miprom hydro won't latch calls?

greenspun.com : LUSENET : Elevator Problem Discussion : One Thread

I think I burned a board but I'm not sure which one and don't have a like job to swap with. The hall and car calls work and call the elevator but none of them latch the light on. It goes on when you press it but doesn't stay on. Any help would be appreciated because my prints don't show the boards.

-- fred (E@yahoo.com), January 21, 2004


what type miprom control do you have?

-- Shane (dkgranny@yahoo.com), January 21, 2004.

It's a 1xp control accoding to my book.

-- fred (fred@yahoo.com), January 21, 2004.

sounds like the output card with the outputs 1uj,2dj,1cj,etc.. has gone bad.they can usually be repaired by replacing the triacs on the card

-- Shane (dkgranny@yahoo.com), January 22, 2004.

Wow I worked on it all day. I switched the input and output cards. I checked voltages...I went crazy...then I found the wire that came out of the connector that goes to SS on the output card.Yikes now thats a tough call. Thanks for your help.

-- fred (E@yahoo.com), January 23, 2004.

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