RCF AS6001 amplifier schematics needed
Printed From: Speakerplans.com
Category: General
Forum Name: Amp Forum
Forum Description: The 'Stopping Jake Fielder moaning constantly' forum description...
URL: https://forum.speakerplans.com/forum_posts.asp?TID=97917
Printed Date: 19 April 2024 at 3:07am
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com
Topic: RCF AS6001 amplifier schematics needed
Posted By: DjLeco
Subject: RCF AS6001 amplifier schematics needed
Date Posted: 26 February 2017 at 9:04pm
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Hi my friends! I will have next week one RCF AS 6001 amplifier to repair, I please asking to anyone for shematics/service manual for this amplifier. To me looks like one Class H 2 step configuration amplifier, at "first seen". Someone tried to "fix it" using fake output MJ devices and fails in first minutes...  Thanks in advance, regards, Claudiu! https://postimg.org/image/hvvwhbf7z/" rel="nofollow">  https://postimg.org/image/xvek0vb9r/" rel="nofollow">  https://postimg.org/image/l5abns3bj/" rel="nofollow">  https://postimg.org/image/ip8i9xl8v/" rel="nofollow">  https://postimg.org/image/df3jin0zz/" rel="nofollow">  https://postimg.org/image/dt4vi8l3j/" rel="nofollow">  https://postimg.org/image/fmcdkavnz/" rel="nofollow">  https://postimg.org/image/qzywvi66n/" rel="nofollow">  https://postimg.org/image/ukuseqaq7/" rel="nofollow">  ------------- I'm A Stupid SMART Romanian... |
Replies:
Posted By: M4trix
Date Posted: 26 February 2017 at 9:41pm
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Here: http://www.dropbox.com/s/ujjuwcs4bv42360/schema%20ampli%20as%206001.pdf" rel="nofollow - http://www.dropbox.com/s/ujjuwcs4bv42360/schema%20ampli%20as%206001.pdf Looks like it's actually Yorkville AP3000 series. http://www.dropbox.com/s/jpvlyt0iloi1twj/yorkville_audiopro-ap3000_sm.pdf" rel="nofollow - http://www.dropbox.com/s/jpvlyt0iloi1twj/yorkville_audiopro-ap3000_sm.pdf |
Posted By: DjLeco
Date Posted: 26 February 2017 at 11:00pm
Thank you very, very much! 
Seeing schematics, it looks most like a classG amplifier.
------------- I'm A Stupid SMART Romanian... |
Posted By: M4trix
Date Posted: 26 February 2017 at 11:23pm
No problem.  Edit: When you have time, open one of those weird marked MJ15022/23. Let's see the sucker inside. |
Posted By: DjLeco
Date Posted: 28 February 2017 at 8:02am
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I wait first to arrive. Me too, I'm curous too about the surface of silicon inside those m-FAKE-rs...
------------- I'm A Stupid SMART Romanian... |
Posted By: kedwardsleisure
Date Posted: 28 February 2017 at 11:36am
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Look like these. This lot were supplied by CPC in the UK. Good amps those Yorkvilles.  ------------- Kevin North Staffordshire |
Posted By: DjLeco
Date Posted: 28 February 2017 at 6:57pm
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Yes, those are very poor clones... ------------- I'm A Stupid SMART Romanian... |
Posted By: M4trix
Date Posted: 28 February 2017 at 11:10pm
I have never seen such logo. Perhaps made in India ? @Kevin, since when do you have them ? Looks like an old batch. 
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Posted By: kedwardsleisure
Date Posted: 01 March 2017 at 1:09pm
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A few years. A customer sent an amp in for repair and told me "don't get any transistors for it, I will send some' and he sent those (in CPC packets). Which is why I fitted ON Semi transistors and kept a couple of those as a souvenir. ------------- Kevin North Staffordshire |
Posted By: M4trix
Date Posted: 03 March 2017 at 6:51pm
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@Kevin, well, for the sake of science, you could keep one as a souvenir, the other one for the autopsy ! 
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Posted By: DjLeco
Date Posted: 05 March 2017 at 10:04pm
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The amp has arrived, I will open fake trannies to see and compare with originals. ------------- I'm A Stupid SMART Romanian... |
Posted By: M4trix
Date Posted: 13 March 2017 at 12:07am
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Guys !? http://www.youtube.com/watch?v=vifwar7jxcQ" rel="nofollow - http://www.youtube.com/watch?v=vifwar7jxcQ  
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Posted By: kedwardsleisure
Date Posted: 13 March 2017 at 8:11pm
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its called work! ------------- Kevin North Staffordshire |
Posted By: DjLeco
Date Posted: 10 April 2017 at 12:47pm
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Fixed today, thanks for schematic, my friends!
CLONES low cost half output trannies!
Replaced all BC-trannies on both output modules, 4 MJE 340-350 and 2 NE5532, recalibrated bias, all like new! For those ones who will fix this kind of amplifiers in the future, if channel stays in protection mode even ALL components are OK, go on basic control motherboard, and replace 150kOhm resistors R60A and R60B with 82-100kOhm resistors at 3 watts. https://postimg.org/image/s8zquote7/" rel="nofollow">  It took me 2 days to realize as the prepolarisation current for constant curent generators BF87x was too low (too big value resistor, 150K ) to activate leds, as constant voltage source...
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https://postimg.org/image/9e4049tcf/" rel="nofollow">
https://postimg.org/image/krqjfh3v3/" rel="nofollow"> What's inside a clone, compairing to the originals ON Semi... Bull$**t. https://postimg.org/image/c6lqv5ytr/" rel="nofollow">
[video] https://www.youtube.com/watch?v=Q4CerRqF-XI&feature=youtu.be" rel="nofollow - |
Posted By: M4trix
Date Posted: 11 April 2017 at 7:56pm
Well done @Leco ! As for the transistors, I'm not surprised at all. Fake is written all over them. The logo still boggles me. Never seen it before and I doubt it's from China.  |