Samsung 730BF schematic

[thunder77]

Hi guys!

I need your help.
Does anyone has a schematic for Samsung 730BF 17" LCD? Or service repair manual?

Thank you!

[thunder77]

Re: Samsung 730BF schematic

It seems that both inverters are broken... . I tested with 2 good CCFL lamps and it power on for 2 seconds, but very dimmed and only for 4 cm long...

[budm]

Re: Samsung 730BF schematic

Pictures of the boards? What did you check so far? The caps, transformers, MOSFETS, etc?

[thunder77]

Re: Samsung 730BF schematic

I will post the pics later tonight at 6:00 PM EET.

budm I check almost everything. Caps are good, transformers ok, mosfets ok, inverters ok.
Now the power led is solid green but the CCFL lamps won't power on. I have 5 V and 13... So I am in a big cloud

[thunder77]

Re: Samsung 730BF schematic

Here are the pictures https://onedrive.live.com/?cid=C6176...11954&v=photos

[budm]

Re: Samsung 730BF schematic

I cannot access the link, do not have oendrive account.

[thunder77]

Re: Samsung 730BF schematic

budm sorry. Try this link http://1drv.ms/1GsuwsQ
It should work now.

[budm]

Re: Samsung 730BF schematic

OK, thanks.

[budm]

Re: Samsung 730BF schematic

Great pictures of the bottom side but how about the straight shot of the whole top side?
There are Power MOSFETs on that small PCB in the inverter section sitting between the two inverter transformers that should be checked, resistance testing of the high Voltage winding should also be checked.

[thunder77]

Re: Samsung 730BF schematic

I will check tomorrow; the board is at my office. I will post also a good picture from top side.
So about 12 hours from now I will post pictures from top side.

Thank you so much for your guidance and patience!

[thunder77]

Re: Samsung 730BF schematic

Pictures from top side.

[fzabkar]

Re: Samsung 730BF schematic

Is this what you are looking for?

http://elektrotanya.com/samsung_730b.../download.html

[thunder77]

Re: Samsung 730BF schematic

Yes. But I cannot download!

[fzabkar]

Re: Samsung 730BF schematic

Yes. But I cannot download!

Watch the following message and wait for it to become a "Get Manual" URL:

"This file is downloadable free of charge. ...processing"

[budm]

Re: Samsung 730BF schematic

The service manual does not have any diagram for the power supply/inverter board.

[thunder77]

Re: Samsung 730BF schematic

Thank you fzabkar and budm!

I will try to repair it, and I will tell you if I'll succeed. God help me!