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Old 21st March 2009, 02:00 PM   #41
h_a is offline h_a  Europe
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Hi Roger,

thanks for clearing that one up! So in fact you would like a schematic

A parts list is to my understanding just a list connecting names with parts, like Q1=BC550C and so on.

Have fun, Hannes

PS: congrats that you read colour codes like a book! I didn't bother with that and use now only Dale resistors that have their value written upon them
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Old 28th March 2009, 10:21 PM   #42
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Default LK1 Re-cap!

Everyone,
I had to guess a bit about the size of a cooked R61 resistor, but it was no mystery to change ALL of the elctrolytic capacitors. I made this decision because of the two swollen caps, plus the loud rushiong noise from the MC channel. This involved replacing all 6 of the 322mf, 50v capacitors and it made it quiet. With the high failure rate, I decided to cahnge them all. Good move because the 22mf caps measured from300PF to 26MF. Only the 26mf unit was very close to the posted value. Most were less than 10mf! I used vertical mount 10,000mf, 25v capacitors for the main power supply filters. See pix for the location. It works fine now.
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Old 13th January 2011, 07:39 AM   #43
laochy is offline laochy  Germany
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@ ticktock

Please send me the parts list of LK2. I am trying to do recap for my LK2 because the two channels are not balanced now. Thank you very much!

E-mail: laochy@hotmail.com
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Old 13th January 2011, 11:12 AM   #44
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Please note, that it is necessary to mounting the regulator devices ( presently mounted on heatsink) on the bottom of the aluminium envelope (aluminium case) to use this case for the heatsink function. Now the life expectancy of the caps near by the old heatsinks is higher because now don't burn longer. Stuff for electric isolated mounting is additional necessary.
Various compensating caps you must solder directly on the leads of the regulators (LM317 and two BjT's in TO-126/SOT32 outline - as I know). now the length of the additional wiring (at whole 9 leads) are not longer a problem.
Use in all cases 63V versions. 1000uF/63V for the main caps behind the rectifier e. g. is a much more better choice than 4700uF/25V.
High Capacitance values are nonsense in general, if capacitor is connected in front of the voltage regulator instead behind.

Last edited by tiefbassuebertr; 13th January 2011 at 11:20 AM.
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Old 13th September 2012, 11:37 AM   #45
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Default Help needed please dead LK2

I have an LK2 that has dropped a channel, I assume that I need to replace some of the caps, I am after a schematic just to get a better understanding if anyone can help please?
As this is an old amp now and I am new to trying to repairing amps any advice to what I should replace whilst I have the unit open would be great.
Regards, Dean.
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Old 13th September 2012, 12:24 PM   #46
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Quote:
Originally Posted by Jan Dupont View Post
Quote:
Originally Posted by kepa1 View Post
Hello,

Here is the schematic for the Lk280 amplifier. I wonder what component upgrade would be worth it. The 6 x 100F capacitors?

Tomorrow I'll write more about my issues with this amp after the PS caps upgrade.
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Old 13th September 2012, 10:21 PM   #47
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It would seem the link to the schematic no longer works, any help please?
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Old 15th September 2012, 09:32 AM   #48
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You need to go through a security check before navigating to the file. Simply go first to Audio Circuit Denmark
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Old 15th September 2012, 09:40 AM   #49
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Quote:
Originally Posted by deanboy1972 View Post
It would seem the link to the schematic no longer works, any help please?
check out the first PDF link by post #1 about
Question arround the Power Supply of Linn's Preamp LK-1
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Old 15th September 2012, 10:38 AM   #50
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Thank's that should get me going again!
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