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In Reply to: RE: Problem with input connection on MF Vdac posted by Tweaker456 on April 04, 2015 at 12:39:47
I presume that you are moving the input connector by grasping the interconnect cable by it's connector. If so, have you tried a different digital interconnect cable?
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Ken Newton
Edits: 04/04/15Follow Ups:
I did make it myself and I have yet to master soldering. I wiggled the wire slightly and did not get it to screw up , but thanks for the reminder. I'll double check the interconnect. Tweaker
Are you using lead-free solder or leaded solder?
You will need to leave your iron in contact with the component for longer with lead-free to ensure sufficient heat transfer to the surfaces to be soldered. A lot of people turn up the iron temperature to compensate. However, this is the opposite of what you want to do and is more likely to cause a dry joint by burning off the flux.
In the worst cases, a dry joint doesn't bond the two surfaces together at all and you can simply pull them apart leaving a powdery solder lump. Otherwise a poor joint will cause the problems you describe - i.e an intermittent connection.
The first thing to do after soldering is to check the joint integrity by pulling on the joint. A good joint should have a shiny surface with a concave surface. Don't be shy to heat up the surfaces before applying the solder - you will quickly get the timing right before you melt the components!!
Regards Anthony
"Beauty is Truth, Truth Beauty.." Keats
Well it was a cold solder joint. The solder I'm using has lead and is copper content solder. I will work on my technique. I did pull on it and it seemed to be solid. Cold solder joints can be tricky basterds. Thanks, Tweaker
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