When I took out the voice board in my TS480 when I sold it, I hit a 
small toggle switch that turned the transmit off.  I am not sure what it 
was called, but the person who bought it found out what it was by 
looking it up on the internet.  All was solved, there is more room to 
put in the voice board in the Ts590.
KD2CDU
On 1/2/2015 1:57 PM, Jim Gammon wrote:
> Installing the VGS1 is not too easy on the 480.  I did it some 5
> years ago when I bought my 480 and remember contending with a
> bundle of delicate wires and some small screws that needed to be
> removed then replaced after installing the chip.  The small
> screws hold a cover over the VGS1 chip and maybe the spot for the
> other filter.  Installing the same voice chip was much easier on
> the Ts590.  73, Jim WA6EKS
>