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Restore Samsung Galaxy Tab Performance with an Ultrasonic Cleaner

One of the best Android tablets in the market, the Samsung Galaxy Tab lives up to its name. With a 7-inch multi-touch WSVGA display with resolution at 1024x600, the Samsung Galaxy Tab is lightweight, slim and designed to give you the entertainment of a larger tablet. It is equipped with a 1GHz processor, dual cameras, crisp display, expandable memory of up to 32GB and running on Android 2.2. A tablet like this certainly requires great maintenance, making a printed circuit board (PCB) ultrasonic cleaner indispensable.

Samsung Galaxy Tab units can take a lot of abuse including being left out in the rain, dropped in the soup or otherwise rendered inoperable. Unless your Samsung Galaxy Tab is irreparably damaged, it can most likely be restored to operation in an ultrasonic printed circuit board cleaner. With the same technology used by printed circuit board manufacturers, ultrasonic circuit board cleaning quickly and safely removes contaminants from the delicate components in your Samsung Galaxy Tab.

Here you will learn:

  • How an Ultrasonic PCB Cleaner Works
  • How to Select and Set Up your Circuit Board Cleaner
  • How to Disassemble, Clean and Reassemble your Samsung Galaxy Tab

How Ultrasonic PCB Cleaners Work to Restore Your Samsung Galaxy Tab

Ultrasonic bath cleaners are used in a wide range of applications to remove virtually any soil or contamination by using the power of cavitation action. This is the term used to describe the implosion of billions of minute bubbles contacting Samsung Galaxy Tab PCB components and surfaces. The bubbles are created by generator-powered ultrasonic transducers bonded to an ultrasonic cleaning tank and typically operate at an ultrasonic frequency of 37 to 42 kHz (37,000 to 42,000 cycles per second).

When the bubbles implode contaminants are quickly and safely removed from PCB surfaces without damaging delicate parts. So tiny are the bubbles that they penetrate minute cracks, crevices and blind holes that might lodge dried residue, dust and dirt particles. The ultrasonic PCB cleaning system will complete the job in as little as 10 to 15 minutes. And it will do it in an environmentally friendly manner because the ultrasonic circuit board cleaning solution formula is a biodegradable concentrate that minimizes disposal problems.

How to Select and Set Up your Samsung Galaxy Tab Circuit Board Ultrasonic PCB Cleaner

Ultrasonic PCB cleaners come in a variety of sizes from bench top units to a floor-mounted industrial ultrasonic cleaning machine, so you can select any size you need. Our most popular models for cleaning Samsung Galaxy Tab circuit boards are the ¾ gallon Elma EH075EL and 1½ gallon Elma EH150EL. You should select an ultrasonic cleaning system equipped with a frequency sweep function, such as an Elma model, to prevent damage to sensitive components during cleaning. Choose a model also equipped with a heater to improve the ultrasonic cleaning process.

Whatever the model and size of ultrasonic circuit board cleaner you use there are steps to take before cleaning begins.

  1. Fill the ultrasonic cleaner tank to the fill line (or approximately 2/3 full) with ultrasonic cleaning solution such as Elma tec clean A1 diluted 1:20 with water.
  2. Turn on the ultrasonic cleaner, set the heater to approximately 50°C, and operate for about 30 minutes to drive off cavitation inhibiting entrained air. Degassing is complete when bubbles stop coming to the surface and must be performed every time the tank is filled with fresh circuit board cleaning solution.

How to Disassemble, Clean and Reassemble your Samsung Galaxy Tab

Step 1: Disassembling your Samsung Galaxy Tab

There are two screws at the bottom of the unit hidden under small plastic disks. Use a small handy knife or blade to remove it. With a screwdriver, remove the two screws under your Samsung Galaxy Tab. Once these are removed, use a case opener tool, and pry the device open. Start from the bottom and work your way around the rim. Be careful of the buttons. You should then be able to open your device quickly and easily.

With the back case removed, you can now remove the battery which is held by a connector and a screw. First, remove the screw found on top of the battery. You will also have to remove the connector by using your case opening tool to release it from its lock. Pull the battery out.

There are seven screws that need to be removed from the mother board of your Samsung Galaxy Tab. Three are located on top, one on the left and the other three are located at the bottom. Once these are unscrewed, you may now remove the six ribbon connectors on the mother board. Be careful when handling these. You will have to pull up at the camera connector, to get the camera out of the way. Once this is done, lift the circuit board from the unit. Remove the connector for the front facing camera and pull up the frame holding the camera.

You now hold in your hand, your Samsung Galaxy Tab circuit board.

Congratulations! You have successfully removed your circuit board from your Samsung Galaxy Tab! You may now proceed with the next step.

Step 2: Cleaning the Printed Circuit Board

Set the PCB ultrasonic cleaner’s thermostat to 50°C and activate the Sweep mode. While the solution is heating, place your PCB in the basket. If you are cleaning more than one at a time take care that they do not touch each other. Once the operating temperature is reached lower the basket into the cleaning solution and set the timer for 10 minutes. Cleaning time depends on the condition of the PCBs and may have to be adjusted.

At the end of the cycle remove the components from the ultrasonic cleaner. If they are not clean replace them in the bath until the cleaning is complete. Then rinse them in distilled or deionized water to remove all traces of the cleaning solution and avoid water spotting. Dry them with an air blower or warm air dryer.

Safety note: DO NOT reach into an operating ultrasonic bath. Instead remove the basket if you want to inspect or rearrange the parts.

Step 3: Reassembling your Samsung Galaxy Tab

First, you will have to reinstall the frame of the front facing camera and attach it to the circuit board. Once this is done, you will have to position your circuit board in place. The next important step would be to attach the six cables to their respective locations, including the camera connector. Make sure that the camera will not budge. Once the circuit board is in place, return the seven screws back to their original locations. To recap the positions of these important screws, three are located on top, one on the left and the other three are located at the bottom.

Secure the main screws. You may now return the battery of your Samsung Galaxy Tab. Make sure it is secure once again. To do this, you will have to tighten the tiny screw on top and tighten the connector as well. If your fingers don’t do the job, use your case opening tool, to tighten the battery connector.

Place the display assembly and the rear case together. Make sure that there is no gap. Return the two screws and tighten them. Try to shake the tablet gently to ensure that there are no screws and loose pieces inside.

Admire the piece of work you just put back together.

Voila! Start your device and your Samsung Galaxy Tab should be good to go.

More Operating Tips

Any contaminants that rise to the surface of the ultrasonic water bath should be skimmed off and disposed of properly. When the circuit board cleaning solution becomes discolored or cleaning takes longer it is time to replace it. Drain the tank and dispose of the spent solution according to local regulations. Take the time to remove any material that settled to the bottom of the tank. Clean the tank using a cleaning process recommended by the manufacturer.

Questions: Contact the ultrasonic cleaning experts at 973 821-4400

Disclaimer: This advice is not provided by a licensed technician. Follow at your own risk. We assume no liability for any damages caused by following the advice in this article.


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