VOGONS


Reply 160 of 238, by yawetaG

User metadata
Rank Oldbie
Rank
Oldbie
voodoo5_6k wrote:
blackmasked wrote:

What's your experience with power supplies for Roland SC and Yamaha MU modules? Have you experienced any failures? I recently purchased a genuine Yamaha PA-130 PSU for my MU80 as I no longer trust the 20 year old PSU that came with it, but it's a bit of a struggle to find a decent replacement PSU for a SC-55. Looks like Roland has not released a newer version of ACB-240 and I don't really trust all these third party compatible PSUs available on ebay.

Oh yes, they did release a replacement unit.

The Roland PSB-230 (or PSB-1U if bundled with a Roland device) can replace, among others, any Roland ACB or ACI PSU (the PSUs bundled with e.g. MT-32, CM-32L, SC-55 and many, many other devices). I use these for all my Roland devices (UM-550, CM-32L, SC-55) for several years now. Shouldn't be too hard to find one, it is a current product.

And if you want noise-free sound output, getting an original Roland-branded power supply apparently is the better choice, as cheap no-name Chinese units are known to cause interference issues on synths...

Reply 161 of 238, by Elia1995

User metadata
Rank Oldbie
Rank
Oldbie

I hope I'll get a Roland SC-55 and/or an MT-32 one day... and the first thing I'll do will certainly be to check the battery, after seeing this thread 😀

Currently assembled vintage computers I own: 11

Most important ones:
A "modded" Olivetti M4 434 S (currently broken).
An Epson El Plus 386DX running MS-DOS 6.22 (currently broken).
Celeron Coppermine 1.10GHz on an M754LMRTP motherboard

Reply 162 of 238, by bjwil1991

User metadata
Rank l33t
Rank
l33t
Elia1995 wrote:

I hope I'll get a Roland SC-55 and/or an MT-32 one day... and the first thing I'll do will certainly be to check the battery, after seeing this thread 😀

The MT-32 doesn't use a battery unless it's the 2nd version (headphone jack), or not at all, I believe. The SC-55 and higher use them to keep the soundbank data (if my memory serves me right).

Discord: https://discord.gg/U5dJw7x
Systems from C64 to FX-6300.

Reply 163 of 238, by static-

User metadata
Rank Newbie
Rank
Newbie

Just opened my SC-55mkII (bought 7 years ago for $140) and battery was in perfect shape. I removed it anyway.

PS. holy crap Tyrian sounds amazing on an SC-55. Run the setup.exe to access the Jukebox.

Reply 164 of 238, by Elia1995

User metadata
Rank Oldbie
Rank
Oldbie

What is that battery for anyway? I think SC-55 and MT-32 use electrical plugs, but not owning either YET, I can't really point my fingers at that, as they could also use batteries, as much as I know...

Currently assembled vintage computers I own: 11

Most important ones:
A "modded" Olivetti M4 434 S (currently broken).
An Epson El Plus 386DX running MS-DOS 6.22 (currently broken).
Celeron Coppermine 1.10GHz on an M754LMRTP motherboard

Reply 166 of 238, by keropi

User metadata
Rank l33t++
Rank
l33t++

No mt-32 revisions use batteries or store settings after power-off , there are mods to add a battery though in order to keep settings and that's the reason SC-55 does have a battery: to keep settings/setup according to the artist's setup/wishes. Unless there is a very specific setup issue a common user like a gamer can remove the battery all together and the unit will startup with the default settings every time, something that is actually desirable for gaming reasons.

🎵Link to buy a PCMIDI mpu
🎧Orpheus soundcard project
💻WTB Amstrad PC7486SLC-33 system

Reply 167 of 238, by fitzpatr

User metadata
Rank Member
Rank
Member

Well, as expected the SC-88Pro also had a battery. I needed to remove the screws holding the main, upper board before I could access the battery to remove it.

I should add that the battery was showing very early signs of corrosion. No issue now, but as always, it is better to take the precaution.

Attachments

  • 20171205_165255.jpg
    Filename
    20171205_165255.jpg
    File size
    3.81 MiB
    Views
    2315 views
    File comment
    Roland SC-88Pro Main Board
    File license
    Fair use/fair dealing exception
  • 20171205_165236.jpg
    Filename
    20171205_165236.jpg
    File size
    4.76 MiB
    Views
    2315 views
    File comment
    Roland SC-88Pro internals.
    File license
    Fair use/fair dealing exception

MT-32 Old, CM-32L, CM-500, SC-55mkII, SC-88Pro, SC-D70, MU2000EX
K6-III+/450/GA-5AX/G400 Max/Voodoo2 SLI/CT1750/MPU-401AT/Audigy 2ZS
486 Build

Reply 168 of 238, by cheesemaun

User metadata
Rank Newbie
Rank
Newbie

--------------------------------------------------------------------------------------------------------------------------------------------------

Last edited by cheesemaun on 2018-12-21, 00:38. Edited 1 time in total.

Reply 169 of 238, by derSammler

User metadata
Rank l33t
Rank
l33t

Just had another SB-55 with severe damage due to leaking caps on the interface board. This makes a rate of 100% so far (two checked, two damaged). In both cases, traces were completely gone. Fortunately, it's easy to fix. But still, check your SB-55 if you got one!

Reply 171 of 238, by SpeedySPCFan

User metadata
Rank Member
Rank
Member

I know this thread is about the SC-55, but this is about another SC so I guess it fits here. How exactly are you supposed to take the battery out of an SC-88 Pro? I feel like I'm gonna snap the plastic off the battery holder every time I pull on the battery and try to pry it out upwards. If I can't get it out then it's not the biggest deal; I couldn't find any signs of corrosion on it (the top, battery holder, and area around the holder were completely clean, and nothing came off the bottom of the battery when I pressed it with a pair of tweezers), but I'd like to replace it just to be safe if I can.

Musician & music gear/game reviewer.

MIDI hardware: JD-990, SC-55, SC-880, SD-90, VL70-m, Motif ES, Trinity, TS-10, Proteus 2000, XK-6, E6400U

Reply 172 of 238, by fitzpatr

User metadata
Rank Member
Rank
Member
SpeedySPCFan wrote:

I know this thread is about the SC-55, but this is about another SC so I guess it fits here. How exactly are you supposed to take the battery out of an SC-88 Pro? I feel like I'm gonna snap the plastic off the battery holder every time I pull on the battery and try to pry it out upwards. If I can't get it out then it's not the biggest deal; I couldn't find any signs of corrosion on it (the top, battery holder, and area around the holder were completely clean, and nothing came off the bottom of the battery when I pressed it with a pair of tweezers), but I'd like to replace it just to be safe if I can.

I used two thin blades: one to pry up the front, and the other to push from behind. Be gentle and it will be fine.

MT-32 Old, CM-32L, CM-500, SC-55mkII, SC-88Pro, SC-D70, MU2000EX
K6-III+/450/GA-5AX/G400 Max/Voodoo2 SLI/CT1750/MPU-401AT/Audigy 2ZS
486 Build

Reply 173 of 238, by SpeedySPCFan

User metadata
Rank Member
Rank
Member

I didn't do exactly that but I got it to work, thanks! I propped the battery up with my finger, and then wiggled it back-side to back-side with a super tiny screw driver. Eventually it slid right out, and I was able to replace it with a new battery. The old one was just barely starting to leak, so I'm glad I did that. Ironically though the new battery I put in (which is an Energizer I've had laying around for years) has LESS battery than the old one so I'll have to get a replacement for that tomorrow. It's not all bad though, because I needed to record some footage of me replacing the battery for a review 😀

Musician & music gear/game reviewer.

MIDI hardware: JD-990, SC-55, SC-880, SD-90, VL70-m, Motif ES, Trinity, TS-10, Proteus 2000, XK-6, E6400U

Reply 174 of 238, by CrossBow777

User metadata
Rank Member
Rank
Member

If this was already mentioned I apologize, but do these SC modules use a rechargeable type coin cell battery in them? I have an MT-200 and the battery is a tabbed soldered in type. Was thinking about yanking it out of there and putting a holder in place and a fresh battery, but if they are rechargeable then I would need to make sure I got a rechargeable cell.

Also, there is a date and time clock on the MT-200 that you can see via the "hidden" diag menu. But doesn't appear there is a way to set that as the alpha knob and buttons do nothing on that particular section?

Nothing in the hidden menu is mentioned in either of the two standard MT-200 manuals and I've not seen an actual service manual for one (Which, would probably answer all of my questions.).

g883j7-2.png
Midi Modules: MT-32 (OLD), MT-200, MT-90, SD-20

Reply 176 of 238, by ab0tj

User metadata
Rank Member
Rank
Member

I opened up mine today and the battery had definitely been leaking. Luckily none of it made it to the board, but it was not a pretty sight anyway. I just removed it.

Reply 177 of 238, by derSammler

User metadata
Rank l33t
Rank
l33t

Removed the battery from my SC-88 Pro yesterday. It had signs of leakage, too. No damage, however, as the leakage only sticked on the coin cell itself. The SC-88 Pro works fine without the battery, just as the SC-55, but you lose some features like MIDI IN B or second audio out, which are both off by default and won't stay on with the battery removed.

Reply 178 of 238, by bjwil1991

User metadata
Rank l33t
Rank
l33t

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

Discord: https://discord.gg/U5dJw7x
Systems from C64 to FX-6300.