A few brands offer internal composite to svideo conversion...Kenwood's high-end come to mind. Never heard of conversion to component. Same for VGA...you'd need some decent hardware inside the thing that sells for $100 external just to do it.
I believe only the Pioneer Elite 49TX can perform Composite & S-Video ---> Component conversion. Many other manufactures have composite--->S-Video conversion. If your receiver doesn't have composite ---> S-Video conversion, you can just buy a $5 dongle from partsexpress that will do the job just fine.
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