EEVblog Electronics Community Forum
Electronics => Beginners => Topic started by: richard295 on December 31, 2014, 05:06:56 pm
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There are 3 relays on this Stanley garage door opener board. One is for lights, one is for closing, and one is for opening. They are Siemens relays in a black wrapper. The one to open is sticking and will operate if you tap the garage opener box. Can this relay be opened (Cover taken off) and the contacts cleaned. It looks like they are sealed. I don't know which is which, but they are all the same. I would like to service the relay that is sticking. I am a newbie. Any help would be very appreciated
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Genraly there goign to fall apart when you take it out just replace it. I am guessing its one of theses? http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_187151_-1 (http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_187151_-1)
$1-10 is probably not worth the time:)
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relays are usually only sealed for soldering ( some have a pip that's meant to be broken afterwards to vent), so if you can physically open it, you can clean, but if sticking the contact plating may be toast by now, so only a temporary fix
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they are old siemens relays and I cannot find them or any cross reference to them. I can buy a new board for $53 so I might just go that way. What would you do?
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Since you have the part number you could share so others can try to find it for you, a picture of the side of the mini relay will help too.
Or go for the $53 board, after all, spread over 10 years is just $5.30 per year.
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What Mike said about cleaning. Once the contacts start to go, they are done. Cleaning will only "fix" it in the very short term. If you have soldering/desoldering gear, fixing is a no-brainer. The relay is a couple bucks, but shipping will be at least $5-7.
One alternative if you can live w/o lights is to move that relay over to the opener.
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they are old siemens relays and I cannot find them or any cross reference to them. I can buy a new board for $53 so I might just go that way. What would you do?
Most relays have a fairly standard footprint so should be possible to find one that fits, or can be adapted
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The part number for the garage door opener board is 921-3317
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The part number for the relays would be infinitely more useful.
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Find a similar sized same voltage relay from a scrap board; solder on some (insulated) wire legs and by judicious bending and poking insert them in the correct cleaned holes in the PCB - et voila. Total cost £/$0
We used to call this an 'oil rig' when I worked in R&D - not sure why. Usually caused by the PCB draughtsperson getting the pin-outs reversed on the prototype.
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The part number for the garage door opener board is 921-3317
Can you get the Siemens part number and cross reference with this?
http://w3.usa.siemens.com/buildingtechnologies/us/en/building-automation-and-energy-management/documents/functionalcrossreference.pdf (http://w3.usa.siemens.com/buildingtechnologies/us/en/building-automation-and-energy-management/documents/functionalcrossreference.pdf)
Please do share the relay part number even if you don't find it in the list you might not be looking at the right thing.
The board part number only hits replacement boards and very low res pictures.