[time-nuts] 5370B Input Board Repair

Charles Steinmetz csteinmetz at yandex.com
Thu Jul 20 15:52:10 EDT 2017


> Could it be that someone thought adhesive would be less prone to
> cracking from stress than solder?

More likely, it was a process decision.  They most likely wave-soldered 
the board, but the switch side has gold-plated switch contacts, so they 
couldn't wave-solder that side.  So, to put a few components there, they 
used the adhesive.  (The alternative would have been to hand-solder SMD 
parts on that side, and I'm not aware that HP ever did that.)

Best regards,

Charles




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