[HECnet] No connectivity to arsgea 4

[Dave McGuire]

On 1/22/21 11:41 AM, Thomas DeBellis wrote:
> 10 years used to be nearly unheard of for retail machines with moving 
> parts.  When nothing is moving, then supposedly there is nothing to burn 
> out.

   I don't know who told you that, but he/she knows jack point squat 
about electronics.

   Materials migration and diffusion across junctions causes 
semiconductor components to fail, tin whiskers cause shorts, some types 
of capacitors dry out and/or have their electrolyte deteriorate or 
crystallize, resistors drift, heat/cool cycles cause PCB flexure 
resulting in cracked solder joints, corrosion in air creeps into 
connector pin interfaces and forces pins apart, the list goes on and on 
and on.

   To be fair, some of the above-listed failure modes do in fact involve 
things moving, though imperceptibly so, my point stands.

               -Dave

-- 
Dave McGuire, AK4HZ
New Kensington, PA