I bought a usb car charger to use it on my battery, it is worked fine with me before i decided to sold a small wire inside it,
After soldering, it not work, and the chip 34063 heat up i cant touch it.
I need to know what happed before buying new one and redo it again.

this the board
https://twitter.com/zaherdirkey/status/530725182130753537

i think this similar to it
http://320volt.com/en/mc34063a-ile-5volt-usb-oto-sarj-kiti-12v-24v-giris/

I used 40w solder
I touched it
I resoled the inductor to move down for more fit

What you suggest that I have made?

Thank you in advance.

-forgive me for my bad English-

 

Can you post a photograph of your work?
Examine your work with a magnifying glass. It sounds to me like you have caused a short.
It's possible the heat from your iron caused damage to the chip.

 

I think that you shorted it.Voltage regulators get very hot when they go in short circuit protection mode.

 

I bought a usb car charger to use it on my battery, it is worked fine with me before i decided to sold a small wire inside it,
After soldering, it not work, and the chip 34063 heat up i cant touch it.
I need to know what happed before buying new one and redo it again.

this the board
https://twitter.com/zaherdirkey/status/530725182130753537

i think this similar to it
http://320volt.com/en/mc34063a-ile-5volt-usb-oto-sarj-kiti-12v-24v-giris/

I used 40w solder
I touched it
I resoled the inductor to move down for more fit

What you suggest that I have made?

Thank you in advance.

-forgive me for my bad English-

Buy another in the Pound shop - and don't break it again.

 

Thank you, next time i will be careful using my gun, i will add cooler clip to the chip when soldering. and trying to not touch it.

 

Thank you, next time i will be careful using my gun, i will add cooler clip to the chip when soldering. and trying to not touch it.

Unless you're using one of those big heavy instant heat soldering guns, there's relatively little chance of cooking modern silicon devices.

Those soldering guns also magnetically induce destructive current flows in low impedance circuits.

Those USB chargers are usually pretty small - which increases the risk of solder bridges between tracks if you're not careful.

If the chip got too hot to touch, its almost certainly "toast".

 

Oh yes, I noticed when i soldering another circuit have a led, the led flicking while soldering, I think i have bad gun.

this is my solder
http://snag.gy/u3oeK.jpg

Thank you.

>If the chip got too hot to touch, its almost certainly "toast".

Yes toasted.

 

Oh yes, I noticed when i soldering another circuit have a led, the led flicking while soldering, I think i have bad gun.

this is my solder
http://snag.gy/u3oeK.jpg

That Iron shouldn't cause any particular problems.

The soldering gun I was talking about is a big block with a transformer in it, that drives a hairpin shaped copper element with low voltage - but huge current.

That loop of copper carrying high current can induce current in low impedance circuits.

If the iron pictured is making a LED flicker, you're soldering on a powered circuit - a sure fire way to blow stuff up!

 

No not powered circuit it is a ruler of 1 watt leds (with resestors).
How can i test if my solder pass a power to the circuit?