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Old 2010-01-01, 07:12 PM
Mark & Lynda Mark & Lynda is offline
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Default Contact Cleaner

Anyone know if contact cleaner is safe to spray onto a PCB?

Looking for something to clean this:

the upper circuit board has integral force sensors that are activated through a rubber mat which has raised portions on it that act like springs to push on the force sensors when the buttons are activated.


Can I use Isopropyl alcohol instead?
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Old 2010-01-01, 08:36 PM
waikiki waikiki is offline
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Are you cleaning the board because of lots of dust? If so my husband recommends to just use a can of compressed air.
He builts boards and he does not touch them unless he really has to because of static. He also only cleans them if they get ready dirty since they work fine otherwise.
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Old 2010-01-01, 10:12 PM
Mark & Lynda Mark & Lynda is offline
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The circuit board is from the drivers door module in my car. The module has been acting up and I occasionally cannot open my drivers window or the module goes dead and cannot open any of the other windows. I want to clean the PCB of any particles. Looks clean now but just to be sure.

I was recommended on another forum to take it apart (which I have) and clean the contact points and rubber pad then re-assemble. There are two boards in the module and this is the top half where the drivers side switches are located. I'm hoping this will work otherwise the dealer will have to try and flash the module and if that doesn't work I'm looking at $450 for a new module + another programming charge + labor.
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Old 2010-01-02, 03:32 PM
waikiki waikiki is offline
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Quote:
Originally Posted by Mark & Lynda View Post
The circuit board is from the drivers door module in my car. The module has been acting up and I occasionally cannot open my drivers window or the module goes dead and cannot open any of the other windows. I want to clean the PCB of any particles. Looks clean now but just to be sure.

I was recommended on another forum to take it apart (which I have) and clean the contact points and rubber pad then re-assemble. There are two boards in the module and this is the top half where the drivers side switches are located. I'm hoping this will work otherwise the dealer will have to try and flash the module and if that doesn't work I'm looking at $450 for a new module + another programming charge + labor.
You should be going to an electronic newsgroup for this. My husband recommends this one:
http://forums.parallax.com/forums/default.aspx?f=25
He told me that there's always people reading and you should get a quick reply.

He also suggests to clean the contact points with steel wool (just make sure that you ground yourself otherwise you will fry the chips) and also use a multimeter or continuity meter to check each connection. But you really need knowledge on the board to verify connections and shorts.

Good luck.
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Old 2010-01-03, 06:28 PM
Mark & Lynda Mark & Lynda is offline
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Thanks for the help.

I got everything back together and seems to be working.
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Old 2010-01-03, 06:40 PM
TKG26 TKG26 is offline
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i use cnd tire brake cleaner to clean contacts and electric motors. i have used it on some pc boards as well(sparingly of course)
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