Linn Axis PCAS011 power supply - diyAudio
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Old 23rd March 2006, 06:58 PM   #1
klinker is offline klinker  United States
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Default Linn Axis PCAS011 power supply

Axis does not turn on. No light on, no smoked parts. The motor in circuit reads 3 K ohms on each leg.
This appears to be an early model S/N 002851.
Any help would be greatly appreciated.

Klinker
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Old 24th March 2006, 10:06 AM   #2
sreten is offline sreten  United Kingdom
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Hi,

you need to check the mains lead fuse.

any fuses either side of the mains transformer.

check with a multimeter there is AC into and out of the mains transformer.

check there is appropriate DC to the circuit boards.

after that circuit details are needed.

/sreten.
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Old 24th March 2006, 05:18 PM   #3
tubenut is offline tubenut  South Africa
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Check the fuse.... No transformer on an axis psu by the way.
Also check the high voltage caps and resistors of 15K (big ones).
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Old 24th March 2006, 09:02 PM   #4
klinker is offline klinker  United States
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Your absolutely right. It's abvious you've seen this before.
Linn was kind enoough to send me the schematic for the board.
It has no values so I calculataed the 15K resistors. Do you know what wattage they are? They look like 3 or 4 watt metal oxide.

Thanks to everyone for the help.

Regards,
Klinker
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Old 25th March 2006, 07:11 AM   #5
tubenut is offline tubenut  South Africa
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Dunno wattage but the 5 Watt Welwyn that I fitted have been 100 % for 6 months or so now.
Does one of them measure high?
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Old 25th March 2006, 07:12 AM   #6
tubenut is offline tubenut  South Africa
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BTW, would love a copy of the CCT.
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Old 25th March 2006, 08:17 AM   #7
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Hi klinker ,

can you please send me the schematic too ?
Thanx in advance

Jürgen
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Old 26th March 2006, 10:42 PM   #8
klinker is offline klinker  United States
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Thanks for the input, I ordered 3W. I couldn't find 5W metal oxide.

Yes, I'll be glad to if I can figure out how!!

Klinker
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Old 27th March 2006, 07:48 AM   #9
tubenut is offline tubenut  South Africa
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Scan and E mail?
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Old 7th April 2006, 12:16 PM   #10
Redart is offline Redart  Australia
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Hi All,

I too have a dead Axis - no turn on the motor and no LEDs illuminated. I can get the motor to spin by applying power direct to the motor terminals, but not through the board.
Has anyone found a solution or can advise what to change out?.
Also can anyone supply a circuit diagram ?

Thanks.
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