Samsung LN52B530P7F- Loud pop then dead

[stj]

Re: Samsung LN52B530P7F- Loud pop then dead

first post says the ceramic is blown

[mllwd2000]

Re: Samsung LN52B530P7F- Loud pop then dead

1KV:
http://www.digikey.com/product-detai...013-ND/4457639

I go for 2KV, you should replace both of them.
2KV
http://www.digikey.com/product-detai...022-ND/4457650

The fuses are OK, right?

Thanks for the links. The fuse closest to the power plug is blown.

[mllwd2000]

Re: Samsung LN52B530P7F- Loud pop then dead

first post says the ceramic is blown

CP816 is missing some casing on both sides of the cap.

[budm]

Re: Samsung LN52B530P7F- Loud pop then dead

Thanks for the links. The fuse closest to the power plug is blown.

Post #1: "2. Will this cause the tv not to power on at all?"
So it had blown main AC fuse, so yes. Then you better check all the devices attached to the heatsink at least, especially the PFC power MOSFET.

[mllwd2000]

Re: Samsung LN52B530P7F- Loud pop then dead

Post #1: "2. Will this cause the tv not to power on at all?"
So it had blown main AC fuse, so yes. Then you better check all the devices attached to the heatsink at least, especially the PFC power MOSFET.

QP802 has a steady beep on both outer pins.
QP801 has steady beep on 1 outer pin.

[budm]

Re: Samsung LN52B530P7F- Loud pop then dead

Put meter in 200 Ohm scale then check the resistance between the Middle (DRAIN) against the two outer pins, then tell us how Ohms it shows on the meter.

[mllwd2000]

Re: Samsung LN52B530P7F- Loud pop then dead

Put meter in 200 Ohm scale then check the resistance between the Middle (DRAIN) against the two outer pins, then tell us how Ohms it shows on the meter.

802 shows .6 and .1
801 shows .5 and never changed ( stayed 1)

[budm]

Re: Samsung LN52B530P7F- Loud pop then dead

802 shows .6 and .1
801 shows .5 and never changed ( stayed 1)

0.5 Ohms, 0.6 Ohms, and 0.1 Ohms? they are shorted out. Remove them form the board and test them again.

[mllwd2000]

Re: Samsung LN52B530P7F- Loud pop then dead

0.5 Ohms, 0.6 Ohms, and 0.1 Ohms? they are shorted out. Remove them form the board and test them again.

After removing them from the board, I retested with multi meter set on 200 ohm. With negative on drain and positive on gate first then source.

802 - .6 and .1
801 - no change and different readings every test(63.1 and higher)

[budm]

Re: Samsung LN52B530P7F- Loud pop then dead

802 is bad.
801 is also bad if you are getting 63.1 Ohms.
I would change both of them including the PFC Controller IC, PFC diode mounted on the heatsink..
You also need to check any resistors/diodes connected to the Gate for damages.

[mllwd2000]

Re: Samsung LN52B530P7F- Loud pop then dead

Parts ordered, will update after they come in. Thanks everyone for the information and the help.

[mllwd2000]

Re: Samsung UPDATE- Loud pop then dead

Finally got all components in and time to install them..... Works great.
I just wanted to thank everyone for the information, help and for the patience with my lack of knowledge.

[budm]

Re: Samsung LN52B530P7F- Loud pop then dead

Thanks for the follow-up.