[Kenwood] Help! I destroyed my TS-660

[Caitlyn Martin]

Hi, everyone,

OK, for the people who keep insisting that I sound technically competent
-- here is absolute and utter proof that I am not, and probably should
never open my radios.  Can you destroy a radio by putting in a CW
filter?  I can.  

I installed a YK-88C into my TS-660.  The net result is that the radio
"On Air" light is continually on even when the rig is in receive mode. 
T/R switching still works with the key or the SEND/REC button up front. 
I get hiss like the receiver is working, but no signals -- not even the
expected birdies on 6m.

The only thing I see that looks at all wrong to me is a solder bridge
between one of the tabs on the side of the filter and a pin where a
capacitor attaches on the back of the IF board (the one with the little
yellow wire attached), but the more I clear solder off the more it looks
like there may never have been any daylight there.

I'm really angry at myself about now, as I've successfully installed
filters in a TS-660 before, not to mention a TS-120V and a TS-130V. 
Argh!  Any clues?  ...or do I need to box it up and send it down to
AVVid?  

I have very little ham equipment nowadays and being without this rig for
a number of weeks would really hurt.  Any help is gratefully
appreciated.

73,
Caity
KU4QD