GGG posted:If you build this board build in a LED light that illuminates when the TVS Shorts. While the design is meant to prevent the TVS shorting rapidly, I am sure after enough hits even the new one will short. Since it doesn't show up as a power short, like the input/output TVS, but will degrade DCS signal (which might not be detected on a small layout) a LED would be nice. It must be serviceable easily also.
Lastly, there are plenty of REV L TIU out there with out this TVS mod form MTH. Therefore your TIU is not susceptible to this exact failure. Your failure will be the Transmitter chip.
Most people do not have the issues this San Diego club has. I have repaired plenty and they have not come back. Frankly, I probably only worked on a few (less than 5), that had the TVS mod.
So the sky is not falling. But this mod may make the Rev L TIU much more robust. G
not sure you have the correct club mentioned.
ADRIAN! is from the angels gate Hi-railers which is outside long beach calif.
However the san diego 3 railers is having the same issue.
