Elekit TU-870 help

chrish · 9th July 2007, 08:32 AM

A work colleague on another online forum has purchased a tube amp kit in Japan an Elekit TU-870 http://www.elekit.co.jp/material/eng...p?page=1&ssi=1

The trouble is, the instructions are in Japanese and it is set up for mains power of 100 volts. Like me, this person lives in Australia, so speaks English and we have 240 volts mains power.

The plea for help was on my work chat site, so I do not know exactly what electronics experience this colleague has, but I have said that I would try to offer him some assistance. He has not posted a schematic, so if someone has one, that would be a great start. As the kit is very cheap (about $160 US) I am assuming it won't have a multi-tap power transformer, so some power supply rework will probably be required.

If anybody has any information on this kit amplifier such as a schematic or a link to a site that describes the build would be a great help.

Thanks,

Chris

Tom Bavis · 9th July 2007, 12:53 PM

Why not ask the manufacturer if they have (1) English instructions, (2) 240V transformer.

Unless you can find a surplus 240:100V step-down transformer, replacing the transformer would be best.

chrish · 10th July 2007, 12:46 AM

Yes, that is the obvious thing that we have said to him. He has asked the manufacturer, and the kit is only for the Japanese market so no English (or Jinglish) instructions from them. They wondered how the kit ended up in Australia. I also suggested that since I happen to have a 240-100 volt step down transformer at home he could just give the kit to me!

Thanks again, any further assistance welcome

Chris

vkung · 7th June 2008, 08:06 PM

TU-879S is far better than TU-870R. Here is the preview from 6moons.
http://www.sixmoons.com/audioreviews...lue/jb3_5.html
If you are interested 120V or 220V R-core trnsfomer, please let me know.
It is around $65.00 custom made.

VK

kevinkr · 7th June 2008, 10:19 PM

There must be relatively inexpensive 240V:100V stepdown or auto transformers available in OZ if you look around - this would be the quickest, easiest and probably least expensive approach..

The kit looks like fun, other posted comments not withstanding. Something good to learn on at least which I think was the point here.

chrish · 10th June 2008, 03:20 AM

Thanks for the reply. I offred some help to this guy about a year ago, but I think he lost interest or got a mains transformer as I did nothear back from him.

Cheers,

Chris

9th July 2007, 08:32 AM	#1
chrish diyAudio Member Join Date: Oct 2003 Location: Sydney	Elekit TU-870 help A work colleague on another online forum has purchased a tube amp kit in Japan an Elekit TU-870 http://www.elekit.co.jp/material/eng...p?page=1&ssi=1 The trouble is, the instructions are in Japanese and it is set up for mains power of 100 volts. Like me, this person lives in Australia, so speaks English and we have 240 volts mains power. The plea for help was on my work chat site, so I do not know exactly what electronics experience this colleague has, but I have said that I would try to offer him some assistance. He has not posted a schematic, so if someone has one, that would be a great start. As the kit is very cheap (about $160 US) I am assuming it won't have a multi-tap power transformer, so some power supply rework will probably be required. If anybody has any information on this kit amplifier such as a schematic or a link to a site that describes the build would be a great help. Thanks, Chris

7th June 2008, 10:19 PM	#5
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	There must be relatively inexpensive 240V:100V stepdown or auto transformers available in OZ if you look around - this would be the quickest, easiest and probably least expensive approach.. The kit looks like fun, other posted comments not withstanding. Something good to learn on at least which I think was the point here. __________________ "Extraordinary claims require extraordinary evidence." - Carl Sagan

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9th July 2007, 12:53 PM	#2
Tom Bavis diyAudio Member Join Date: Jun 2002 Location: Macedon NY	Why not ask the manufacturer if they have (1) English instructions, (2) 240V transformer. Unless you can find a surplus 240:100V step-down transformer, replacing the transformer would be best.

10th July 2007, 12:46 AM	#3
chrish diyAudio Member Join Date: Oct 2003 Location: Sydney	Yes, that is the obvious thing that we have said to him. He has asked the manufacturer, and the kit is only for the Japanese market so no English (or Jinglish) instructions from them. They wondered how the kit ended up in Australia. I also suggested that since I happen to have a 240-100 volt step down transformer at home he could just give the kit to me! Thanks again, any further assistance welcome Chris

7th June 2008, 08:06 PM	#4
vkung diyAudio Member Join Date: May 2005 Location: Vancouver BC Canada	TU-879S is far better than TU-870R. Here is the preview from 6moons. http://www.sixmoons.com/audioreviews...lue/jb3_5.html If you are interested 120V or 220V R-core trnsfomer, please let me know. It is around $65.00 custom made. VK

10th June 2008, 03:20 AM	#6
chrish diyAudio Member Join Date: Oct 2003 Location: Sydney	Thanks for the reply. I offred some help to this guy about a year ago, but I think he lost interest or got a mains transformer as I did nothear back from him. Cheers, Chris