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Need Replacement Tamura Power Transformer Sun Audio

205.189.255.4

Posted on January 23, 2020 at 06:01:46
mfuller21@gmail.com
Audiophile

Posts: 2
Location: Chattanooga, TN
Joined: January 23, 2020

Hi,
Just joined the forum. I hope I'm posting in the right place. If not, please advise.
I have a Sun Audio SV300-BE. Recently, the power transformer, a Tamura SPT150-A, burnt out. (This is absolutely the problem.) Ideally, I want to replace this transformer with the same Tamura one, but so far I've had no luck in locating one. I've emailed Sun Audio (Japan) several times, but have had no response. Apparently there is no American distributor (?). I've checked the Tamura and Sun Audio websites, but don't see this particular transformer offered. There are other listed, but I have no idea which one might serve as a replacement. Could someone advise me after looking over the specs on which of these would work? I need one that would "bolt" into the location of the current one if possible as I would like to avoid modifications to amp. I definitely want to stay with a Tamura transformer. I've included two links for consultation. Thanks in advance for the help. Peace, Michael

mfuller490

 

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RE: Need Replacement Tamura Power Transformer Sun Audio: 2nd link , posted on January 23, 2020 at 06:09:06
mfuller21@gmail.com
Audiophile

Posts: 2
Location: Chattanooga, TN
Joined: January 23, 2020
Hi,
Sorry to post twice, but I couldn't include a 2nd link to Tamura transformers Here is the 2nd one.
Just joined the forum. I hope I'm posting in the right place. If not, please advise.
I have a Sun Audio SV300-BE. Recently, the power transformer, a Tamura SPT150-A, burnt out. (This is absolutely the problem.) Ideally, I want to replace this transformer with the same Tamura one, but so far I've had no luck in locating one. I've emailed Sun Audio (Japan) several times, but have had no response. Apparently there is no American distributor (?). I've checked the Tamura and Sun Audio websites, but don't see this particular transformer offered. There are other listed, but I have no idea which one might serve as a replacement. Could someone advise me after looking over the specs on which of these would work? I need one that would "bolt" into the location of the current one if possible as I would like to avoid modifications to amp. I definitely want to stay with a Tamura transformer. I've included two links for consultation. Thanks in advance for the help. Peace, Michael
mfuller490

 

RE: Need Replacement Tamura Power Transformer Sun Audio , posted on January 23, 2020 at 07:01:48
Stuben
Audiophile

Posts: 654
Location: Guber Ohio
Joined: December 30, 2005
Contributor
  Since:
May 22, 2009
Hey Mike,

Have you figured out what happened as far as cause? You need to check your coupling caps and any other component that will facilitate a high current draw on failure before you replace the power transformer. This post assumes that you haven't done this exercise.

Stuben

 

RE: Need Replacement Tamura Power Transformer Sun Audio , posted on January 23, 2020 at 07:35:56
Palustris
Audiophile

Posts: 2118
Location: Cape Cod
Joined: September 12, 2008
I had to replace a Tamura SPT150-A transformer about a decade ago. I believe that I bought most of my Japanese transformers from Eifl. I would guess that they know where to acquire items like this even if it is not their usual stock. See the link below.

 

RE: Need Replacement Tamura Power Transformer Sun Audio , posted on January 23, 2020 at 07:36:42
rogerh113
Audiophile

Posts: 302
Location: San Francisco South Bay
Joined: October 20, 2014
One source you might want to try is Yahoo Auctions Japan. Here is a link to HiFi Shark, where you can search on Tamura and then select 'all regions' or 'asia'. They have a lot of Tamura listed, and perhaps the one you are looking for.

https://www.hifishark.com/search?q=tamura

If memory serves, most of the Tamura power transformers are 100v units, and if you are using a 100V transformer here on 120v plus, then you might well have cooked it. A step down transformer, or other voltage reducing method, would be required.

 

RE: Need Replacement Tamura Power Transformer Sun Audio , posted on January 23, 2020 at 12:37:42
Looking at the amplifier schematic, you need a transformer with the following secondaries:

- 290V-0-290V
- 5.0V
- 3x 6.3V

None of the tranformers on the Tamura webpage meet the requirements.

Have you tried asking Tamura?

 

Heyboer could probably wind one for you and you..., posted on January 23, 2020 at 13:43:48
viridian
Audiophile

Posts: 6009
Location: Portland, Oregon
Joined: May 26, 2005
Contributor
  Since:
February 1, 2012
Could probably pot it into the existing can. Good luck.

 

fax them, posted on January 27, 2020 at 13:36:32
bouncy ball
Audiophile

Posts: 1082
Location: British Columbia
Joined: July 26, 2003
I visited Sun Audio office last year. The compnay is a father and son team operation.
Both are super nice and friendly.
may be fax a letter to them, in simple English, it may get their attention. I know they are not very good in responding email.
Good luck.

 

RE: Need Replacement Tamura Power Transformer Sun Audio , posted on February 2, 2020 at 16:07:03
GTCharlie
Audiophile

Posts: 981
Location: Philippines
Joined: December 9, 2004
Just a thought. Japan electronics use 100v in the primary.

If your convenience outlet is NOT 100v, all voltages out of the secondary change, - whether the B+ or the filaments.

 

RE: Need Replacement Tamura Power Transformer Sun Audio , posted on March 22, 2020 at 23:06:43
gwarejp3
Audiophile

Posts: 74
Location: Tokyo
Joined: August 18, 2017
I've been looking out for you in Japan, but so far the only thing that's appeared is at the link;

That's an out-of-production Amp and an out-of-production transformer, Tamura won't stock it and a tour of the Usual Suspects in Akihabara didn't turn up anything ( yet )

Graham

 

RE: Need Replacement Tamura Power Transformer Sun Audio , posted on July 30, 2020 at 23:54:46
Posts: 4
Location: Lancashire
Joined: July 30, 2020
I'm pretty sure Ken uesugi of Otomon labs can help you check his web site
http://soundgate.net/
regards.
sam yeli

 

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