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Now I have two #C64 wedge PSUs, both perfectly working.
The one on the right might be a slightly older model, but the specs are the same: 9V AC 1A and 5V DC 1.5A.
Oh, wow! It's one of those older #C64 boards made in 1983, assy no. 250407! 
The SID and PLA are socketed and might have been replaced. Other than this, the PCB looks pristine.
How do I open the RF shield of the VIC-II without wrecking it?
The #C64 which I recently repaired is revision 250425, designed in 1984.
The first thing I notice is that the SID and the PLA switched places on this newer board. This revision also consolidates all clock generation logic down to a single IC: the MOS 8701 right next to the VIC-II.
