you either had the cap in backwards, or a bad cap.
tantalums do things like that.
or your power supply was way over 15 volts.
Checked the cap, it was in correctly, + towards the ground.
I had checked the rails several times before connecting the PSU and during operation and I didn't see any really high voltages, so unless it spiked for some reason I'm hoping that wasn't it. I did see some voltages around 16V but assumed that was OK? Those caps are only rated for 16V so not sure what they can take...
So, hoping I just had a bad cap. Unfortunately I didn't have spares and also took out a resister in the power supply (which hopefully saved the pass transistor).
Parts should be in hand in just a few days.
Still no word on the transformers from CineMag!
What is the pitch? If it is 5mm then even the 10uf/50V MKS2 cap will fit given enough clearance around it. You could use a much larger electrolytic for this (100uf) but I prefer film caps for this role given how quick they are.
My Cinemags showed up and the pin spacing is off and the diameter is a little large. I'm working with Dave (and Craig) to see if we asked for the wrong transformer configuration or if he sent the wrong one. So if you haven't ordered yet, you might hold up for a day or so while we confirm the BOM etc...
It looks like the right transformer should be the CMLI-15/15PCA. http://cinemag.biz/line_input/PDF/CMLI-15-15PCA.pdf
The pin spacing and diameter looks right.
Cinemag is sending a few over to replace those that they already sent, awesome customer service BTW.
I'd expect Craig to update the BOM accordingly soon.