"Robert Morein" wrote in message

"Sander deWaal" wrote in message
...
"Robert Morein" said:

Maybe it has something to do with my silly habit of
resoldering PCBs entirely, regardless of the problem
they came in with :-)

Well sure. That is an unusual habit. But single sided
boards, without plated
through eyelets, tend to develop problems. With Sony
stuff, it's the RCA jacks. With Yamaha, it is the
relays. Sander, surely you've noticed the tactile
"clunk" when a Yamaha relay latches? Tin lead fatigues
very easily from vibration.


I've seen it with components that suffer from mechanical
stress, like in- and output connectors, switches,
potmeters etc. But until now, I've never noticed it with
small-signal
relays.
Reeds have insignificant clunk.
The Yamaha relays are armature driven latchers, not
reeds. They take a big coil pulse and have considerable
mechanical inertia. That's why they sound like little
hammers. Reeds have so little mass, they are barely
audible.

Sounds like a very backwards design. All that is needed is
normally-closed contacts, and those are available as reed
relays.