G22000...Tuner-Preamp very good, Power Stage, damaged...
- Thread starter Kale
- Start date
Kale
Super Member
Thanks! But you know... I bought that veneer in USA, because I didnt find anything similar in Croatia what will be good for that job...
Pepa
Well-Known Member
Silk purse from sow's ear. Nice work.
Question: What is it you coated the PC boards with?
Like this one?
Or is it just the lighting that makes 'em look like there's a coating on them?
EchoWars,since Kale is consistent in his Sansui restorations,I believe he is using rosin.
Kale,she looks beautiful :yes: ,and as I have said many times:Bravo maestro !!!
Splendid work.What especially impresses me is complete disassembly and cleaning of each switch, and not just use of DeOxit :thmbsp:
I use it too, but I clean it off, as I don't like the way it looks. At any rate, the Kester flux I use doesn't look that 'clear' after soldering, so I thought Kale might be using some coating. But I guess not, since the edges of the board look clean.
Kale
Super Member
Pepa, you are right... yes I used rosin (colophony) for that job, as Sansui did, but on lightly different way.
After I finish with soldering job, I cleaned all old colophony, and after that I am going to cover board with new layer of colophony. On that way, I removed all dirty, get covered complete board and solder points with colophony (on that way it prevent oxidation solder point, and prevent electrical short circuit by accident, and finally because the boards are made by Pertinax, which is moisture sensitive, on that way I protect that board against moisture too)
You already have seen how bad was looking that right channel board because of some aggressive liquid, if that board was not covered by rosin in the past, today only what I could to do with it is to put it into garbage, because all printed circuit will be gone... that rosin has protected those printed circuit against that aggressive liquid.
After I finish with soldering job, I cleaned all old colophony, and after that I am going to cover board with new layer of colophony. On that way, I removed all dirty, get covered complete board and solder points with colophony (on that way it prevent oxidation solder point, and prevent electrical short circuit by accident, and finally because the boards are made by Pertinax, which is moisture sensitive, on that way I protect that board against moisture too)
You already have seen how bad was looking that right channel board because of some aggressive liquid, if that board was not covered by rosin in the past, today only what I could to do with it is to put it into garbage, because all printed circuit will be gone... that rosin has protected those printed circuit against that aggressive liquid.
Nice work.
Awesome Job Kale
