board in 2015? I see bad caps.

[MEB]

Re: Seiki SE47FY19 - No backlights

HA. Yes, that picture was from the original teardown photos I kept for prosperity's sake, I guess. Good call!

[dskall]

Re: Seiki SE47FY19 - No backlights

Silicon inside the connector should show you how it goes

[jflores35]

Re: Seiki SE47FY19 - No backlights

perfect!! thanks! MEB

[dick_barton]

Re: Seiki SE47FY19 - No backlights

Well done still having a photo MEB. Goes to show how useful photo's of tear-downs can be.

[vinceroger69]

Re: Seiki SE47FY19 - No backlights

Well done still having a photo MEB. Goes to show how useful photo's of tear-downs can be.

I also think we both advised correctly too i just couldnt think of the keyed socket wording etc when i posted but the white glue inside the socket also made sence to use the firt 4 pins of the keyed socket