Hi All,
I have been asked by a friend to repair a Yamaha amplifier from '93 which has a LCD backlight by a 12V globe. The rubber grommet that held the globe in place has failed and the globe was resting on the back of the LCD, which has overheated and destroyed the polarising film. The LCD is configured to be a negative display allowing light through the active segments, so the new polariser needs to be as opaque as possible on unlit segments.
I tried to use a polariser from eBay for an iPhone, but the results were terrible. I am guessing these early LCD modules used some other kind of polariser.
Does anyone has any suggestions of a suitable replacement filter?