EX5R Battery Replacement Guide

The EX5 features a unique Extended Synthesis system which incorporates a number of advanced tone generator technologies. AWM2, AN, FDSP and VL. The EX5 is one of the best keyboard Yamaha ever produced.

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EX5R Battery Replacement Guide

Unread post by Derek » Sun Dec 30, 2018 5:01 pm

Hi,

I needed to replace the battery in my EX5R today, and given that it took me ages to find it, as it was hidden under the floppy drive :shock: , I decided that it might be helpful for others for me to write up a guide for it. So, here it is...

Yamaha EX5R Battery Replacement

You can find all sorts of other use guides on my x.factory Librarians Guides page.
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Derek Cook

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Re: EX5R Battery Replacement Guide

Unread post by EXer » Sun Dec 30, 2018 9:51 pm

Hi Derek,

Thanks for writing that guide.

I would just like to add that it's possible to replace the battery without removing the floppy drive and its bracket (I have done it on my EX5R). Of course one can't see the battery holder and one has to remove the old battery and to insert the new one by touch, but that's not difficult once one knows how a Yamaha battery holder is made.
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Re: EX5R Battery Replacement Guide

Unread post by Derek » Mon Dec 31, 2018 8:41 am

Hi,

I hadn't thought of trying that, but then I didn't know where the battery was until I moved the floppy drive. To be honest, for the sake of a few screws and a couple of more minutes, I would prefer to be able to see what I am doing. :)
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Re: EX5R Battery Replacement Guide

Unread post by EX5_etc » Wed Jan 02, 2019 8:09 am

I took the EX5R out of storage, where it had been for over 4 years, because I wanted to take measurements for a blue display upgrade I had in mind. As soon as I switched it on (with the cover off) the battery replacement message came up. The battery is located under the SCSI reader (the floppy drive was replaced many years ago) and even though I could fit my hand in there I chose to remove the drive instead. Good thing I did because I had forgotten that in order to remove the battery you have to push it back and then pull it up. I would have broken the socket trying to remove the battery with the drive on top of it.

The synth initialized itself after the battery was replaced and with a fresh loading of the GM sound set it performed flawlessly a few of the midi songs I had stored on the dual CF cards.

I eventually took measurements of the LCD but I had to remove a total of 42 screws (those on the cover included) to reach it. I doubt that I can fit a newer blue display in there. The only options I have now are either one with similar dimensions and smaller active area or one with same active area but bigger outer dimensions. Pin compatibility does not appear to be an issue that much as I was able to find blue displays without on board controllers, like those used on the EX5 and EX5R. The blue lady won't let that green display go way, so many years later....

Back in storage she goes tomorrow.

Happy new year everyone.
DrF
Motif XF6, DeepMind 12D, MicroArranger, MicroKorg S, SY99, SY85, QS300, PSR1000, WX5, EX5R, A5000, TG500, TG55, RM50, QY700, QY100, QX5FD, MJC8, EMX2, YDP2006, REV500, EMP700, EQ500U, MCS2, AW16G, Axiom Pro 49, AKAI Pro Advance 49, Arturia KeyLab mkII 61, and a few other things by Behringer, Evolution, Philips, Tascam, Technical Pro, Yamaha, etc, etc,... I wish I had time to use all this stuff; I am not even pro. :-)
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