Roland A-90: Battery explaination, cleaning and removing hammer action keys.

YouTube via TheSynthFreq | July 11, 2010

"Hi. :)
This is a short ,hopefully helpful video on how to locate the internal battery and how to go about removing and replacing it. Remember that the A-90 requires a CR2032 battery and that it should be replaced every 5 to 10 years to ensure best operation and avoid a leaking battery, which is dangerous for synths. These batteries are only about $2 and can be found at Walgreen's, or Radio Shack or any other store that carries batteries and electronics.
I also attempt to explain the process of how to remove the hammer action (P4 keybed) keys from the A-90ex. Often times after a long life, there will be lots of dust and grime under those keys since the grease traps the dust that falls in between them. I normally remove every key and weight once a year and give it a thorough cleaning as a preventative measure against dust and also to check the hammers themselves to find cracks or any broken weights. You can tell if a weight is broken by either the loud "pop" that is heard, or if the key "caves in".

Please enjoy the video and let me know if there is any further explanations needed. :)

:) TSF

Note: The A-90ex was not harmed in the making of this video. lol"