Need Roland Parts?
While in the process of fixing a friend's TR-707 I found out something I think is rather amazing for a company today. Roland still has parts in stock for products as old as the 707! I was able to order a new DC socket from them directly for 2$ + 8$ shipping!
I did not see an equivalent on the US site, but if you're in Canada fill out a part request form here and they will reply promptly with the parts office phone number and the part number you need to provide. It may be a good idea to get the part number from the service manual available here on synthmanuals.
While I sincerely appreciate the existence of the alternative (http://www.vintageplanet.nl) since they have rare parts that Roland no longer has in stock, needing just the $2 part I was very happy to be able to get it from them directly.
Since they're shipping from Vancouver I will only have to wait about a week. This is much better than the minimum 15 euro purchase + shipping (and waiting) from Europe!