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Baku 30 or 50 watt sonic cleaning cycle better for motherboard?

Hi I have a Baku BK-9050 30/50 watt Ultrasonic cleaner for removing water damage from cell phone motherboards without having to remove the shields to manually clean them. The problem is that I have little experience with this cleaner and I wanted to know if anyone had used it (or a similar device) and could give me any advice on how best to use it. It has two wattage settings, and can be run either on 30 watts for a maximum of 60 minutes or 50 watts for a maximum of 30 minutes. So my question is, would one setting or the other be preferable for cleaning a water damaged motherboard? I tried looking around online but couldn't find any resources on it, just websites selling the actual cleaning device. If anyone can help me out, or offer any other kind of advice on it, I'd really appreciate it.

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What machine did you use before? what were the results like?

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I've previously only cleaned them by hand with isopropyl alcohol and a soft brush. This method has worked for me, but in some cases where there is significant rust underneath brackets that I can't remove without desoldering them, it doesn't do much good.

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I would set up a rig to suspend the parts in the cleaning solution. I've used just a cut coat hanger and braided wire.

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I'm not sure the ultrasonic cleaner will solve your problem trying to clean inside of the shielded areas of the logic board.

You face two problems here: the solvent and the shielding will also deaden the effectiveness of the sonic wave front of the cleaner.

I would still pop the shield tops off and I would use reagent grade Isopropyl alcohol or straight distilled water with a second bath in Isopropyl alcohol to act as a drier. Don't use the waterless ultrasonic cleaners then tend to make more of a mess than they are worth.

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