I've working on a vidiot deluxe board for Granny and the Gators for at least 2 months now and have three VD boards plus a second Working granny to test in. Here is what I've found with having experienced what you are going through. First off most Granny game ROMs are corrupted and need to be Re Dumped so do that first from U4 to U9, you can get a complete set from K's arcade for 65.00. The next thing I recommend is replacing and socketing U11 and U12 as these are the communication chips for that initial seek procedure for U9 once you do all that cross your fingers and you may get boot up if not where I am now is bad processor chips U3,U28 and U18 on all 3 of my vidiot deluxe boards these chips have corroded or broken legs, I'm up to 15 flashes and almost booting. Make sure you also check the legs of all the sockets for game ROMs as well as any other sockets I have plenty of cold solder joints on my sockets and corrosion under the sockets on one of my boards. Good luck it's frustrating but it will be rewarding bringing another Granny and the Gators back to life.

Joe(acejedi)