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Author Topic: Sequel to fuses blowing on the TS-830S  (Read 862 times)
HS0ZFQ
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Posts: 118




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« on: January 10, 2013, 07:16:56 PM »

     Greetings to everybody:
        A couple of weeks ago I posted a message that the fuses were blowing on my TS-830S. What I was unaware of at the time was the fact that the TS-830S was made for Japanese consumption and Japan has a 100volt AC system. I sent my transceiver to a friend to check out. His wall outlet is 230 volts. The step down transformer I was using from the wall to the rig was giving 118 volts. I had been using this transformer for a while. When my friend used his 100 volt transformer ( 230-100) volts the 100 volt transformer gave him 104volts and he has been running it for two days, switching between cw and voice intermittently with no problem.
     I feel chagrined at not giving the Elmers the complete information. And at the moment I am looking for a 220-100 volt step down transformer or power supply.Any further help is highly appreciated.
Yours Truly
Richard
HS0ZFQ
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K8AXW
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Posts: 3900




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« Reply #1 on: January 10, 2013, 08:37:29 PM »

I'm pleased you found the problem.  That's first and foremost!

Can you find a 220 volt Variac (Variable transformer) whereas you can simple dial in the voltage you need? 

Check the manual for the current consumption to determine what size transformer you require.

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W9GB
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Posts: 2626




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« Reply #2 on: January 11, 2013, 08:36:49 AM »

Richard,

The Kenwood TS-830S has a MULTI-TAP transformer primary to support Global AC voltages.
This is covered on PAGE 29, SECTION 6.7 Operation on 220 or 240 VAC of the Instruction Manual.
http://www.n6wk.com/kenwood/TS-830S_Instruction_manual.pdf

IF you CHANGE INPUT VOLTAGE (VAC), THEN the FUSE VALUE (AMPS) MUST CHANGE !!
http://www.sengpielaudio.com/calculator-ohm.htm
P = I * E

Kenwood TS-830S Service Manual
Page 9 covers AC voltage changes
http://www.n2ckh.com/LIBRARY/KENWOOD/TS-830S/TS-830_Service_manual.pdf

Kenwood TS-830S Survival Guide
http://www.n6wk.com/kenwood/TS-830-Survival-Guide.pdf
« Last Edit: January 11, 2013, 08:45:48 AM by W9GB » Logged
KE3WD
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Posts: 5689




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« Reply #3 on: January 11, 2013, 02:49:58 PM »

Some may not have the multi-tapped transformer. 

Depends on country of origin and sale.  For example, one made for sale in Japan may not have the multiple tapped primary, only the 100V winding. 

What it grinds down to is that one should remove the screws and see what they have.


73
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AC5UP
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Posts: 3893




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« Reply #4 on: January 11, 2013, 04:10:17 PM »

Years ago I scored a 'Victor' commercial SVHS tape duplicator built for the domestic market... That's JVC to us and the amusing part was a front panel in English with a back panel ratings tag in Japanese. Not saying that I'm fluent, but the 100 something @ 50-60 something told me it was wired for JA domestic power.

Opened it up to find the transformer primary was soldered to a PC board with a pair of empty jumper holes plainly labeled '120'.

Absolute no-brainer, the primary had three wires for 0 - 100 - 120 volts.
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