日本語
Hi Guys,
I have two identical retro boards from the early 90’s where one is uncoated, and the other is green and the tracks are bubbly.
There is air/gas between the copper and the substrate, even though the copper is still continuous and intact, and the board works ok.
Meanwhile, the unprotected board looks great 
I’m hoping someone can give me the industry term for this PCB problem to help in describing it to piers in the collector world,
as I’ve also seen it on older arcade boards, and retro computing.
Cheers
- Comments(1)
A****min
Dec 19.2019, 18:03:48
Those are not bubbles. I guess you have a board without solder mask which was soldered with solder wave. Then it was coated with protective lacquer. What you consider being bubbles is just solder on the tracks.
