s3 s4 glass uv bonding
i repair my sg4 using uv loca and after two weeks of use some seams appeared in the screen. I used a 36w lamp to cure the uv loca. Where is my error?
Thank you
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Is this something you do on a regular basis?
Otherwise, the error was in sepaerating the glass from the LCD. They are made as one piece and should be replaced as one piece.
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@Wade, "They are made as one piece " is false. The assembly consist of multiple pieces. Glass, digitizer and LCD. The assembly can be separated with the right tools and can be properly adhered together, with the right tools. The issue here is the drying of the LOCA
While many different processes are used today, the typical process consists of the following steps:
Align touch panel sensor and cover lens
Apply adhesive to touch panel sensor
Flip and assemble onto cover lens or Vacuum de-gas before assembly (generally required for medium to large size panels)
Pre-cure with UV / LED wands
Confirm cover lens and touch panel alignment
Full cure with UV / LED chamber or conveyor
Secondary cure — used to cure the shadowed areas between the cover lens ink and flexible printed circuit. Typically either 60°C heat cure for 1 hour or 24 hours moisture cure.
- de oldturkey03