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Akai AA-8080 left channel output has filter issue. Garbled and scratchy output

Left channel scratchy and low ouput

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 83 Answers

SOURCE: No output from left channel after crackling sound

does your unit have a volume knob or is it a paddle type with up and down?

Posted on Jul 12, 2007

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robotek
  • 1512 Answers

SOURCE: Kenwood KR-4010 (late 70's vintage) with signal to IF amp but no output

Don't bypass the relay contacts. They serve to disconnect the amp stages from the speaker if a DC condition is present, and in doing that, save your speakers form damage. Check for a DC offset condition on the junction of the emmitter stabilizer resistors to the STK0040 on each channel. They will be 0.47 ohm power resistors(2 per STK) connected to pins 3 and 8 of the STK. Anything substantially greater that 100mv here generally indicates a blown STK. Don't bother to change both, but just the one that is faulty. Another common problem for this age of amp. The high silver content in the legs of the transistors allows for "growth" between legs and internal connections of the transistor. Check for "black death" on the legs of transistors driving the STK. . . I tend to replace them if in doubt. If you need expert advice, comment me back. I am an audio specialist.

Posted on Feb 03, 2008

  • 236 Answers

SOURCE: hi. i have an Akai aa-8080

when you say it turn on-off you're not able to establish your audio out right? the possibility is that you have a bad speaker causing the system (aa8080) to trip. have you tried turning on without the speakers. can you try it first and then find out if it still does the same. because if there is something wrong in your output stage, you should not get that ticking/switching sound, it is not suppose to turn on (output stage) because that switching you can hear is actually your proitection circuit.

Posted on May 03, 2008

  • 1 Answer

SOURCE: i have an akai aa-a25 reciver and right side speakers only work

I had this problem when I first got this receiver back out of years in a box, but it was fixed by pressing the reset button on the back. Hope that works for you!

Posted on Jul 26, 2009

dunnbiker
  • 8546 Answers

SOURCE: Aiwa 8100 amplifier, low output

Aiwa xx8100??? What are the missing letters? Maybe it's a source or preamp problem, eh?


I presume you have proven the channel is dead by trying multiple sources, swapping a different speaker onto it and that the balance control is NOT all the way to one side; headphones don't work either and we're down to proving it's dead before you take it in to a tech, right?


There is the slighest chance that a common control may have developed a high-resistance or 'dead' spot and is causing your symptom. Turn the POWER OFF and operate every control throughout its range a number of times, especially rarely-used ones like Tape Monitors and the Mute control.


If it still doesn't work you might want to prove if its a low-level signal loss or a high level amp failure. One way would be to run an RCA cable pair from the Tape Out to any other device (even a TV with speakers) you might have that accepts an audio input. If IT can't detect receive the DEAD Channel you

Posted on Apr 09, 2011

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Hi. i have an Akai aa-8080 that powers up OK but starts switching on and off. there is a switch inside thats activating which is wired, connected to the fuse at back of receiver. this switch i think has...


when you say it turn on-off you're not able to establish your audio out right? the possibility is that you have a bad speaker causing the system (aa8080) to trip. have you tried turning on without the speakers. can you try it first and then find out if it still does the same. because if there is something wrong in your output stage, you should not get that ticking/switching sound, it is not suppose to turn on (output stage) because that switching you can hear is actually your proitection circuit.

May 03, 2008 | Audio Players & Recorders

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