44 mm SE Watch worked fine but battery run time < 3/4 day with average use and health shows < 80%. Used a heat gun while removing screen for battery replacement. Screen turned a strange bronze color (watch was powered off) after heat applied. After screen was lifted up succesfully attached charger and watch booted up with white bar across screen. Face was lifted up when powered up and not pressed back in. Am I cooked?.
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The "strange bronze color" was the airgap between the glass and the LCD screen. The glass is adhered to the LCD with an OCA (Optically Clear Adhesive), but if there is any air bubbles trapped in between (or get in between at a later time) they often appear bronze as it refracts the light in such a way that it makes LCD look like such.
That could be repairable, or simply ignorable, but the white lines/section indicates that you didn't just separate the glass, you tore or otherwise damaged the ribbon cable at the point it connects to the LCD. Effectively severing the connection that tells the screen what pixels to color what way. In essence, the screen works but gets no instructions other than "turn on" in that white section.
That is not repairable, unfortunately, and the entire screen will need to be replaced.
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This is indeed an expert reply. Concise and informative. Thank you. As a follow up q ->even though the ribbon cable “appears”intact under low magnification and has no visible tears it’s possible the damage is not easily apparent?
@nigelmann99450 Yes 100%. I've done many screen repairs in my shop and though rare, even I sometimes still make mistakes that cause this kind of damage. It's not the kind of thing you can even see unless the screen is on.
Thanks for your insights. Cheers
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