Reddit mentions of Rubyfluid Soldering Flux Paste

I'm no scientist but I doubt silver solder really gives a better connection. I use the overpriced Cardas silver solder because its just so much easier to use, the stuff just flows great. It says its made for audio applications, but its probably just a marketing gimmick to fetch a higher price.

As for flux, generally its not needed at all, some headphone wires have this weird coating on them that solder just wont stick to and flux doesn't even help it. If you want to try it though, Rubyfluid is an old brand that everyone has been using forever.

Cardas:
https://smile.amazon.com/gp/product/B015X68HXW/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
Rubyfluid:
https://smile.amazon.com/gp/product/B0044SD3NU/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

Here are some useful links: Link; Link; Link. The Marantz cost about $58 using good quality replacements. I did a H/K 330B for $9.58. The Marantz 2285 I am working on cost about $90 for parts.

 

You will need a decent soldering iron; solder sucker; desoldering braid; lead solder; flux; and most importantly a multimeter. Here is another gear thread. Most of the manuals are available on Hifiengine. What you can't find there you can check the forums or Sams. Manuals on Fleabay should be an absolute last resort.

 

I would recommend going to a local thrift store and getting some practice junker units. It will take you some time to good at it and you certainly don't want to screw up your good unit. I still don't know anywhere near enough to do more than replace the parts and do basic troubleshooting. Fortunately for people like us, there are a lot of very helpful and knowledgeable persons on the forums who are always willing to lend a hand. Edit: Forgot about the Dim Bulb Tester.

Rubyfluid - I love it.