SAMSUNG UE32F4000AW dead no power

[krsta]

Hello.

My mother in law turned the TV on it said no signal, she then unpluged the tv plugged it in and big bang happened. After that no led indicator was glowing.

Took the tv apart and fuse was dead, rectifier is ok, but found the blown blue capacitor near the 9NM60N mosfet between drain and source. Can anyone tell me the value of this cap.


And the mosfet driver model is unreadable like its spilled with some foggy glue.

This is my first time trying to repair a TV, any help would be apreciated.

[thommyX]

Re: SAMSUNG UE32F4000AW dead no power

221k 1kV
220pF 1000V

Thomas

[krsta]

Re: SAMSUNG UE32F4000AW dead no power

221k 1kV
220pF 1000V

Thomas

Thank you for the info.

I have ordered some from ebay. i hope it wont blow up

[lotas]

Re: SAMSUNG UE32F4000AW dead no power

Thank you for the info.

I have ordered some from ebay. i hope it wont blow up

When this capacitor explodes, it can take this transistor with it, and the transistor takes a bunch of other components with it, you need to check everything carefully!

[krsta]

Re: SAMSUNG UE32F4000AW dead no power

When this capacitor explodes, it can take this transistor with it, and the transistor takes a bunch of other components with it, you need to check everything carefully!

All diodes and resistors are ok, no shorted caps arround s3310 mosfet driver
(cant find the datasheet).

Mosfet :

D -> S 0,54V (red probe on source)
D -> S OL (red probe on drain)
G -> D OL (black probe on gate)
G -> S 0,65V (black on gate) resistance 9Kohm
G -> S 1.2V (red probe on gate) resistance 9Kohm

Looks like mosfet is dead. Ill replace mosfet and the driver and try then.
This aluminum heatsing is a pan in the a** to remove, have any tips?

[lotas]

Re: SAMSUNG UE32F4000AW dead no power

S3310 = FAN6755W.
Your mosfet is more likely alive, there is no short circuit.

[krsta]

Re: SAMSUNG UE32F4000AW dead no power

S3310 = FAN6755W.
Your mosfet is more likely alive, there is no short circuit.

I will replace capacitor and fuse and see what happens.

[lotas]

Re: SAMSUNG UE32F4000AW dead no power

Are these resistors alive?

[krsta]

Re: SAMSUNG UE32F4000AW dead no power

Are these resistors alive?

0,3 Ohms each

[lotas]

Re: SAMSUNG UE32F4000AW dead no power

Ok

[RogerH58]

Re: SAMSUNG UE32F4000AW dead no power

I will replace capacitor and fuse and see what happens.

Did you have any luck?

[krsta]

Re: SAMSUNG UE32F4000AW dead no power

Still waiting for the capacitors to arrive. They arrived in my country on 27.05. We have very slow post office. .

Once i ordered Gameboy from Japan.
It took 4 days to arrive in Croatia and 3 weeks for parcel to travel 2 km air distance from post office hub to my house.

[krsta]

Re: SAMSUNG UE32F4000AW dead no power

I had to order a new set of capacitors because the post office lost the package.

They arrived yesterday, soldered a new fuse and cap -> it works

Thank you all for help.

[nomoresonys]

Re: SAMSUNG UE32F4000AW dead no power

So you only had to replace one capacitor and the fuse?

[krsta]

Re: SAMSUNG UE32F4000AW dead no power

So you only had to replace one capacitor and the fuse?

Yes