HELP!!!, KRELL KSA-100S Service Manual wanted!!!! - diyAudio
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Old 14th August 2007, 07:26 AM   #1
fepablo is offline fepablo  Argentina
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Default HELP!!!, KRELL KSA-100S Service Manual wanted!!!!

Hi, i from Argentina. I need the service manual of Krell KSA-100S power amplifier. Please, if somebody have this, send to my email federicopablorodriguez@gmail.com

Thanks You.

Federico Rodriguez
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Old 16th February 2011, 07:49 PM   #2
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I found the KSA-100 stuff here.
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Old 14th July 2011, 03:46 PM   #3
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Location: Madrid
Default Hello

Quote:
Originally Posted by greenspan View Post
I found the KSA-100 stuff here.
Hi, I need other schematic: the Krell KSA300S schematic or manual service for repair one device. 12 volts pulses at right channel output during one minute. After that time the unit work very good.
Thanks.
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Old 15th July 2011, 09:22 AM   #4
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Josemria
I too are trying to fix a KSA-300S, without any schematic.
The amp has suffered from bad capacitors, and as described from the owner, it just went dead, and released a little smoke from the back of the right hand amp.
Investigation showed that a leaking capacitor C24 had shorted to a track leading to Anode of D12.
Actually, electrolytic fluid had contaminated the surroundings of all the 4 caps C 21-24
After recaping, and completely cleaned the entire unit, it will now engage the mains relay, take in a lot of power, as the main caps charges, and then it only cliks a few times from the small relays (i think on the driver boards) and then goes dead.
I checked all the components around to be ok.
I would much appreciate to share experiance with you on this beast of an amplifier, and if you shoud succeed in getting the schematic, pls. let me kknow, and i will as well share with you, if a find a copy.
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Old 20th July 2011, 10:11 PM   #5
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Josemria
I do not know how far you got with the KSA-300S. but i seruosly think you have the same leakin cap. problem as i have, recap the unit, and make sure that you clean ALL the residual electrolytic fluid that have escaped the capacitors, an i will expect you amp. to be fine again.
I located the error in my unit to be the twin FET transistor in the differential stage, at the input, i has an open drain in the feedback side (designation Q33), it has suffered from the conducting electrolytic fluid liying around on the pcb.
I have ordered one from littlediode, and expect it to arrive from US within next week, i will post the result here when i replaced it.
Did you ever find the schematic? (i spend quite some time reverse engineering this rather complex amp.)
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Old 4th August 2011, 11:21 AM   #6
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Location: Fairport Beach (in Pickering), Ontario
We should start a list of schematics required! . I'm looking for:

KMA 100 mk2
KSA 200S

Thanks.
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Old 9th October 2011, 12:42 PM   #7
maikl 5 is offline maikl 5  Russian Federation
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I need the service manual of Krell KSA-100S power amplifier. Please, if somebody have this, send to my email xcargo@mail.ru
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