Hello
I am trying to fix a Akai AM-U110 stereo integrated amplifier. https://www.hifiengine.com/manual_library/akai/am-u110.shtml
I have tracked down the problem to a bad switch i.e. the SOURCE - TAPE selection switch SW1-1. See the red arrows in the schematic.jpg file. I can hear the audio volume change and sound popping and crackling when I wiggle the push lever on the switch. It happens in both positions of the switch on both channels.
Schematic
https://postimg.cc/image/5mljt4ntj/
Photo of switch. (In both photos its the switch on the left)
https://postimg.cc/image/6c4c5kw3r/
https://postimg.cc/image/xzh1jqu5z/
The symbol on the switch looks like the matsushita emblem in this list. The first one with the triangle and arrows. https://www.electronicspoint.com/resources/logos-for-electronic-component-manufacturers.47/
My problem is.. I dont know what this type of switch is called, don't know where to source it. The white body length is about 18mm and from memory the width is 10mm or 7mm. Cant remember.
Also it must be a switch with 4 x double throw switched as indicated in the schematic. Such a switch have 12 legs. But this only have 10 legs. 3 on each side for the double throw to select between tape and source and the other two legs on each side is then single throw switches for the leds.
Any help?
Thanks?
I am trying to fix a Akai AM-U110 stereo integrated amplifier. https://www.hifiengine.com/manual_library/akai/am-u110.shtml
I have tracked down the problem to a bad switch i.e. the SOURCE - TAPE selection switch SW1-1. See the red arrows in the schematic.jpg file. I can hear the audio volume change and sound popping and crackling when I wiggle the push lever on the switch. It happens in both positions of the switch on both channels.
Schematic
https://postimg.cc/image/5mljt4ntj/
Photo of switch. (In both photos its the switch on the left)
https://postimg.cc/image/6c4c5kw3r/
https://postimg.cc/image/xzh1jqu5z/
The symbol on the switch looks like the matsushita emblem in this list. The first one with the triangle and arrows. https://www.electronicspoint.com/resources/logos-for-electronic-component-manufacturers.47/
My problem is.. I dont know what this type of switch is called, don't know where to source it. The white body length is about 18mm and from memory the width is 10mm or 7mm. Cant remember.
Also it must be a switch with 4 x double throw switched as indicated in the schematic. Such a switch have 12 legs. But this only have 10 legs. 3 on each side for the double throw to select between tape and source and the other two legs on each side is then single throw switches for the leds.
Any help?
Thanks?
