{"id":610,"date":"2024-12-30T03:42:22","date_gmt":"2024-12-29T19:42:22","guid":{"rendered":"https:\/\/www.ddzheng.cc\/?p=610"},"modified":"2025-08-05T01:38:00","modified_gmt":"2025-08-04T17:38:00","slug":"roland-xp-80-lcd-replacement","status":"publish","type":"post","link":"https:\/\/www.ddzheng.cc\/?p=610","title":{"rendered":"Roland XP-80 LCD Replacement"},"content":{"rendered":"\n

I have been using the XP-80 I fixed some time back, I recently had to re-open it and re-solder some SMT chips again due to a no-booting issue. While I’m in there I replaced the LCD screen with a new one.<\/p>\n\n\n\n

You need to buy new LCM32080 LCD module. You can buy one from Sinda Display (https:\/\/www.sindadisplay.com\/Contact-us.html<\/a>).<\/p>\n\n\n\n

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There is some difference between the original and the new screen, mainly the backlight voltage. To use the new LCD you need to first modify your XP-80’s main board (or the LCM). If you have to try the LCD, disconnect the synth’s +-15V supply, you will lose audio output and backlight.<\/p>\n\n\n\n

The new LCD has a low-voltage backlight and draw much more current than the original SHARP one. To accommodate that I disconnected the -15V supply to the LCD backlight and connected the LCD backlight negative side to ground. I disconnected the +15V supply to the LCD and connected it to +5V via a 47R resistor. You can use a larger value resistor if you want dimmer backlight. This resistor has to have a power rating of at least 1W<\/strong>! Failing to do so is a fire hazard!<\/p>\n\n\n\n

The new LCD still need the negative bias voltage so that has to be retained.<\/p>\n\n\n\n