Otis 211 Selector

Posted By: Tarth

Otis 211 Selector - 09/05/15 04:23 PM

Received a rebuilt selector board from Unitec, dead on arrival. Missing RJ1 resistor, which feeds power to SSR on board.
Has anyone heard of having to add an external 1k ohm resistor from pin 1 to pin 11 on P1 connector to make these work??

Posted By: Tarth

Re: Otis 211 Selector - 09/05/15 04:51 PM

Actually it may be a 100 ohm resistor.
It is silk screeed with a 1000 on it. It might be 100 with 0 zeroes.
I tested a resistor with 393 on it, and it was 39000(39 with 3 zeroes), and one with 7500 silk screen on it and it read 750(750 with 0 zeroes, does that sound right.

Posted By: NewMech

Re: Otis 211 Selector - 09/06/15 12:59 AM

Make Unitec send you a new one. What prompted you to change the selector board?