I can't find the fuse you're referring to

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Rowan Conrad @rowanconrad

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发帖于: 2023年3月12日

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I can't find the fuse you're referring to

Máté Szűcs

@mateszucs

So is this the ang 11N60 FET replacement --> https://www.digikey.com/en/products/deta...
Appears to meet the minimum specs.

But I can't find the fuse you're referring to... i have this exact Monitor - LS32D85KTSR/ZA - but it's not completely dead, it turns on long enough for something to get too warm and shuts down... then starts the process over again and it's not worth paying $116 for a power board. Would you elaborate on which fuse and how to find the fuse part #? I am proficient in researching, but finding small electronic parts like this is next level lol...
Thanks -

Image: Location of 11N60 FET?
https://ibb.co/f0S4KH5

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Máté Szűcs @mateszucs 声誉积分: 1 1 · Answer 1 · 2023-03-13T08:51:28-07:00

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Máté Szűcs @mateszucs

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Yes, that's the 11N60 FET on the picture. Sadly your unit has some other problem, not the frequent PFC problem.

The fuse is the main fuse above the mains input connector. If something is getting hot, it shouldn't be blown.

What is getting too hot and is it working properly before it gets too hot? And what is the voltage of the big capacitor next to the FET (be careful, it's mains high voltage)? Did you measure the output voltage and is it actualy missing when it's not working? (This psu is always on, except the backlight psu, even without the main board)

Your link isn't working for me, but the FCPF11N60F looks good to me. But you can measure most FETs with a multieter, in diode or resistance mode the gate shouldn't be connected to the drain or source- in circuit measuring some high resistance is ok.

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Thanks @mateszucs, unfortunately I am not that far ahead yet. In my case,

-the monitors comes on for a few minutes, and then appears to power off (no standby light, no power light, no computer desktop, black screen etc), and left alone, will come back on in 5, or 10 minutes (power light, computer desktop, perfect color etc). However, when it comes back on, the time it stays on is shorter, like a minute, and then turns back off. Again in 5 or 10 minutes it will show a power light and desktop, however it stays on even less time, and this repeats until it no longer is able to power on and show the screen. So at that point, I pull power on it so it quits trying.

-Again, the symptoms appeared to me as though on a cold start, the monitor works fine, and then after so much time, it fails. This sounded to me as heating up issue, but I could be wrong as well.

I haven't opened it up yet, but I will. However, I am by no means skilled at electronics at the circuitry level.

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