Repair computer keyboard circuit using aluminium foil.
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Step 1: Detect the Problem in Circuit Using Multimeter.
Disassemble your keyboard by unscrewing all screws in the bottom. You'll see three plastic sheets. Clean any previous liquid spills or dirt.
- upper circuit sheet
- middle plain plastic sheet
- bottom circuit sheet
Using multimeter, detect the fault in circuit. It may take a while in detection, be patient. Isolate the problem and this step is done.
Step 2: Using Aluminium Sheet As Conductor.
Use microwave aluminium sheet. I used shisha smoke foil. Cut a strip to cover the faulty area in circuit sheet.
Step 3: Placing Aluminium Strip With a Drop of Glue.
See the red circle. I placed the aluminium strip in between lower and middle plastic sheet. If you've isolated the fault correctly and placed the aluminium foil without a short. Your keys should work now.
Good Luck ~