my first soldering

[hussamaldean]

Hi all,
I started soldering after I bought soldering station with hot air gun and I followed dave's video regarding the soldering and these are the results


I want to hear your opinions

Regards
and thanks dave

[wraper]

Looks good. However there are signs of overheat on tantalum capacitors. Especially on close to the edge of the board which is heavily discolored.

[StillTrying]

"However there are signs of overheat on tantalum capacitors."

I'm assuming the OP has soldered only the edge connector connections.

Looks to me like the iron needs to be a bit hotter for the edge connector connections.
I tend to increase the heat a bit when soldering connectors because of the extra metal to be heated.

[hussamaldean]

Looks good. However there are signs of overheat on tantalum capacitors. Especially on close to the edge of the board which is heavily discolored.

I don't think so because when I checked it was clean

"However there are signs of overheat on tantalum capacitors."

I'm assuming the OP has soldered only the edge connector connections.

Looks to me like the iron needs to be a bit hotter for the edge connector connections.
I tend to increase the heat a bit when soldering connectors because of the extra metal to be heated.

I put the temperature 300 and worked fine
350 was so bad

[Terry01]

I would say a good job buddy! Awesome 1st attempt! 

If I was to be picky i'd say just a tad too much solder applied and maybe that is where the colour thing is coming from. We all do that though and it will fix itself with time and is not a problem. It's a good joint that has maybe 1/4 or 1/5 too much solder??? Hardly anything to complain about or pick out.

To summarise....put about 0.0005 less of a milligram of solder on your joints and you'll be good! 

 

[hussamaldean]

I would say a good job buddy! Awesome 1st attempt! 

If I was to be picky i'd say just a tad too much solder applied and maybe that is where the colour thing is coming from. We all do that though and it will fix itself with time and is not a problem. It's a good joint that has maybe 1/4 or 1/5 too much solder??? Hardly anything to complain about or pick out.

To summarise....put about 0.0005 less of a milligram of solder on your joints and you'll be good! 

 

thx and I will keep soldering until the solder station die

[StillTrying]

Well something must be wrong, the joints "RD" and "GND" don't look right.

[Terry01]

Well something must be wrong, the joints "RD" and "GND" don't look right.

Not everything that "doesn't look right" has something wrong with it!  Pot....kettle??   

[hussamaldean]

Well something must be wrong, the joints "RD" and "GND" don't look right.

just the angle
everything looks the same

[Ampera]

Considering I've never been able to solder surface mount, good dang job.

[wraper]

Looks good. However there are signs of overheat on tantalum capacitors. Especially on close to the edge of the board which is heavily discolored.

I don't think so because when I checked it was clean

What do you mean by "clean"? Capacitor itself became dark because of overheating.

[StillTrying]

Well something must be wrong, the joints "RD" and "GND" don't look right.

just the angle
everything looks the same

Did you solder all the SMDs, or just the connector?

[hussamaldean]

Well something must be wrong, the joints "RD" and "GND" don't look right.

just the angle
everything looks the same

Did you solder all the SMDs, or just the connector?

c'mon
I just learned tht soldering

[wraper]

c'mon
I just learned tht soldering

You mentioned hot air, so it was somewhat misleading. If you did not blast this board with hot air, then it was overheated crap from the beginning.

[hussamaldean]

c'mon
I just learned tht soldering

You mentioned hot air, so it was somewhat misleading. If you did not blast this board with hot air, then it was overheated crap from the beginning.

300 and high temperature ?
I didn't use hot air gun

[StillTrying]

You mentioned hot air, so it was somewhat misleading.

You have to read between the lines a bit.

[wraper]

300 and high temperature ?
I didn't use hot air gun

As I said in previous post, you bought crap board which was produced against proper reflow procedures.

[TerraHertz]

That brown tantalum might just be a different colored batch?
Or maybe it's overheating due to electrical failure?

hussamaldean, I too think the TH joints are fine, but better to use slightly less solder in future.
Btw, you will find that fingernails long enough to grip small things are very useful in electronics. Also better for giving girlfriend backscratches.

[hussamaldean]

That brown tantalum might just be a different colored batch?
Or maybe it's overheating due to electrical failure?

hussamaldean, I too think the TH joints are fine, but better to use slightly less solder in future.
Btw, you will find that fingernails long enough to grip small things are very useful in electronics. Also better for giving girlfriend backscratches.

aha
but I hate long nails and I don't have girlfriend
Single Phase and proud as I always say

[wraper]

That brown tantalum might just be a different colored batch?
Or maybe it's overheating due to electrical failure?

No it's not. They never look like this unless overheated, moreover they obvoiusly are from the same batch. Cap on the bottom has only one of it's corners darkened. Either this board was reflowed in crappy IR oven with uneven heating or blasted with (too)hot air by hand.

[hussamaldean]

That brown tantalum might just be a different colored batch?
Or maybe it's overheating due to electrical failure?

No it's not. They never look like this unless overheated, moreover they obvoiusly are from the same batch. Cap on the bottom has only one of it's corners darkened. Either this board was reflowed in crappy IR oven with uneven heating or blasted with (too)hot air by hand.

it is cheap Chinese chip and I didn't use hot air

[wraper]

That brown tantalum might just be a different colored batch?
Or maybe it's overheating due to electrical failure?

No it's not. They never look like this unless overheated, moreover they obvoiusly are from the same batch. Cap on the bottom has only one of it's corners darkened. Either this board was reflowed in crappy IR oven with uneven heating or blasted with (too)hot air by hand.

it is cheap Chinese chip and I didn't use hot air

I already said that you bought a crappy board. If you think that all of such boards are assembled on decent production line, you are wrong. If it's low quantity assembly, it's could be manual or semi-manual process with using cheap equipment.

[hussamaldean]

here is my second attempt

[wraper]

here is my second attempt

Pretty good, much better than many people do after soldering for decades without ever learning how to solder properly.

[hussamaldean]

here is my second attempt

Pretty good, much better than many people do after soldering for decades without ever learning how to solder properly.

yeah but this time I set the temperature to 350 rather than 300 and the results are much better
thx dave