Component level repair

26 Jan 2007

...

  1) 90-odd% of DZ11 failures are defective RS232
driver/receiver chips,
 probably damaged by spickes induced on the RS232 cabling  
     If they fry so easily, why not change the RS232 driver for something 
 like max 232?  
They don't fry that easily, my comment is that the rest of the logic on a 
DZ11 card is even more reliable, so that most of the (few) failures you 
get are of the line driver/reciever chips.

Anyway, why do you think the MAX232 would be any more reliable?

-tony

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Component level repair