Samsung UE40ES6530

[nezocas]

Hello,

Need help with this dead tv.
Power supply: BN44-00520C

Found this burned components: FP801S 4amps fuse / DS814 and DS815 both 1n4007 / DS806 1n4007 and CS809 22pF 1Kv.
After all changed pluged only the power supply to AC with a 40W bulb in series..... It ligthed up strong.... so we still have a short.
Didnt find any shorts, made the purchased of the ICS801S (SQD2011K).

Today it arrived, but no changes at all.... still shorted power supply.
Also checked QP805S / QP806S both MDF10N60.

Best regards
Nezocas

[Davi.p]

Are those 3 diodes part of a diode bridge input? If yes the 4th one might be replaced as well

[lotas]

Are those 3 diodes part of a diode bridge input? If yes the 4th one might be replaced as well

No, they are not, firstly, a diode bridge cannot consist of four such 1n4007 diodes with 1A for such a TV, and secondly, all modern TV power supplies already have powerful diode bridges.

[Davi.p]

Topic author, can you post a photo of the board where indicated the bad components? Remember to watch my sticky post.. bye..

[Davi.p]

Lotas, i recall some board models with separate input for the standby PS..

[nezocas]

Topic author, can you post a photo of the board where indicated the bad components? Remember to watch my sticky post.. bye..

Hello,

Here it is the image of the power supply, with the faulty components, marked with a red circle.

Bottom left 4Amp fuse
Bettewen the relay and the bridge rectifier, the 2 diodes DS814 and DS815
Bottom rigth DS806
Middle of the board blue CS809 capacitor 22pF 1kv

Thanks all that are trying to help.

Best regards

[nezocas]

schematic here:

[nezocas]

Hi,

Just received a used board that also ligths up the series lamp like a christmas tree...... but work´s perfecttly on the TV.
The original board, also ligths up the lamp, but I never came across a NON shorted power supply, that ligths up the series lamp. Never pluged it directlly to AC with fear to burn the applied components again.

The original board is NOT shorted, but isnt still funcional.
I will use the "new" board to compare components.

Best regards
Nezocas

[Davi.p]

The board is 3 power supplies in 1, when you plug it with 40w lamp, if it is connected to the rest, the only PS active is the standby one that is few watt powerful, lamp is too strong, try 2 or e 40w in parallel..

[nezocas]

The board is 3 power supplies in 1, when you plug it with 40w lamp, if it is connected to the rest, the only PS active is the standby one that is few watt powerful, lamp is too strong, try 2 or e 40w in parallel..

Hello,

I use a row off series lamps.... each with its own switch.
Even with 150W of lamps, both boards ligth them up stronglly.

[Davi.p]

You said "Christmas tree" so i thought it was flashing.. in standby mode maximum 15/20watt!

[NTVStech]

Star by checking DP801,804and 805.Then check every mosfet in the primary and for shorts on the secondary supply lines.If you don't find anything obvious and still don't want to risk powering it on,you will have to get your bench psu and scope and start doing some dynamic tests.