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Forums13
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Most Online117 Jan 16th, 2020
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#10673 - 05/12/14 11:33 PM
Re: Otis LRV3 pushbutton
[Re: rollaway-up]
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Joined: May 2011
Posts: 487
E-man
addict
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addict
Joined: May 2011
Posts: 487
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I think some PB boards have a diode and some don't. I remember an Otis guy telling me to be careful when changing them out. Sorry that's not much help but that's all I know about them.
Last edited by E-man; 05/12/14 11:34 PM.
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#10683 - 05/13/14 02:49 AM
Re: Otis LRV3 pushbutton
[Re: Len]
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Joined: Jan 2014
Posts: 432
Vatorgator
addict
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addict
Joined: Jan 2014
Posts: 432
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you took out one of the input chips on the cpu board, this is a typical trouble call, when the board jumper is not removed. need to look carefully, it does not look like a jumper, just a long piece of hard wire, i think it is in the J3 position, maybe J4, anyway if you are lucky, the input chips are in a socket, in which case you can remove the chip and replace with a new one, i have made this repair quite a few times over the years, replacing the chip will get the car back online, sometimes it will take out a couple of chips in the same area, if they are not in dip sockets, then you will have to have it repaired, or break out your soldering gun. good luck
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#10685 - 05/13/14 04:32 AM
Re: Otis LRV3 pushbutton
[Re: Vatorgator]
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Joined: Mar 2013
Posts: 51
rollaway-up
2nd Generation
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2nd Generation
Joined: Mar 2013
Posts: 51
Canada
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Guys, great information thanks.
When i compared them, the only visible difference was the diode was missing the polarity stripe, if it was a jumper, the insulation looked very similar to a diode, and i recall there was a solid jumper wire on the opposite side of the pb from the diode. It was clearly for a hall pushbutton, which has a seperate interface to the controller.
If you forget about the oopsy for a minute and go back to the beginning... When i swapped the existing pushbutton around to see if it would work on another floor input, the 3rd landing still wouldn't latch a call, even with a different assembly. Has anyone lost a car call input before in a similar way and replaced the input chips or entire board as a fix?
Also, i have an LRV4 board in stock, whats involved with the upgrade?
Last edited by rollaway-up; 05/13/14 04:33 AM.
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#10760 - 05/20/14 01:07 AM
Re: Otis LRV3 pushbutton
[Re: rollaway-up]
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Joined: Aug 2011
Posts: 563
uppo72
addict
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addict
Joined: Aug 2011
Posts: 563
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Had in car pushbutton not working (placing a car call) on an LRV 3. Didn't have a replacement board handy so i swapped the assembly with the adjacent rear floor pb (never used) but that didnt fix it.(the old board worked fine on the rear entrance). Car is running but will not travel to level 3 front. Im thinking processor board? Any thoughts?
Then...
Found an identical (so it appears) hall pushbutton board in the shop and i gave that a try (why not its monday). When i energized the controller i could smell the familiar smell of burnt resistor from the cop and now have a lifeless cpu. There is a flashing red light on the processor board and a quick check of controller fuses didnt show anything obvious. Any thoughts?
I take this has a car pcb for serial connection to the controller? If so, then if you have swapped out the button assembly for another floor, of which should have worked(as it appeared these aren't coded for each floor), then to me the car pcb, or the controller has the issue of not latching the serial data. Either way the only real way to find this, will be start swapping boards. Now you have another issue which might take precedence. I always have a healthy cynical view on parts that aren't labelled as good from the depot. When I have these I always label them as good or bad.
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#10765 - 05/21/14 08:35 PM
Re: Otis LRV3 pushbutton
[Re: rollaway-up]
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Joined: Aug 2011
Posts: 29
bayblue
newbie
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newbie
Joined: Aug 2011
Posts: 29
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#10767 - 05/22/14 12:40 AM
Re: Otis LRV3 pushbutton
[Re: bayblue]
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Joined: Jan 2012
Posts: 885
jkh
4 Ever Learning.
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4 Ever Learning.
Joined: Jan 2012
Posts: 885
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Bayblue,
I enjoyed reading that old thread. And I just wanted to leave you with a quote!
"It's not easy being GREEN!" Kermit the Frog
Last edited by jkh; 05/22/14 12:41 AM.
Make good choices,
JKH
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