Linn Axis PSU overhaul

Zoodle · 13th February 2011, 09:43 PM

Hi,

I have a working but tired Axis PSU (011 Rev3).
I'm about to replace:
2x 47microF 250v
2x 220mF 16v
2x 33mF 350v
6 x22mF 50v

I intend using larger voltage versions.
The parts aren't temperature labelled; do you think it's worth having higher temp rated?

Other parts:
Is there an advantage replacing any of the following:

* R1, 47ohms +/- 5% [Someone mentioned putting in 2 varistors(?) but that sounds like changing the board layout, which is above my confidence level]
* Bridge rectifier.
* Two physically large resistors printed "273-0, 15k, 5%" ?

I don't know the wattage ratings for any of these.

Have I missed anything? I'm not an electronics whiz, but I'm good with a soldering iron. I know the board is dangerous and easily damaged.

Mooly · 14th February 2011, 06:21 PM

It would help to see a circuit tbh

Always worth getting 105C rated caps if possible if it's hot running. Even if actual temperatures are below this the higher rated parts last far longer.
Make sure any replacements fit physically as there is nothing worse than seeing parts with bent leads trying to make them fit.

Zoodle · 15th February 2011, 05:19 AM

Thanks Mooly,
I'll get 105 rated.

13th February 2011, 09:43 PM	#1
Zoodle diyAudio Member Join Date: Jun 2009	Linn Axis PSU overhaul Hi, I have a working but tired Axis PSU (011 Rev3). I'm about to replace: 2x 47microF 250v 2x 220mF 16v 2x 33mF 350v 6 x22mF 50v I intend using larger voltage versions. The parts aren't temperature labelled; do you think it's worth having higher temp rated? Other parts: Is there an advantage replacing any of the following: * R1, 47ohms +/- 5% [Someone mentioned putting in 2 varistors(?) but that sounds like changing the board layout, which is above my confidence level] * Bridge rectifier. * Two physically large resistors printed "273-0, 15k, 5%" ? I don't know the wattage ratings for any of these. Have I missed anything? I'm not an electronics whiz, but I'm good with a soldering iron. I know the board is dangerous and easily damaged.

14th February 2011, 06:21 PM	#2
Mooly diyAudio Member Join Date: Sep 2007	It would help to see a circuit tbh Always worth getting 105C rated caps if possible if it's hot running. Even if actual temperatures are below this the higher rated parts last far longer. Make sure any replacements fit physically as there is nothing worse than seeing parts with bent leads trying to make them fit. __________________ ------------------------------------------------------- *A simulation free zone.* *Design it, build it, test it.*

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Linn Axis psu almost fixed (i think!)	martiny	Analogue Source	0	4th March 2009 03:14 PM
R2 and R3 values on Linn Axis PSU	martiny	Analogue Source	3	4th March 2009 10:46 AM
Linn Axis PSU smoking	martiny	Analogue Source	0	1st March 2009 12:06 AM
Linn Axis Schematic	beamish	Analogue Source	5	25th May 2008 02:03 PM
My Linn Axis is Sick. Please help fix	bubbamc119	Analogue Source	53	26th January 2008 12:08 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

15th February 2011, 05:19 AM	#3
Zoodle diyAudio Member Join Date: Jun 2009	Thanks Mooly, I'll get 105 rated.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)