There are many threads on this. Here's one that has references to other threads:
Thread on Radio Repair If there is someone who repairs vintage stereos in your neighborhood, you can probably get them to work on it, if you provide them a 6V power supply, which can be bought for cheap off of Amazon or what-have-you, and the schematic, which is also available (lists of where in the thread). Info on the thread about that. Better and cheaper than shipping your radio. The tubes are all available in most cases, the capacitors can (and generally should be) replaced by modern equivalents.
Here is another list:
Southern California Vintage Radio SocietyThis Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=253725