Samsung LN22B360C8D doesn't turn on

[ruben53]

This is a Samsung LN22B360C8D with Power supply BN440302A and the main
Board is BN41-01254A.It has the red light on but when trying to turn it on the
red light goe's off and blink twice and the stay on but the tv doesn't turn on.
The voltages at the output for the main board (board disconnected) are:
Pin B-Dim---0v
Pin 14v------fluctuate from 13.99v to 14.32
Pim 5.1v----5.02v (there are 2 pins with same voltage)
Pin NC-------0v
Pin on/off---0v

With board connected voltages are:
Pin B-Dim--0v
Pin 14v-----15.2v
Pin 5.1v----5.08v (both pins)
Pin NC------0v
Pin on/off---0v

On the Big Capacitor C105= 173.3v
Ic PC 101= a)46.5v b)3.57v (pins on the cold side)
c).2v d) 0v (pins on the hot side)
D101= a)0v b)85v c)83v d)173v

Please somebody tell me what to do now to fix my grandsons tv.

[retiredcaps]

Re: Samsung LN22B360C8D doesn't turn on

It has the red light on but when trying to turn it on the
red light goe's off and blink twice and the stay on but the tv doesn't turn on.

Those are excellent clear focused pictures. So many people who come here looking for help can't understand the importance of this.

The red light is your standby light indicating 5V standby is likely good.

The voltages at the output for the main board (board disconnected) are:
Pin on/off---0v

With board connected voltages are:
Pin on/off---0v

The last pin, on/off, is likely the command from the main board to tell the TV to turn on the backlights. It should be high or greater than 3V.

If your multimeter has min/max, see if on/off temporarily spikes at 3V and then drops to 0v.

In addition, if you hookup a DVD player, do you get sound? Can you see a picture if you shine a flashlight on the LCD screen?

[retiredcaps]

Re: Samsung LN22B360C8D doesn't turn on

44MB Service manual at (in zipped format)

http://elektrotanya.com/samsung_ln19.../download.html

Your browser might take up to 1 minute saying "processing" until "Get Manual" shows up.

[budm]

Re: Samsung LN22B360C8D doesn't turn on

Never mind, I miss read the info.

[retiredcaps]

Re: Samsung LN22B360C8D doesn't turn on

How about the Voltages for the ON/OFF, B DIM, and the rest are when the all the connectors are back in place?

Hi budm,

The voltages with the board connected are listed in post #1.

[budm]

Re: Samsung LN22B360C8D doesn't turn on

Ahh, sorry I missed that. So basically main board problem.

[retiredcaps]

Re: Samsung LN22B360C8D doesn't turn on

Ahh, sorry I missed that.

With your surgery, I'm surprised you are so active. You probably missed it because you are tired.

Anyway, glad to see you back, but take care of yourself first.

[ruben53]

Re: Samsung LN22B360C8D doesn't turn on

Those are excellent clear focused pictures. So many people who come here looking for help can't understand the importance of this.

The red light is your standby light indicating 5V standby is likely good.



The last pin, on/off, is likely the command from the main board to tell the TV to turn on the backlights. It should be high or greater than 3V.

If your multimeter has min/max, see if on/off temporarily spikes at 3V and then drops to 0v.

In addition, if you hookup a DVD player, do you get sound? Can you see a picture if you shine a flashlight on the LCD screen?

Thanks a lot for trying to help me.

When I hit the power the voltage on pin on/off spikes to .06v and then drops
to 0v.

Does that means that the problem is in the main board?
The original problem was that the stand by light was blinking and somebody told me the problem was the main board so I bought this board and installed it and now the stand by light stays steady on but the tv doesn't turn on.

[ruben53]

Re: Samsung LN22B360C8D doesn't turn on

Thanks a lot for trying to help me.

When I hit the power the voltage on pin on/off spikes to .06v and then drops
to 0v.

Does that means that the problem is in the main board?
The original problem was that the stand by light was blinking and somebody told me the problem was the main board so I bought this board and installed it and now the stand by light stays steady on but the tv doesn't turn on.

Help,is there somebody else that can help me?

[vinceroger69]

Re: Samsung LN22B360C8D doesn't turn on

was the main board a exact match as in all numbers on white stickers etc match 100% can you retake all the voltages again with the new mainboard in too.

[ruben53]

Re: Samsung LN22B360C8D doesn't turn on

was the main board a exact match as in all numbers on white stickers etc match 100% can you retake all the voltages again with the new mainboard in too.

Thanks for answering.
Yes the replacement board has the same numbers is an exact match.
The voltages that I posted are with the new mainboard.
I want to be sure the problem is in the mainboard so that I can return it to the
seller,the problem is that seller doesn't have another mainboard to replace this one.

[ruben53]

Re: Samsung LN22B360C8D doesn't turn on

Hellow,can somebody tell me if there is a fix for this problem?

[ruben53]

Re: Samsung LN22B360C8D doesn't turn on

Hellow,can somebody tell me if there is a fix for this problem?

This is an update,when I take off the plug that goes from main board to the
T-con board and hit the power the screen turns on but with the T-con plugged
in the screen doesn't turn on.

Does the T-con board and the screen panel is one piece or it can be replaced
apart?

[vinceroger69]

Re: Samsung LN22B360C8D doesn't turn on

does should like the panel or tcon has a short can you upload pictures of the tcon and back of panel so we can see what were dealing with as some of these smaller sets the tcons cant be removed as are part of the lcd screen assembly.

[ruben53]

Re: Samsung LN22B360C8D doesn't turn on

does should like the panel or tcon has a short can you upload pictures of the tcon and back of panel so we can see what were dealing with as some of these smaller sets the tcons cant be removed as are part of the lcd screen assembly.

Here is the picture of the back of tv.The T-con board looks that is part of the screen.
Can this T-con board be fixed?

Iam sorry for the picture isn't complete,I will try again.

[ruben53]

Re: Samsung LN22B360C8D doesn't turn on

Here is the picture of the back of tv.The T-con board looks that is part of the screen.
Can this T-con board be fixed?

Iam sorry for the picture isn't complete,I will try again.

Here is another picture,hope this one is OK.

[vinceroger69]

Re: Samsung LN22B360C8D doesn't turn on

yes thats fixed to the lcd so cant replaced, im not sure what else to suggest you too test maybe wait until a more experienced member chimes in with ideas

[ruben53]

Re: Samsung LN22B360C8D doesn't turn on

yes thats fixed to the lcd so cant replaced, im not sure what else to suggest you too test maybe wait until a more experienced member chimes in with ideas

OK, Thanks.Lets see if somebody else can give any idea,because this panel is
not easy to find a replacement.