How do I fault find a Digivoice decoder 1038/34/35 or 1138/31?

See here the solutions to a variety of different faults that can occur for a Digivoice decoder 1038/34/35 or 1138/31.

Fault: 

When pressing the programming key the led does not light up.

Solution: 

Measure the voltage between terminals “+V” and “0V” of decoder box, if the voltage is lower than +16Vdc, then find the reason of voltage drop or short-circuit.

Fault: 

The programming led flashes continuously.

Solution: 

Measure the voltage between terminals “D” and “0V”, if the voltage is lower than +13,5Vdc, find the reason of voltage drop or short-circuit.

M
Mark is the author of this solution article.

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