I can not help on why the rottendog whitestar board shuts off on you every few hours. I can tell you I just got one today in the mail for my whitestar Sharkey's Shootout and it is junk! The one I purchased turns off about every 3 to 5 minutes. I also called about it and was told to replug the connectors several times, so I tried this silly concept about 80 times, over approx. 3 hours over and over to no avail.. I have to say I am beyond perturbed with this crappy board, so I put the stern board back in, works like a champ, never shuts off when it is supposed to be on. I bought this so called replacement board because it seemed a viable solution to my transistor problem on a few of the under playfield flash lamps that were staying on. I absolutely wish I would have just used the 280 with shipping to just fix the stern board! I am sorry you have one of these junk boards as I now have! So my advice, fix the original board and trash that rottenjunk board!