On Wednesday, May 11, 2016 at 11:30:18 PM UTC-4, Jeff Liebermann wrote:
On Wed, 4 May 2016 15:07:53 -0700 (PDT), wrote:

And if that's your ground mail, I can send you two screws I have off a
non-working 85 that I think needs a main chip. This meter crapped about
8 years ago and I misplaced one of the screws, but if you want the other
two, they're yours. I'm on the east coast so it'll be a week.
John

Thanks. Got the screws today. They fit nicely in the 8060A. However,
there's a bit of an oddity here.
http://802.11junk.com/jeffl/pics/Fluke%208060a/Fluke-screws.jpg
The Model 85 screws fit in the 8060A, but the original screws (as
borrowed from an 8024A) are a bit different. Notice the double
spiral, the different pitch, and that the 8024a screw is a bit larger
diameter. Which style does your 8060A use?


The screws from my IBM 8060A are the double helix. The screws I sent you did not actually come from my 85, but from a newer 77. When asking around if anyone had any dead Flukes (trying to locate that p-jfet for my 85), I was given a 77 that was blasted by a microwave oven. The 77 didn't have the jfet I needed so I ended up fixing the 77 and returning it to the donator as a gift, but not before swapping the screws with some generic screws I had as payment . Those I sent to you because there were three and I only had two from the 85. Whew!


Incidentally, when I removed the 40 pin chip from its socket, I found
that some of the socket contacts had gotten wet and started to
corrode. I've also got an offset on most scales thanks to leakage
across the PCB. Looks like I'll be replacing the socket with
something better, and giving the PCB an alcohol rubdown.


When I removed the chip from the socket, I found there was no corrosion evident but two of the tangs in the socket came apart, so I ordered a new socket and put the repair on hold until it arrives.

John