Non-optimal SID PSU

[Snoozr]

I've bought 2 C64's from Ebay and neither of their PSUs supply 9V (they both have four pins but only supply 5V - the 9V is dead apparently.  I saw someone said it could be a fuse but I have no idea how to open the brick).  So the clean-cut optimized PSU is out for me even though I built it.  I have been running one of Smash's Cores plus LCD on a 12V 600mA wall wart.  I also can get 5V out of my optimized PSU circuit running off of my Ebay PSUs. 

So, are there any options that a noob could follow?  Here is what I was able to come up with.  Buy a second wall wart and run it straight into the SID module from Smash, but TK said 100mA is recommended and I would be way over at 600 mA.  Or the current wall wart is actually switchable (12V, 9V, 7.5, 6, 4.5, and 3), so I could buy a second one, switch it to 9V and then add the 5V from the PSU circuit.  This would give the optimal 14V as described on ucapps.de (but the mA would be high again).  Or I could keep rolling the dice with Ebay.   :-\ :-\  Or if it was advisable, I could switch the existing wall wart to 9V (or keep it at 12V), "tap into" the 9V that occurs across J1 of the core, and then I could route that over to the SID.  Hopefully the current drain on the core + LCD would take the "tapped" mA down closer to 100.

If anyone has any suggestions, I'd be very grateful ;D ;D ;D

[stryd_one]

no need for dice rolling, just buy another, and if it's dead, refund :)

[stryd_one]

Don't think 100ma will be enough :(

[Snoozr]

OK - deleting above link to prevent confusion...