norm8332 wrote:Here is a close up of the contacts (sideways). Its worn right through! Click image for larger view. The camera only is in focus in a small area because of the orientation of the contacts. I don't know how much use this VIC had. It did come out of a scrap box and had been there for 20 years. I'll check the others for wear at a later date.
It's always possible Commodore decided to use cheap connectors in the VIC-20cr since the C64 was out by the time it hit store shelves. They probably saw the VIC-20 as a machine soon destined for scrap heap and obsolescence. History shows they were not exactly wrong.
But in the larger context of the argument which this thread is about, using HASL or tin contacts is a guaranteed means to have your cartridge or female connector doomed to a relatively short lifespan.
IMHO, Commodore put the VIC-20cr on the market with the thinking these machines were not expected to last more than 1 or 2 years. My PET style keyboard VIC-20 is now a healthy 36 years old. My VIC-20cr, which I practically never use, is more than 24 years old.
If your photo does indeed show exposed copper then this means oxidation should have appeared in there.
What I just learned from our exchange of the last few days is I should really replace the cart port connector of my CR with a Vector R644.
No one can do everything. Everyone can do something.