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Post by kopraish on Mar 13, 2019 12:10:00 GMT -5
This amp is absolutly shit, sorry. Ok, i remove three connector from pre-amp board, which i thing is bad, everything is fine, the amp work, but i wont L/R to work, but i have not working ''R'' channel. I remove all transistors from ''R'' I thing they are perfect. Remove all caps, they are perfect. Now i have one zener, all resistors. This is not normal, this is first stupid repair, which i see. All perfect=not working???
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Post by mastertech on Mar 13, 2019 19:22:50 GMT -5
I have read your post about 6 times and I am still not clear on what you are saying. Can you be more specific?
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Post by kopraish on Mar 14, 2019 4:18:58 GMT -5
I understand you, my english e horrible.
I remove three connectors from pre-amp board (where i thing is bad channels).... and i put pre amp board in amp board, now with only 4 connectros( they are 7 all). Receiver work with 4 channel at this moment.
Now i remove all transistors from Rihgt channel( which i thing is bad), all transistors after removing are fine, all resistors in Right channel are fine, all caps in Right channel is purfect, zener diode is good... and where is the problem?
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Post by tibimakai on Mar 14, 2019 10:17:26 GMT -5
Try putting back one connector at a time, and see which channel will cause the problem.
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Post by kopraish on Mar 14, 2019 13:05:21 GMT -5
Now receiver is working. I remove parts from bad channel and put from other good channel. Thansk you all who help me here.
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Post by tibimakai on Mar 14, 2019 14:12:49 GMT -5
Which channel was the bad one, and which parts did you find that were bad?
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Post by kopraish on Mar 15, 2019 1:25:39 GMT -5
SL, C, R are bad, change all parts without resistors.
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Post by tibimakai on Mar 15, 2019 2:07:19 GMT -5
Three bad channels? That is weird, I have never had an issue like that before.
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Post by kopraish on Mar 15, 2019 10:10:48 GMT -5
Yes, three bad channels. This is my first Onkyo receiver, imposible and not ligical for repair, but i am satisfied  . Perfect for stereo + USB. |
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Post by tjmotter on Mar 15, 2019 12:22:32 GMT -5
Just to double check, it is possible that the potentiometers that adjust the idle voltage are set too high causing a high voltage condition. You may want to try turning them all the way to the left and then power on the amplifier. Once you do this you will need to adjust them back to the proper operating range but if someone "played" with them they could be causing the amp to shut off. I can think of no other reason for an amp with only 2000 hours on it to blow 3 channels (unless it did not have adequate air flow for cooling.
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Post by kopraish on Mar 15, 2019 13:28:46 GMT -5
The channels are not blown, may be any defect i don't know. The potentiometer for idle voltage are fine://
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Post by tibimakai on Mar 15, 2019 14:27:10 GMT -5
You have to use a 100 Ohm resistor, on each wire. Also there is an initial setting and than, after a few minutes another one.
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. Perfect for stereo + USB.
