Inside Tank Dimensions L x W x H (Inches/Millimeters) : 19.5 x 11.75 x 8 / 495 x 297 x 200 With heat/power set into "200 watts" and timer set in 30 minutes (depending on corrosion). I used the following specs (below) of ultrasonic cleaner. This procedure will give you idea which components to concentrate when the ultrasonic cleaning is done.ĥ. Detailed and Record all affected corroded parts and cross-reference it to the schematic diagram. This will exposed all visible corrosion (using microscope).Ĥ. After questions above are done., you can begin by taking out the baseband/bga chip "metal cover". Again, ocular inspection is the best way to do it.ģ. This will give you an idea where to begin. If it is only on the sides, top, under or the whole phone. Ask the owner what position it was soaked in (angle). This means it is in advanced staged of oxidation.Ģ. When "rust" already present on the board, chances are very thin for recovery/restoration. From my experience less people are being truthful. I warn you not to try powering it "on" unless you do the following:ġ. As long as the end user of the device does not try to power the phone on and from day one it will be subject for microscopic inspection for corrosion, 80% of chances you can save the phone from further damage. Here's my deal, it is a case to case basis when we talked about corrosion. Thanks for your post, though, I really like my harsh little rant and I think I'm going to copy it to paste again in the future ) It has a 90% chance of wasting an extraordinary amount of time that you could be using to repair a board that does have a chance of recovery.īut yes, you can for sure pop it in an ultrasonic cleaner and not damage it. All this talk around the internet of various chemicals and techniques for cleaning water damaged boards is only useful to a point-if your board has old water damage, and is "very badly corroded" in multiple sections of the board then (in my experience) it has a less than 10% chance of restoration through the use of chemicals/brushing alone not matter what magic solution is used. At the end of the day, no amount of cleaning is going to be able to restore damaged components and re-connect broken electrical lines. There is no need to spend any time at all worrying about ultrasonic cleaning. Hopefully you won't also need to do hours of troubleshooting to then figure out which bga chips have been damaged by the short circuit heat from someone leaving it on a charger for days while they crossed their fingers. That board is never going to work again unless you do some microsoldering to remove oxidation, reflow corroded solder joints, and replace damaged components.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |