Need help with Samsung LN40E550f7f

[nomoresonys]

Re: Need help with Samsung LN40E550f7f

So after you do the jumper procedure check for your blu-on voltage, if it is still missing, the problem is on the power supply board.

[Kindred1]

Re: Need help with Samsung LN40E550f7f

https://www.youtube.com/watch?v=n54IurMvr6o here's a video explaining the jumper procedure.

ok, so do I jump BLU_ON with b5v and ps_on with A5v?

[nomoresonys]

Re: Need help with Samsung LN40E550f7f

ok, so do I jump BLU_ON with b5v and ps_on with A5v?

Connector off mainboard jumper standby and blu-on backlights should come on and stay on.

[nomoresonys]

Re: Need help with Samsung LN40E550f7f

Try blu-on on with 5v, if that don't turn on backlight you may need to connect ps on blu on and 5v together.

[Kindred1]

Re: Need help with Samsung LN40E550f7f

Connector off mainboard jumper standby and blu-on backlights should come on and stay on.

Ok. Which one is standby?

[nomoresonys]

Re: Need help with Samsung LN40E550f7f

Ok. Which one is standby?

the one with 5 v

[Kindred1]

Re: Need help with Samsung LN40E550f7f

There are 2. A5v and B5v

[nomoresonys]

Re: Need help with Samsung LN40E550f7f

Check video in post 40.

[nomoresonys]

Re: Need help with Samsung LN40E550f7f

There are 2. A5v and B5v

Ok looked at your board again try A5 and blu-on.

[Kindred1]

Re: Need help with Samsung LN40E550f7f

That is a little different, I think you can use either one.

Actually, I was wrong, there are 3. p_dim, A5v and b5v.

[nomoresonys]

Re: Need help with Samsung LN40E550f7f

You know what? I'm not sure about this particular board, might have to wait for one of the pros to lend a hand, sorry. I'm just not sure, no sense risking messing something up.

[nomoresonys]

Re: Need help with Samsung LN40E550f7f

disregard.

[Kindred1]

Re: Need help with Samsung LN40E550f7f

On mine it says like 3.3 or 5 v for blu on but I noticed your blu_on voltage is 13v so better not jumper those, I'm not sure what will happen.

I think you may have misread. BLU_ON is 0v

[nomoresonys]

Re: Need help with Samsung LN40E550f7f

That shopjimmy video in post 40, he is working on a samsung but I don't know if it has all the same workings as yours.

[nomoresonys]

Re: Need help with Samsung LN40E550f7f

I think you may have misread. BLU_ON is 0v

I missread.

[nomoresonys]

Re: Need help with Samsung LN40E550f7f

http://www.shopjimmy.com/samsung-bn4...upply-unit.htm if you click the image it will magnify.

[nomoresonys]

Re: Need help with Samsung LN40E550f7f

Oh crap, my bad I was looking at row1, you can go ahead blu-on is'nt 13 v, it's the row 1 that has the 13.

[nomoresonys]

Re: Need help with Samsung LN40E550f7f

Go ahead and jumper A5 and blu-on. Just make sure you get the right row by tracing it down your connector.

[Kindred1]

Re: Need help with Samsung LN40E550f7f

Jumped it. No backlight.

[budm]

Re: Need help with Samsung LN40E550f7f

Can I see the picture to show how you jump the pins of BL-ON (pin 6) and the A5V (pin 12)?
Did you us resistor or you use jumper wire?
I always use resistor in case the mistake is made by jumping the wrong pins together.