WTF does "S4" mean on blown diode?

[NeedsMoreFlux]

I've looked and it seems most likely to be a 1n5819. But could also be: 1SS367, or: 1SS389.

This is a small SMD diode(probably chinese) inside an electronic vaporizer that I am trying to fix for my brother.

If anyone has any suggestions please let me know.

I have a device to test components, but this one let the magic smoke out when it got salt water in it.

I have looked at many code books. Ebays Chinese s4 caps point to the first option and a lot of them say s4. Some code books list the second and third choices, but when looking at Chinese and name brand caps they have a different number printed on them.

I have a ton of diodes and other components, and of course; I do not have a match for it.

On a side note I now have 4 LCD tv's and a lot of other electronics that I am practicing on. Fun Fun!

Thanks in advance everyone who reads this. I love the community that I see in these forums. As Louis Rossmann said: "it's all about reducing world suck!"

[budm]

Re: WTF does "S4" mean on blown diode?

If you look at the circuit it is connected to then you may be able to figure it out if it is used for switching power supply rectifier, or small switching diode.
More likely to be schottky rectifier diode.
Good clear pictures of the board will help.

[NeedsMoreFlux]

Re: WTF does "S4" mean on blown diode?

I took a few pictures when I had it open. I will try to post them. Thanks for the fast response buddy!

I believe it enables a infrared or capacative touch switch(which no longer works) as the alternative to the mechanical switch(which still works).

And as far as tracing out the circuit... That's alot of traces to follow and I am a bit of a noob. I can diagnose most issues but I am still practicing the enginerding of circuit design. Heck even recognizing a buck/boost converter on a block diagram is a bit of a challenge.

[NeedsMoreFlux]

Re: WTF does "S4" mean on blown diode?

Hmmm... Didn't upload. I'll try again.

[NeedsMoreFlux]

Re: WTF does "S4" mean on blown diode?

Ok. I read the resize guide. I will post in one minute. I have not used photoshop in a while and forgot how to do it in that program... Pics incoming!

[NeedsMoreFlux]

Re: WTF does "S4" mean on blown diode?

Is it working...?

[NeedsMoreFlux]

Re: WTF does "S4" mean on blown diode?

Ok. Finally! If anyone has a Pic 2 Vape feel free to as what the component labels are, if you have blown components.

This circuit goes to the 3 wire white connector on the right side of the last picture.

[NeedsMoreFlux]

Re: WTF does "S4" mean on blown diode?

Aliexpress seems to confirm the 1n5819 number. I will have to solder a through hole diode onto the smd diodes location since I can't wait for it to come from China. Does anyone forsee an issue with that?

[Th3_uN1Qu3]

Re: WTF does "S4" mean on blown diode?

As long as it fits, no problem.

[NeedsMoreFlux]

Re: WTF does "S4" mean on blown diode?

Cool, I finally found some within the U.S.

The only electronics store in town has 1 or 2 for 5 bucks.

I don't want to have to buy another pack for another 5, if it blows it again so I got,a pack of 25 for $2 from Texas.

I'll report back when I fix it.

I also fixed a kitchenaid blender. Good videos on youtube. but they don't cover why the switch wont stay in the off position. That is due to the spring washer breaking or the screw backing out. I bought 2 for $.25 and spent like 3 days calibrating the speed control. I'll try to post more helpful videos on youtbe and posts in here. If anyone needs help diagnosing an issue on anything just let me know.

I alos fixed a few car ECU's. You already know the source of that problem-"BADCAPS!"

[NeedsMoreFlux]

Re: WTF does "S4" mean on blown diode?

I put in a through hole 1N5819. Finally got it soldered in.

The capacitive/infrared switch STILL does not seem to be working.

Then after trying out the momentary switch... SMOOOKE....

So it looks like a 8legged AN3102(?) no idea. Googled and can't find it.

I looked at the 40(?) leg I.C. Which I had just cleaned with a toothbrush and alcohol-for the 5th time. And there was a tiny solder bead bridging 2 of the legs, I tried for a long time to unbridge them, and finally succeeded-using a razor blade to seperate them while the solder was hot..

I've been looking for shorts and have not found any so far.

[NeedsMoreFlux]

Re: WTF does "S4" mean on blown diode?

So,IDK why the an3102 decided to kill its self... FML.

[Relayer]

Re: WTF does "S4" mean on blown diode?

Hello NeedsMoreFlux,
When I had a look at the last picture you posted up, I nearly had a heart attack.
The brown colored glue smeared on at the factory on the connector side can possibly cause major problems. Please see my 3 posts in another Forum:

[url=http://www.edaboard.com/showthread.php?t=371555[/url]

(Sorry, but "Insert Link" isn't working for me)

How old is the Vaporizer?
Is the brown glue flaky and loose around the edges?
Regards,
Relayer

[NeedsMoreFlux]

Re: WTF does "S4" mean on blown diode?

I'm not sure what you're referring to. I see clear glue near the blown diode. None of the glue is flaky-I think I removed most of the flux. and I see black glue on other components. I'll take another look at the pictures. I've had to set that on the back burner and try to get some of these LCD T.V.s fixed and sold-they are taking up too much space!

The vaporizer-I believe it less than 5 years old.