RCF AS6001 amplifier schematics needed |
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kedwardsleisure
Old Croc Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4949 |
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its called work!
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Kevin
North Staffordshire |
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DjLeco
Young Croc Joined: 21 April 2009 Location: Bucharest Status: Offline Points: 817 |
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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. 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...
What's inside a clone, compairing to the originals ON Semi... Bull$**t.
[video]https://www.youtube.com/watch?v=Q4CerRqF-XI&feature=youtu.be[/video] Edited by DjLeco - 10 April 2017 at 4:18pm |
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I'm A Stupid SMART Romanian...
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M4trix
Registered User Joined: 23 June 2009 Location: Croatia Status: Offline Points: 445 |
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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.
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