24 Jan
2006
24 Jan
'06
6:20 a.m.
David Betz wrote:
Yes, but these weren't bent (at least by me). They
plug into normal IC
sockets in a carrier module that plugs into the side of the HHC. They
aren't the ones that go inside and must have their pins wrapped around
a plastic carrier. There was no evidence of repeated bending on any of
the pins.
Hmmmm. Heat could do it, but I don't know of any reason why an EPROM
would get hot under any reasonable circumstances.
Peace... Sridhar
On Jan 24, 2006, at 8:57 AM, Sridhar Ayengar wrote:
David Betz wrote:
Okay, I figured out the immediate problem. Three
of the pins on one
of the EPROMs have broken off. One was hanging by a thread and fell
off when I inspected it. I see no evidence that the pins remain in
the sockets so I guess they must have fallen off when I removed the
EPROMs to read them in my EPROM programmer. I suppose this suggests
that they may have fallen off *before* I read them and that is why
your SnapFORTH ROMs don't work. I don't think that's the case
though because I'm sure I would have noticed that. Do EPROM (or
chip pins in general) get more brittle as they get older? I've
never had this type of problem before. These are gold colored (and
plated I assume) pins if that makes a difference.
They definitely get brittle if repeatedly bent.
Peace... Sridhar