@rblake65 start off with a power reset first. Switch off the TV. Remove the power cord from the outlet. Press and hold the TV power button for 30 seconds then release. Now plug the power cord back into the outlet. Turn on the TV. See if that resolves anything.
the 5 blink error code can have quite a few different causes. Ranging from the T-con board to the panel and few things in between. Besides the great answer from @tdunc15 you also want to dig a little deeper. If you have the original TV remote than try to see if this will work on your set:
1. In standby mode, press the following buttons on the Sony remote:
2. On the left side are the blink codes. On the right hand side is the error count.
3. Under 005, you'll see three listings... TCON, HFR, and P-ID (panel).
4. Let us know what errors your set shows.
If this does not work on your set, then you will have to remove the back of your TV and check the boards. Try to rule out/in the T-con board as faulty which is the most common cause for the 5 blinks. Double check your work with those rubber bumpers. I wonder if you actually shortened something out etc. . Disconnect the LVDS cable to the T-CON board, the cable between the Main board and the T-CON board, and see if the error code will change. Let us know what the result is. You will need a multimeter to check for further errors. You also want to consider posting images with your question when you get to the boards so we can see with you see. Use this guide Adding images to an existing question for that