I'm sorry to say,I don't have parts, for either of your very cool boomboxes.I knew what the d8623 was Philips/Magnavox.Very nice box i.m.h.o.but your other one I had to look up.Very nice by the way.I live up here in Redding and we don't really have that kind of selection of grail and semi-grail types.Mostly just older pannys,sharps and a lot of cheesy eggs.I myself mostly collect lower 5000 series Panasonics.Along with some non highly sought after JVCs and Sharps.Don't lose hope hope however as we have a fair few members who do have and or come across b.box like yours.Also your in a great location to find big,fat,juicey boomboxes.The bay area(San Francisco)is were my parents used to go shopping.My mom loved Macy's downtown union square.I used to go upstairs to the electronics section and play with all the high dollar JVC's.Also went to Pacific Stereo a lot to check out all their killer boomers.So I know there are a lot in your area,just gotta try Craigslist and all the secondhand stores.I'm sure there's gotta be a few giant flea markets in the bay area too.It was(1980's)and still is such a large population zone that I'm pretty sure you'll find what you need,or someone here will come through.Mean while could you post a pic or two?😀👌ðŸ˜