Cold Solder Shorts 1/2 worked around [edit]

Started by petemoore, July 29, 2006, 01:05:12 PM

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petemoore

  I have a working wah, using the spare board I popped in there...
  I'll rebuild everything except re-measured resistors and hopefully the inductor on the old board. Transistors and electrolytic replaced, no wah...hopefully a recapping'll do it... :-\
  Here's original message.Not that you need to share my grief but.
  Pretty sure I just fried my Wah or buffer with it, it touched across V+/V- as I was installing a filter cap.
  YouCH...not sure how this thing works, I was in a little bit of a hurry, course...now  I   have     time without wah to figure this out.
  Electrolytics'll get replaced, Transistors too, maybe if there's a diode there it too 'll get replaced...
  I wonder if...the CS system has the ability to fry little caps by overvoltage or something...???
  What else...oh inductor...and.. hmm I think that's about it other than resistors, wires and the pot...and theories/help appreciated.
Convention creates following, following creates convention.

The Tone God

Well I won't say I told you so...but I guess I just did.

The safest answer is you will pretty much have to go everything. As I suspected when it first came out it is just a controlled short that causes the "soldering" to occur. Despite its efforts to prevent so I am sure that shorting action propagates amongst the rest of the circuit which can cause damage. If you want to learn more about the product you can look here:

http://electronics.howstuffworks.com/cold-heat.htm

To your situation I do think your inductor is safe and the resistors. You might want to check your caps and absolutely the transistors and diodes.

Andrew

Cliff Schecht

Yeah, my dad and I were talking about this the first time we saw the commercial. I love how they don't advertise the fact that it will mess up any IC/transistor.

petemoore

Well I won't say I told you so...but I guess I just did.
  Me and anyone else considering use of one of these.
  Learn from my mistake...Stick with the iron if at all possible, a little burnt insulation is minor, major components damage isn't.
  Use it in 'open areas' circuit wise, in an emergency at your own risk, or don't use one at all, it's worth the wait for the iron to heat.
  This one was a holiday gift, and I was asked repeatedly: "So...you tried out that solder thingy I got you yet?"
  Live and learn, a good size and yellow colored sparking occured between +/- on the DC jack.
  I pulled and will re-use the board, Inductor [hopefully], and existing resistances, if they measure right. At the very least it will require BOBoard solderings, and more than a transistors swapping I tried.
  I popped in the spare board...this one with BCxxx's, original inductor ['flatsided round /flattop black], and trimpot mods...actually sounds really good !!!...
  It gave me a reason to try this board out again...it was with 18V supply / rarely used multicircuit box.
Convention creates following, following creates convention.