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原帖由: davidshanlay ,

文本:

Do not use jewelry cleaner. That is just a joke and do nothing.

First remove the shields from the board, then take photo of the board for record if there is any corrosion.

-Then ultrasonic with sweeping frequency with contact cleaner mixture heated to 65C and run one minute for each side

-After ultrasonic use 99.9% Isopropyl Alcohol to bath the board

-Air dry the board

-Oven heat to get rid of the moisture with 275F for 30 minutes. Make sure you have some shields on top and bottom as the heater rails do not hear directly to the board. I use plywood on the top and bottom shelves and place the boards on the middle shelf. That way the board is evenly heat up and some connectors don't get damaged.

If you do not have proper equipments it is just waste of time and money to try.

If on budget, try to buy delrui ultrasonic from China. Good quality with affordable price. Half the cost of name brands with more features.

use Branson EC, MG Chemical Alcohol and distilled water.

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