Reply to "Revision L TIU, no DCS signal on any channel"

gunrunnerjohnOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

Coming up in conventional sounds like the transmitter chips have died. Normally, they don't all go, but if one fails shorted across the 5V power, it kills most of the function of the TIU. My top suspect would be the 74ACT244 parts, one for each channel. Chances are good that not all of them are bad, the trick is finding the one that is dragging the rest down.

8/11/201:49 PM

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