I built the 5V supply for the Wave Bubble RC1a according to the errata pages with the following components:
IC2 = LM2733, R3 = 36.5k, R4 = 12k, C20 = 560pF. The regulator would start off ok (~4.8V) but then would drop within a minute to around 3.4V. I then decided to remove C20, and changed R3 to 39k; this worked well for about a minute giving a supply voltage of ~5.3V; however after that the voltage jumped up to ~12.5V and burned the tantalum capacitor (C10).
I've replaced C10, changed R3 back to 36.5k and left out C20 unplaced; however, I am scared to turn it on again as I do not have another tantalum to replace this one.
Does anybody have any suggestions? What values for R3, R4 and C20 did anybody else use? I've seen other designs where people removed C20 but I'm not sure that it's okay to. Any suggestions are appreciated, this is quite frustrating.