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hi friends I just repaired a u2 ic on iphone 6 Reparation success I wanted to ask you if the original glue black on u2 ic on the picture 1 Question: what is it used for To solidify the weld ?? If so I can put uv solder mask as in picture 2 thinkss :)
Mise à jour (29/07/2017) Thank you my friend for your answer then I can cover the u2 ic with mechanic uv solder mask (green color) For welding to be consolidated see picture for example
Components which have a covering over them are either sensitive to moisture in the air or have high enough voltages which can short out the component or other nearby logic. As an example a MOSFET has a low & high voltage side which if shorted can burn it out. It’s important to re-recover them with the correct sealer as you don’t want something that can be removed later if needed, and you want something thats quick! UV gasket material like Vitralit FIPG 60102 is a good choice. Using a UV light cures it within seconds. UV masking material also works its tends to be on the thinner side and a bit more expensive. Tip: store your unused tube in a metallic antistatic bag which is UV opaque.
