bigdodgetrain posted:Adrian! posted:bigdodgetrain posted: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.
Yup I'm from the angel's gate Hi-railers' club in San Pedro. It's like a big test-bench. At one time I thought about joining the San Diego club but don't tell anyone though.
if you fix our issue I will make you a deal you can not pass up!
I think step one is to establish that weak signals really are the issue you are experiencing. San Diego is not *so far* so maybe I can pay a visit with my test gear and have a look for you. The TIU you have is a Rev L with the USB port on the side right?
