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 Post subject: Akai AA R30
PostPosted: Jul Tue 10, 2018 11:01 am 
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Joined: Jul Tue 10, 2018 10:47 am
Posts: 2
Hi does anyone know what I can do on my receiver. it only play on one channel if I play with the volume control then it plays correctly or if I bias the volume control it plays, I used to use a rubber band around another knob to get it to play both channels. I have tried finding a replacement volume control with no luck is there any other options? Thanks


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 Post subject: Re: Akai AA R30
PostPosted: Jul Tue 10, 2018 2:16 pm 
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Joined: Jul Mon 26, 2010 8:30 pm
Posts: 26405
Location: Annapolis, MD
Have you tried cleaning the controls?

But first, has this set been electrically refurbished....e.g. New filter capacitors and other components inspected and tested?

for the best help, tell us your level of experience with electronics.

EDIT: is this it?
https://www.radiomuseum.org/r/akai_ster ... a_r30.html

_________________
-Mark
"Measure voltage, but THINK current." --anon.


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 Post subject: Re: Akai AA R30
PostPosted: Jul Tue 10, 2018 4:58 pm 
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Joined: Feb Sat 12, 2011 2:29 pm
Posts: 546
Location: Fayette County, Pa
Having to put a rubber band around the controls to get it to work seems like the problem is something physical. Check for a cold solder joint on the control that might be open unless it is pushed to one side.


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 Post subject: Re: Akai AA R30
PostPosted: Jul Wed 11, 2018 11:11 am 
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Joined: Jul Tue 10, 2018 10:47 am
Posts: 2
I bought the set new, it has never been tested or in a shop. I wasn't sure the best to clean the controls. I figures they were dirty, I could check for loose solder joints. would spraying compressed air be ok? thanks for the help


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 Post subject: Re: Akai AA R30
PostPosted: Jul Wed 11, 2018 11:51 am 
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Joined: Jul Mon 26, 2010 8:30 pm
Posts: 26405
Location: Annapolis, MD
I recommend not operating that receiver until the filter capacitors have been replaced.

Inspection is always an important first step, but I'm not sure that you will be finding bad solder joints.

Cleaning controls:
First, CHECK the control with an ohmmeter. One lead on an end terminal and one lead on the wiper. See if the resistance changes smoothly and consistently as you rotate the control. If not, spray in a small amount of WD40, rotate the control a few times, and repeat the test.

_________________
-Mark
"Measure voltage, but THINK current." --anon.


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 Post subject: Re: Akai AA R30
PostPosted: Jul Wed 11, 2018 8:59 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 4265
Location: Boston, MA USA
That's a solid-state set which is still fairly new. I really don't think there is anything wrong with the filter capacitors.

-David


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 Post subject: Re: Akai AA R30
PostPosted: Jul Wed 11, 2018 9:01 pm 
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Joined: Jul Mon 26, 2010 8:30 pm
Posts: 26405
Location: Annapolis, MD
There is certainly some chance they are still good. But, unless you know specifically what was used, it is safer to replace them. Hard to believe that 1980 is almost 30 years ago.

_________________
-Mark
"Measure voltage, but THINK current." --anon.


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