My Avatar My Avatar Modifying a Talking Timer, Type B PC Board

by Miami Mike, 02/05/2012.


Type B, Step 6 - On the top of the board, cut a trace.

This is the only modification to the top of the PC board.

Cut a trace.


Type B, Step 7 - On the bottom of the board, cut a trace.

Cut a trace.


Type B, Step 8 - Scrape away the green coating.

Scrape away the green coating.


Type B, Step 9 - Cut a trace.

Cut a trace.


Type B, Step 10 - Scrape away the green coating on both sides.

Scrape away the green coating on both sides.


Type B, Step 11 - Cut a trace.

Cut a trace.


Type B, Step 12 - Scrape away green coating.

Scrape away green coating.


Type B, Step 12 - Add three jumpers as shown.

Add three jumpers as shown.


Finished! Check the two metal diaphragms on the board that go under the VOICE and SOUND buttons to make sure they haven't fallen out of place, then reassemble the timer and test it.

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