Chip creep, was Re: CEM3310s for sale

[Ingo Debus]

tomg wrote:
> 
> oops ...sorry ...I'm behind again.

Me too... had a gig this weekend...

> > What is "chip creep"? Does the IC move out of the socket by itself?
> 
> Yes that's exactly what I ment. Try this for fun. Turn it off and
> open up a piece that's full of socketed chips. Then just press
> around at random...Hear that? That's the sound of the chip
> finding the bottom of the socket again. Heat ,vibration, shipping
> ...any number of things work them loose.....

Yes, I know this sound well :-)

Thinking about it, this could well have been the reason that my last
3310 died. This was shortly after my synth was seriously overheated.
Silly me - I had put the heatsink of the power supply inside the plastic
case (now it's outside on the back). It got so hot that even an
electrolytic cap started leaking =:-)

> Is that all? humph. Are they in GOOD sockets?

The sockets look like the cheap ones. And they are about 15 years old
:-(. Perhaps it's time to replace them all.

Ingo