I am parting out a PM3320A. The PM3323 also shares many parts. Of particular interest may be otherwise irreplaceable bits: the various analog hybrids (usually marked OBxxxx), CCDs, and various programmable logic (some PAL20xxx/PAL16xxx, plus some PLSxxx ICs). But almost anything you need to fix yours that you are having trouble sourcing is up for grabs to this community. Note I've already stripped some useful bits from some boards, so I may not be able to give you entire boards. I ask only for reasonable shipping costs.