The story so far ...
I am posting this here because I believe/hope the my problem lies in the power supply side of the board.
This is a PCB from a Franklin Chef FCW16T wine refrigerator. Four years ago it blew the fuse and I replaced it and it blew again before I noticed it had a blown cap, the one on the right. I replaced the cap with as close to the value I had at the time. It worked since then just fine.
Last week the power shut off and came back on around four times with in about ten minutes, after which I could hear what I call a zitsing noise the after another cycle of the power, maybe a slight high pitch noise. Both did not sound good and so I unplugged it. When I took things apart I only saw a blown fuse so I replaced that and plugged it in. With out making any of the previous sounds or any at all that fuse blew as well. The two large caps look ok, but, as I have read hear before a capacitor does not need to show a bloated top to be bad.
As I do not know very much I am guessing/hoping that if it is blowing fuses there is something wrong on the power side rather than the logic side. So based on my description and the image of the board is there anything that you can suggest to test/try? Unfortunately all I have is a meter for test equipment. Let me know if there is anything that I can better identify on the board.
I know based on its history it might just be a cap but since the look ok I, not knowing about power supply circuits, just want to be sure there is not something else it could potentially/probably be. The other components look ok to as far as I can tell but based on the much superior knowledge you all have I thought I would get an opinion on what else it could be.
The older of the two large caps is a 200v 120uf, I have a 200v 330uf, would this work as a test or is 330uf too far?
Thanks for any assistance, I appreciate it.
I am posting this here because I believe/hope the my problem lies in the power supply side of the board.
This is a PCB from a Franklin Chef FCW16T wine refrigerator. Four years ago it blew the fuse and I replaced it and it blew again before I noticed it had a blown cap, the one on the right. I replaced the cap with as close to the value I had at the time. It worked since then just fine.
Last week the power shut off and came back on around four times with in about ten minutes, after which I could hear what I call a zitsing noise the after another cycle of the power, maybe a slight high pitch noise. Both did not sound good and so I unplugged it. When I took things apart I only saw a blown fuse so I replaced that and plugged it in. With out making any of the previous sounds or any at all that fuse blew as well. The two large caps look ok, but, as I have read hear before a capacitor does not need to show a bloated top to be bad.
As I do not know very much I am guessing/hoping that if it is blowing fuses there is something wrong on the power side rather than the logic side. So based on my description and the image of the board is there anything that you can suggest to test/try? Unfortunately all I have is a meter for test equipment. Let me know if there is anything that I can better identify on the board.
I know based on its history it might just be a cap but since the look ok I, not knowing about power supply circuits, just want to be sure there is not something else it could potentially/probably be. The other components look ok to as far as I can tell but based on the much superior knowledge you all have I thought I would get an opinion on what else it could be.
The older of the two large caps is a 200v 120uf, I have a 200v 330uf, would this work as a test or is 330uf too far?
Thanks for any assistance, I appreciate it.
Comment