# Mail Day Thread

**URL:** <https://lookmumnocomputer.discourse.group/t/mail-day-thread/101>\
**Category:** Uncategorized\
**Created:** [January 24, 2020, 7:14pm UTC](https://lookmumnocomputer.discourse.group/t/mail-day-thread/101 "2020-01-24T19:14:46Z")\
**Posts on this page:** 1\
**Showing post:** 2845

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**Author:** ![Sonosus](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/sonosus/32/13679_2.png) [@Sonosus](https://lookmumnocomputer.discourse.group/u/Sonosus)\
**Post date:** [May 11, 2021, 6:27pm UTC](https://lookmumnocomputer.discourse.group/t/mail-day-thread/101/2845 "2021-05-11T18:27:35Z")

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Today I got this! A 1980s Yamaha PSR-12.

 ![IMG_20210511_171819](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/c/c82004a297135d75f8469498b3e6f70a0345f686.jpeg)  
£2 from the local charity shop owner( he puts aside synthy stuff for me 😀) I thought it would be good to have another instrument to play on top of Kosmo. Looking online the sounds seem to come from an FM synth chip, and there’s a few quite invasive circuit bends that I probably won’t attempt ( 50/50 past success rate 😬).  
Some of the bell sounds are a bit cheesy, but it has some good drum patterns and will probably come in quite handy.

Edit: I also found a service manual for the PSR-11 that seems to have the same functions. It has a most _excellent_ exploded diagram that I might just have to print out and stick on the wall.

Edit edit: [YAMAHA PSR11 Service Manual download, schematics, eeprom, repair info for electronics experts](https://elektrotanya.com/yamaha_psr11.rar/download.html)

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