TwinTurbo.NET: Nissan 300ZX forum - Different design is all it is. See my reply to freak152000.
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Subject Different design is all it is. See my reply to freak152000.
Posted by DVDBURN (MD) on February 25, 2021 at 12:41 AM
  This message has been viewed 81 times.
In Reply To Interesting. Why doesn't this happen on 90-91 speedos? (n/m) posted by Zeus on February 22, 2021 at 05:33 PM
Message The problem with the 90/91 boards is complete solder failure. They have a high amount of affected areas because of the use of many components and points on the board that connect the bottom layer to the top layer (plated-thru holes with and without components). The newer boards use three ICs that use fewer components and only one bottom layer of traces.

After realizing that even with the repair I was doing that included re-soldering the plated-thru holes without components may fail after a few years, I started putting component leads cut form the new capacitors I install through the holes and solder them to both sides to help insure a longer lasting connection.

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