Hi there, I completed my CORE module today and powered it by an optimized C64 PSU. The voltages of the PSU are just 5V and around 14V as they are expected to be. But the core gives me a headache. The core is not stuffed with the 7805, instead, I shorted its input and output lines. I accidentally connected the PSU to J1 instead of J2 as suggested in the optimized PSU guidelines but I though that does not matter at all? Anyways, the moment I wanted to start measuring my voltages, I realized that familiar smell of burning electronics. I quickly disconnected everything and found the rectifier burning hot. Everything else seemed to be cool. So I reconnected everything, this time with the PSU at J2. The rectifier stays cool, but the voltage is only around 0,5V at all points within the circuit. Even at the PSu output, the voltage is not correct anymore, as soon as I connect the core (it is 5V as long as the core stays unconnected). I checked my soldering for any shorts but was not able to find any. Everything seems to be ok. When I measure the resistance between +5V and GND on the board, I get a steadily increasing value (natural because of all the capacitors in there) so there is no obvious short between the power lines. Now, I do not know what else to check. Can you give me some piece of advice?