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Samsung PN58C550 Not Turning on
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Topic: Samsung PN58C550 Not Turning on (Read 879 times)
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Fisher77
Regular Contributor
Posts: 138
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Samsung PN58C550 Not Turning on
«
on:
January 14, 2018, 11:46:14 pm »
Took a chance and bought this one for 20 bucks. TV would not turn on when I got it. I found the QP802 MOSFET blown and both the F801S, and the F802s blown. The FET is a 20N60C3 I replaced it and both fuses, turned on the TV, ran for about 5 minutes, and it blew the FET and fuses again. I have checked the components around the FET. All seem to be ok. I then checked the ICX801 which is a 3BR1065JF and the components around it. No pins are shorted on it. Found no problems with any of the components around it. One problem I do have is the capacitor CX898 flew the coop. Never fails when I mess with these small SMD's.
I was hoping someone might be able to tell me what cap might should be there, and get some help diagnosing the problem with this power supply.
Any help is greatly appreciated.
Pictures:
THe top and bottom view of the whole board are from ShopJimmy. I could not get good clear pictures with my camera.
The last picture shows the missing cap location in a red box.
https://ibb.co/iXHSXR
https://ibb.co/kTyjCR
https://ibb.co/i03Cz6
https://ibb.co/hdekK6
https://ibb.co/mVKwRm
https://ibb.co/d7cEe6
Datasheets below are PDF File Downloads
3BR1065JF Datasheet:
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwiV5K25y9jYAhXhRN8KHb0fDJoQFggrMAA&url=https%3A%2F%2Fwww.infineon.com%2Fdgdl%2FInfineon-ICE3BR1065JF-DS-v02_01-en.pdf%3FfileId%3Ddb3a30431ce5fb52011cf41346a204ef&usg=AOvVaw27s5R1GH6ar_ONdFMUxwZ0
20N60C3 Datasheet:
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwjxvpSMzdjYAhWLx4MKHal_BQEQFggoMAA&url=https%3A%2F%2Fwww.infineon.com%2Fdgdl%2FInfineon-SPP_I_A20N60C3-DS-v03_01-en.pdf%3FfileId%3Ddb3a304318f3fe290119090054e32a20&usg=AOvVaw3DmR6X4IjXVbSJBkMJIrVh
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Fisher77
Regular Contributor
Posts: 138
Country:
Re: Samsung PN58C550 Not Turning on
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Reply #1 on:
January 17, 2018, 08:36:16 pm »
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