Technics SP10MKIII Power Supply

jlsem · 2nd June 2008, 03:33 AM

Is it safe to use a Japanese-market 100V/50Hz power supply on a 120V line? I wouldn't think that a 20% overvoltage would be harmful, would it?

John

Brett · 2nd June 2008, 03:53 AM

I'd probably get a step down. I have the service manual in electronic form here and will send it if you like so you can decide for yourself. There are 3 or 4 different voltages out of the beast, one at about 124V, so there may be some issues.

Maybe EC8010 will chime in as he seems to know a thing or two about them. I sold my last SP10 just recently.

c.d.s. · 2nd June 2008, 06:11 AM

Hello,

Voltage on the western half on honshu also comes in 60 cycles so I wouldn't
worry about frequency, but I wouldn't go over 10% voltage wise.

Considering the MKIII is all about the power supply, I would also suggest you get a step down.

enjoy, it is a great turntable, now back to the old MKII

best regards

Carl

h_a · 2nd June 2008, 07:10 AM

Don't forget that the AC also has a tolerance; the 120V are not written in stone. Indeed if I remember correctly they're allowed to vary by 10% or so.

Get a step up.

No point in putting an expensive turntable at risc.

Have fun, Hannes

jlsem · 2nd June 2008, 01:47 PM

Quote:

I have the service manual in electronic form here and will send it if you like so you can decide for yourself.

Brett,

That would help a good deal and will be greatly appreciated.

Thanks,
John

2nd June 2008, 03:33 AM	#1
jlsem diyAudio Member Join Date: Jun 2003 Location: Dallas,TX	Technics SP10MKIII Power Supply Is it safe to use a Japanese-market 100V/50Hz power supply on a 120V line? I wouldn't think that a 20% overvoltage would be harmful, would it? John

2nd June 2008, 07:10 AM	#4
h_a diyAudio Member Join Date: Sep 2006 Location: Graz, Austria	Don't forget that the AC also has a tolerance; the 120V are not written in stone. Indeed if I remember correctly they're allowed to vary by 10% or so. Get a step up. No point in putting an expensive turntable at risc. Have fun, Hannes __________________ fresh matched IRFP240/IRFP9240 fets \|\| AlephJ/JX-kits F5 transistor kits \|\| Burning Amp BA-1/2/3 transistor kits

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2nd June 2008, 03:53 AM	#2
Brett diyAudio Member Join Date: Jan 2002	I'd probably get a step down. I have the service manual in electronic form here and will send it if you like so you can decide for yourself. There are 3 or 4 different voltages out of the beast, one at about 124V, so there may be some issues. Maybe EC8010 will chime in as he seems to know a thing or two about them. I sold my last SP10 just recently.

2nd June 2008, 06:11 AM	#3
c.d.s. diyAudio Member Join Date: Apr 2003 Location: Los Angeles	Hello, Voltage on the western half on honshu also comes in 60 cycles so I wouldn't worry about frequency, but I wouldn't go over 10% voltage wise. Considering the MKIII is all about the power supply, I would also suggest you get a step down. enjoy, it is a great turntable, now back to the old MKII best regards Carl

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