View Full Version : Newbie soldering problems on Grinch

04-15-2009, 12:38 AM
Newbie Soldering the Grinch
Well after seeking advice here and acquiring a soldering gun, oops sorry a soldering iron. Sorry Wirewrap it does look like I have shot the solder on there with a gun, perhaps with time things will get better. Yes its a nice soldering iron from CSI. So on to working on my 1st Grinch and 1st soldering project also. Timidly starting this adventure the 1st four capacitors went with out to much problem considering the only practice was on a few pieces of wire cut from the leads. Figured it was the same material to be soldered and would be good practice. All went well until.

Moving forward to the power connectors at J1 and J2. After surveying the 2 different connectors it appeared the connector at J1 could be held in place by resting the PCB on top of it and doing it first. However after attempting to solder this in place it seemed I was chasing the solder down the connector. And yes I was as the heat caused the connecting leads with the pressure from the PCB to slightly melt the plastic connector allowing the leads to slide in the plastic and become flush on the top side.

After cleaning up the solder from the chasing episode I was left with 2 rather good joints all things considered. So rather than create any more mess I let the poor Grinch set overnight.

Now finally for the questions and some helping answers I hope:
Well thinking about this and not wanting to destroy the connector or do any damage to the PCB. It seems the J1 connection is just a jumper connection I believe so why not connect the shunt jumper under the board? Thats where the connector leads reside at the moment. It checked out with the continuity checker so any reason that the jumper needs to go on top or any other concerns I need to check into at this point? I do intend to add another Grinch along with this one when and if I succede at this first one.
Would appreciate any comments or help.
Thanks Al
newbie struggling with 1st Grinch

04-15-2009, 05:43 AM

J1 is used to link the power source from the RJ45 to the board.
If you intend to use an external power source connected to J2 then you should probably leave J1 unconnected.

Also, try this link to an excellent video of soldering techniques



04-20-2009, 10:08 AM
Thanks for the website link and jumper information.

04-20-2009, 11:08 AM
You may also want to practice on a 'practice kit' like these to gain more confidence: