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Old 2nd October 2003, 07:34 AM   #1
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Default ONIX OA22 schematic needed

I promissed one of my friends to fix his ONIX OA22 integrated amplifier. I'm searching for the schematic because the amp had been disassembled by a guy, who didn't know what he was doing
I hope someone can help
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Old 5th October 2003, 09:55 AM   #2
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Hello Jan
what do you need to know? usually the only problem would be the output stange has blown. The output transistors are BD911/ 912. The 0R22 emitter resistors would also go open circuit. The drivers don't usually go but are ZTX 653 and 753, the other transistor on the heatsink is a BC239c. Sorry, I don't have the circuit in a postable form

Tony
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Old 5th October 2003, 06:04 PM   #3
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Hi Tony,
Thanks for your reply
You have told be what I need to know.
The reason for my thread was, that some guy without much understanding in electronics had tried to "repair" the output stage.... Ending out with four different output transistors and four different emitters from 0.1 to 4.7 Ohms
I think 0.33 is the correct value
Thanks
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Old 6th October 2003, 01:47 AM   #4
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Hi Jan
emitter resistors are 0R22... set bias current to 40mA after 15 minutes
cheers
Tony
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Old 6th October 2003, 03:15 PM   #5
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Thanks Tony,
Just a to go "down on the corner" to get those BD's ;-)
I post the result here
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Old 2nd February 2005, 10:11 AM   #6
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hello,everybody:
I need ONIX OA22 schematics,if someone have,please post me or send me a EMAIL.
thank you!
regards!
WINCO
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Old 3rd February 2005, 09:18 AM   #7
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requesting the schematics once more!
waitting for your help...

regards!
WINCO
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Old 4th February 2005, 11:11 AM   #8
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Hi DarkHorse,
I never got it, however made a perfect repair anyway.....
Do you have a specific problem ???
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Old 4th February 2005, 11:38 AM   #9
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Quote:
Originally posted by ACD
Hi DarkHorse,
I never got it, however made a perfect repair anyway.....
Do you have a specific problem ???
Hi,ACD:
thank you for reply,I just want the circuit schematics for research!
I have more interesting in it's topology...once I have see it's outlook,very nice!

regards!
WINCO
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Old 4th February 2005, 11:47 AM   #10
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Frankly....
I found nothing special when repairing this
Sold for their looks, not for their the inside
Mostly cheep components, lots and lots of no name caps and second choice solutions for it to be squezed in size to fit a nice
cabinet
Sorry all ONIX fans
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