EEVblog Electronics Community Forum
Electronics => Repair => Topic started by: Fisher77 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/iXHSXR)
https://ibb.co/kTyjCR (https://ibb.co/kTyjCR)
https://ibb.co/i03Cz6 (https://ibb.co/i03Cz6)
https://ibb.co/hdekK6 (https://ibb.co/hdekK6)
https://ibb.co/mVKwRm (https://ibb.co/mVKwRm)
https://ibb.co/d7cEe6 (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 (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 (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)
-
Bump