Author Topic: Help identify scratched IC  (Read 790 times)

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Offline soswow

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Help identify scratched IC
« on: August 31, 2019, 10:06:22 am »
I have this broken Dyson fan I wanted to look inside and find if I can fix it. I found a board with clearly burned components. I've cleaned them up with alcohol from soot, and then used methylated spirits to remove close varnish from burned components. IT was removing well from those what I think diodes and IC next to them with a hole in it, but it was too slow. So I tried to use the blade to scrape it off. It worked well with diodes, but I F*ed IC and scraped markings partially away. =(((
Now I am trying to decode what I can, but can't google partial info I have good enough.
I thought maybe some of you can easily identify it ... like "Oh, sure, bud, this is voltage regulator S01dkd - very popular component" =)

Find the Best photos I could make. Last one (chip5.png) has an overal picture of the burned section.
 

Offline CrazyTiger

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Re: Help identify scratched IC
« Reply #1 on: August 31, 2019, 10:26:37 am »
 
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Offline soswow

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Re: Help identify scratched IC
« Reply #2 on: August 31, 2019, 11:49:10 am »
Thank you! yeah, it looks pretty much like it, and it makes sense to have in this consumer product.

Now, I am not sure if I need to replace those diodes ... before I cleaned it up soot was all over between those diodes. But after cleaning it looks like they look all right.

I am I right to assume that those are of this type: https://www.diodes.com/assets/Datasheets/ds16005.pdf ?
 

Offline narkeleptk

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Re: Help identify scratched IC
« Reply #3 on: August 31, 2019, 05:57:47 pm »
I would not be concerned about those diodes at this time unless one is directly connected to that inputs/outputs of that IC that blew.
 
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Offline L_Euler

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Re: Help identify scratched IC
« Reply #4 on: September 03, 2019, 12:28:36 pm »
Wipe a very thin film of heat sink grease across the lettering.
There's no point to getting old if you don't have stories.
 

Offline soswow

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Re: Help identify scratched IC
« Reply #5 on: November 18, 2019, 09:35:23 am »
After replacing IC it didn't turned on. I  should probably bin it.
 

Offline shakalnokturn

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Re: Help identify scratched IC
« Reply #6 on: November 18, 2019, 06:00:52 pm »
LNK series are good at popping themselves.
Usually they'll take (a fuse if there is one) a fusible resistor or inductor with them.

Check diode bridge. Then continuity between bulk capacitor positive and LNK Drain pin, between bulk capacitor negative and LNK Source pin.
 


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