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Old 24th October 2007, 09:48 PM   #1
beamish is offline beamish  United Kingdom
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Default Linn Axis Schematic

Hi

looking at previous threads - there seems to be a circuit diagram for the Linn Axis power board around.

Could somone send me a copy - I have a dead Power Supply / Drive board with a completely burnt out R1.

In the first instance I need to confirm the value of R1.

thanks

Beamish
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Old 30th October 2007, 07:11 AM   #2
tkwou is offline tkwou  Canada
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Send me your email and I can post you a schematic.
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Old 30th October 2007, 04:33 PM   #3
beamish is offline beamish  United Kingdom
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Thanks Tkwou - its beamish1@gmail.com
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Old 31st October 2007, 10:53 AM   #4
h_a is offline h_a  Europe
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Honestly, if a power resistor is shot, I guess it's highly unprobable that replacing it will fix your problem. It is more likely that this was only the consequence of a short somewhere else. The short might not be obvious since the high voltages on the board (up to 300V! be cautious!) make the situation worse.

All the best, Hannes
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Old 24th May 2008, 08:13 PM   #5
SPWONG is offline SPWONG  Hong Kong
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Hi,
My Linn Axis does not work now, it truns very slowly. Can someone send me a Linn Axis Schematic to my email wongsp01@yahoo.com ?
Thanks in advance.
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Old 25th May 2008, 02:03 PM   #6
beamish is offline beamish  United Kingdom
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To SPWONG

Check your email
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Old 13th February 2016, 07:25 PM   #7
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Hi beamish
I know this is an old thread! - but did you get the value of R1 and id replacing it fix the PSU?
It seems mine has the same fault though I suspect the caps need replacing too.
thanks
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Old 13th February 2016, 08:00 PM   #8
tkwou is offline tkwou  Canada
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R1 is just a surge guard for the bridge. The exact value is not that important. It usually ranges from 27-47ohm. The newer models have replaced it with a thermistor SG240 to protect the bridge. It basically disappears once the circuit is warmed up so there is no power loss across the resistor.
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Old 13th February 2016, 08:32 PM   #9
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Hi tkwou - thanks for your quick reply. Would that mean the bridge is fried too?
I've have and some hotspots beneath R2 and R3 (15k? )but the only other visible problems are that maybe C1/C2 and definitely C8 are bulging a bit.

My plan was to replace those and mayb e the rest of the electrolytics (with uprated ones) in the first instance
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Old 13th February 2016, 09:53 PM   #10
tkwou is offline tkwou  Canada
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Not necessarily. R1 blows to protect the bridge. It tends to blow pretty easily. But you'll have to check the voltage across the caps once it's powered up. Be careful it should be over 300V DC. The electrolytic caps usually go. It get's pretty on that board. R2 & R3 get really hot but they don't usually don't blow. Just check the resistance to see if they are ok. If they are damaged then there will be no voltage supply to the low power circuits.
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