[Elecraft] K3 Speaker Amp - sub side inop

[Don Wilhelm]

  Dave,

There is a way to solder those small pitch ICs - just run a bead of 
solder over all the pins, and then use solder wick to remove the 
excess.  Only caution, all the leads must contact the pads at once for 
this to work - remove ALL the solder from the pads first, and make 
certain none of the leads on the new IC are bent.  If you can manage a 
3rd hand, a bit of pressure on the chip while doing the solder wick "mop 
up" will help assure you do not wick solder that is between the pad and 
the lead.

73,
Don W3FPR

On 8/27/2010 3:47 PM, Dave Hachadorian wrote:
>
> I was able to remove the old chip by cutting all the leads, and
> removing them one by one, but when I looked at the tiny pads on
> the circuit board, I chickened out. I couldn't see any way to
> solder those pins to the pads without shorting them to each
> other. They are EXTREMELY close together.
>
> I ended up sending the DSP Board back to Elecraft for repair.
>