So he goes here.
http://www.svx-iw.com/
Click on SVXipedia, then click on "checking error codes", then click on "check transmission codes", then follow the directions on how to pull the code.
The flashing power light at start up is only telling you there is a trouble code stored in your TCU, you have to go through the frustration of pulling the actual code to find out whats wrong. It's a "turn off key, put in drive, then reverse, etc., style thing.
I have yet to make the combination work the first time on 2 separate SVX's. Might take a couple of attempts to get the code/codes to come up.