Reply to "TIU MODIFICATION - SERVICE BULLETIN"

gunrunnerjohnOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

There are no indicates of the internal mod level on the case of the TIU. None of the "fixes" that MTH has installed to prevent the failure of the 74ACT244 chips for the DCS signal drive have been effective. There was a rather extensive thread where we discussed all of this in some detail.

Weak DCS signals, Failed TIU Output Drivers, and Design Solutions devloped under collaboration between AGHR and MTH

I have created a fix that addresses the issue of the 74ACT244 drivers getting zapped, but I haven't had the time to pursue it to it's logical conclusion. TIU DCS Generator Transient Suppression Board.

11/12/199:31 AM

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