Have you opened your SC-55 to check the battery inside?

Discussion about old sound cards, MIDI devices and sound related accessories.

Re: Have you opened your SC-55 to check the battery inside?

Postby SpeedySPCFan » 2018-3-19 @ 04:28

bjwil1991 wrote:The battery was primarily used for musicians, right? Without the battery, that should be OK for PCs (games), if my memory serves me right.

I had my SC-88 Pro without a battery for a few days since I didn't have any replacements on hand. As a musician, it's really nice to have it in since it saves things like the MIDI OUT/MIDI THRU toggle, instrument patches, etc. But for games it saves absolutely nothing of importance and you can keep it removed.
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Re: Have you opened your SC-55 to check the battery inside?

Postby Trelokk » 2018-4-03 @ 13:29

Thanks for this useful hint! I removed the battery yesterday and hopefully saved my unit from a premature end this way. Also good to know that the battery is not needed if you are just using it for games. Won't insert it again, then!
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Re: Have you opened your SC-55 to check the battery inside?

Postby cricket » 2018-4-10 @ 18:55

Thanks for the useful information.
I'll check my SC55 as well.
The original photo is not shown anymore, what kind of battery is in there?
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Re: Have you opened your SC-55 to check the battery inside?

Postby keropi » 2018-4-10 @ 19:11

CR2032 IIRC
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Re: Have you opened your SC-55 to check the battery inside?

Postby aquishix » 2018-4-22 @ 14:04

SpeedySPCFan wrote:I had my SC-88 Pro without a battery for a few days since I didn't have any replacements on hand. As a musician, it's really nice to have it in since it saves things like the MIDI OUT/MIDI THRU toggle, instrument patches, etc. But for games it saves absolutely nothing of importance and you can keep it removed.


Good to know that about that toggle on the SC-88. I'm only using this Roland equipment for DOS gaming, but I have an SC-88, SC-55, and MT-32 daisy chained in sequence so that I can use both MIDI inputs on the SC-88 and have the signals cascade to the other modules without having to implement messy switches or fuss with changing cables all the time.
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Re: Have you opened your SC-55 to check the battery inside?

Postby twilliamc » 2018-7-11 @ 19:44

I am glad this topic is high up. Should be stickied. I saved my SC-155 from death thanks to this thread.

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Re: Have you opened your SC-55 to check the battery inside?

Postby Rasna » 2018-8-23 @ 12:47

The batteries in my SC-55, SC-55MK2 and SC-88 Pro had definitely been leaking, no damage to the board and no leaking residue on the blade in the battery holder............
My MIDI modules: Roland MT-32 (old), CM-32L, SC-55, SC-55MK2, SC-88 Pro
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Re: Have you opened your SC-55 to check the battery inside?

Postby Rasna » 2018-8-23 @ 12:55

keropi wrote:yep both mt-32 and cm-32L that I have opened do use a 7805 regulator since they are 5v devices :)


I've already replaced them with cooler TSR 1-2450 :happy:
My MIDI modules: Roland MT-32 (old), CM-32L, SC-55, SC-55MK2, SC-88 Pro
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Re: Have you opened your SC-55 to check the battery inside?

Postby CrossBow777 » 2018-8-23 @ 16:38

Rasna wrote:
keropi wrote:yep both mt-32 and cm-32L that I have opened do use a 7805 regulator since they are 5v devices :)


I've already replaced them with cooler TSR 1-2450 :happy:


Does that cause any added noise on the line level outputs that you've heard? I also use these same DC-DC converters in most of my classic gaming consoles. However, when I installed them into the Sega Genesis, I had odd beeps and static that could be heard that was never present before. I also had odd issues with Sonic 3 locking up randomly with them in place. I ended up replacing them back out and putting in higher 2amp versions of the standard 7805 VRs. But that is the only console I've done that with and had issues.

So yeah I'm curious as I have some still on hand and wouldn't mind trying them in my MT-32 or MT-200.
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Re: Have you opened your SC-55 to check the battery inside?

Postby Rasna » 2018-8-24 @ 13:20

I didn't notice any extra noise
My MIDI modules: Roland MT-32 (old), CM-32L, SC-55, SC-55MK2, SC-88 Pro
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Re: Have you opened your SC-55 to check the battery inside?

Postby SpeedySPCFan » 2018-10-02 @ 16:37

keropi wrote:CR2032 IIRC


I got my SC-55 a few days ago, this is correct - it's a CR2032 battery. Mine was a Toshiba brand specifically - not like it matters, my 88Pro and 55 are now running Energizer batteries so they Keep Going and Going™ :lol:
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Re: Have you opened your SC-55 to check the battery inside?

Postby Salient » 2018-10-28 @ 16:08

Replaced mine finally as well in both my SC-55's.

They were indeed in poor condition by now, but haven't damaged anything (unlike the Varta stuff in a lot of Amiga's):
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Re: Have you opened your SC-55 to check the battery inside?

Postby Baoran » 2018-11-02 @ 02:29

I found my first SC-55 for about 40 euros locally about a week ago and I have not checked the battery.
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Re: Have you opened your SC-55 to check the battery inside?

Postby MusicallyInspired » 2018-12-06 @ 01:37

Does anyone know if I would have to worry about this with a CM-500 or MT-200? No, eh? There's no memory features on the CM-500 at all IIRC, and the MT-200 saves everything to floppy disks...again, IIRC.
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Re: Have you opened your SC-55 to check the battery inside?

Postby CrossBow777 » 2018-12-06 @ 08:32

MT-200 has a larger tabbed coin battery in it and it is used near as I can tell to save the RTC information in the sequencer. But I would imagine it could go bad and leak like anything else. I took them out of both of the MT-200s I have and installed standard 2032 coin cell holders and put new maxell 2032 batteries in each.
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Re: Have you opened your SC-55 to check the battery inside?

Postby MusicallyInspired » 2018-12-06 @ 13:46

Thanks. I'll have to do that.
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