Is my Dynaco Stereo 400 worth repairing for resale?

@puptent 

The Stereo 400 was a kit and it has a ton of parts, but if I can bring it back to spec, or better yet, I might just keep it around. 😁

@mswale 

I built this amp so long ago I barely remember where everything goes. It has VERY little room inside, so I would need the exact power caps, cause there’s no room for anything much larger.  It’s a heavy beast too!

I still have 8 or 9 Dynaco pieces though I tend to grab the tube stuff. Have some solid states like the  PAT-4's & a Stereo 120 but I've never owned a 400. 

There are definitely people that are still interested in Dynaco's. If it's clean & in good working shape you can make a couple bucks on top of the repair costs but not much. With anything it depends on the buyer. What I would do is take your time renovating it for minimal costs but with quality parts. Do it for the enjoyment & keeping old audio alive. 

Then list it for a price you are comfortable with..with the expectations it might not sell right away. Enjoy it in the meantime or box it away. Eventually someone will come around that wants a solid working 400 to add to their collection. And won't mind paying a little extra for one that has been recently brought back up to spec. Fixing one up for a quick sale or needing your small investment money back right away might not end like you would want it to.

I was unable to see the exact one that you have but the 400's with VU meters still fetch a pretty penny. There was a really clean (exterior) 400 without meters on the Bay for like $320 plus shipping. So I'm guessing anywhere from $3 to $500 depending on some things. Although I'm looking at some right now as high as $950 no meters..$1800 with. How long have they been sitting for though. 

If you have the means & time to fix it up I say go for it. Keep your investment as minimal as possible. Or upgrade all the parts & keep it for yourself. 

Your Dynaco 400 might not need any immediate work. Put it on a variac to reform the power supply caps. Then use a multi-meter to check the DC voltage on the two speaker outputs. If those show only a few millivolts of DC try the amp with a pair of speakers. Not all old amps need parts replacement. My 40 year-old Sumo Andromeda - another Bongiorno design - has been in use 24/7 for seven years now without a hiccup! 

Under no circumstances should anyone buy "restoration" parts from Hi-Fi-Audio-Rocks on eBay.  He's notorious for send poor or wrong components and providing weak or nonexistent documentation.  There's a long thread mover at Audiokarma about this seller.