11/07/03 UPDATE: I have since learned that *sometimes*, the easiest fix is to 
open the cover and tighten all the screws, adding screws (2) as necessary, if 
they are not in place.  This seems to "reground" all the correct connections,
thus eliminating the noise. Since this solution doesn't cost anything, try this
first. If this doesn't correct the problem, you'll probably need to continue 
reading.

(I have also read that Q14, mentioned here, is the same/similar as Q9 in
a Radio Shack HTX-252, so, there is a possibility of RS carrying this replacement
part.  I'm not absolutely positive on this point, for I have not checked into it
myself, but the source seemed to be reputable.  Nevertheless, check to make sure
for yourself before actually substituting.  NTE cross references and such provide
excellent sources for schematic/charateristic/mapping of these IC's.)



For the "pop, crackle, fizz" problem that some are experiencing, Icom's fix for
this has been to replace Q14, 2SC2954-T2B, which is located next to Q19, on the
underside of the mainboard.  This fix requires removal of the mainboard from the
radio.  You may be able to obtain a replacement part with a different number.
I haven't checked the cross-references yet, but I will do so as soon as possible.
The schematics, diagrams, drawings, illustrations, and parts list all apply to 
both mods, Q14 and Q19.

Do NOT attempt these mods if you are not confident in your soldering abilities!
Ask for help from someone locally.  I'm certain there are hams out there who
would be willing to help.