[sdiy] Need help with a SMD kit (OT?)
Julian Schmidt
elfenjunge at gmx.net
Tue Jul 18 16:10:24 CEST 2017
normally the STM32 can handle quite a bit of heat in my experience.
is the MCU already flashed in those kits or do you have to upload the
firmware first?
my guess is the 2nd.
Am 18.07.2017 um 15:57 schrieb Elain Klopke:
> Well.... Nevermind....
>
> I found my solder wick and was terribly happy to get all the excess
> blobs off the chips. The controls and jacks went in with ease. And
> then I plugged it in, fed it power (Red stripe where it is meant to
> be), and nothing happened. No lights. No sound. Nothing. I have a
> feeling that I severely overheated at least the microcontroller if not
> a few other bits of it.
>
> That was a very expensive lesson....
>
> On Tue, Jul 18, 2017 at 6:26 AM, <paula at synth.net
> <mailto:paula at synth.net>> wrote:
>
> Elain,
>
>
> I understand your frustration, I've been there :)
>
> Best way to get rid of solder bridges on SMT chips is to use the
> following;
>
> 1) Solder flux
>
> 2) Solder wick
>
> 3) patience
>
> 4) practice
>
>
> you can buy numbers 1 and 2, simply cover the offending pins in
> flux (I use a syringe) and then use solder wick to lift the bridges
>
> number 3 comes with time
>
> number 4 you can do by grabbing an old PCB and bridging it then
> practicing removing the bridges.
>
>
> Sadly I'm not in the USA else I'd offer.
>
>
> Paula
>
>
>
> On 2017-07-18 08:15, Elain Klopke wrote:
>
>> Hey list,
>> I bought the Elements diy kit from Synthcube and managed to get
>> all the surface mount components attached using solder paste, a
>> tiny syringe, and a hot plate. Everything melted nicely and I
>> only burnt the solder mask a bit because I wasn't quick enough
>> getting it off the hot plate, but the copper traces appear to be
>> still attached to the board so I'm not too worried.
>> And then the problems started. I let the board cool down and then
>> started going about eliminating solder bridges on a couple of the
>> ICs. I cleaned up one side of the microcontroller and then made
>> the other three worse. I got one chip that was a little crooked
>> seated properly and then another popped free and I couldn't get
>> it resoldered.
>> I've stepped away from the kit so I don't do more damage or throw
>> it against the wall in frustration.
>> Is there anyone experienced in surface mount soldering
>> (preferably in the US) that would be willing to fix this mess for
>> me. I'm way out of my depth and am willing to pay postage both
>> ways and a fee for your time.
>> Thanks in advance.
>>
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>
>
>
>
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