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2018即兴大讲堂下半年即将开课,请的都是大咖,讲的都是干货!
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Yamaha PF80 (Electronic Piano) speaker issue

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发表于 2018-7-3 21:09 | 显示全部楼层 |阅读模式

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Hi,

I have a Yamaha PF80 Electronic Piano from 1985. Today I found out that the right speaker didn't work. While trouble shooting I plugged in some headphones and the right headphone doesn't work either. I have tried changing the speaker balance but that didn't work. In fact when I move the balance all the way to the right, the left speaker gets louder. That may reveal something? This may or may not be the cause of the issue, but I opened it up to clean it up and may have put it back together wrong?  But I barely took anything apart. I did take the actual keyboard
out which meant taking a number of screws out but I can't
see how that would effect the speakers.
Any ideas would be appreciated.

Please help.

I didn't find the right solution from the Internet.

References:-
https://yamahamusicians.com/forum/viewtopic.php?t=4486
Motion Infographic Animation Company

Thanks!
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发表于 2018-7-3 23:35 | 显示全部楼层
May be the volume fader broken. Try to change it.
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发表于 2018-8-10 16:48 | 显示全部楼层
老款电钢琴pf80,1985年生产,距今30多年的历史,现在右侧一侧线路输出及右侧扬声器均不能发声,这种情况下可以考虑检查运放芯片的工作状态,时间长了,查看一下相关焊点是否虚接了,也是必要的检查步骤。在论坛混这么多年了,第一次回复英文帖子~有点儿意思,看看有没有后续回应反馈情况吧。
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发表于 2018-8-14 16:53 | 显示全部楼层
乐龙 发表于 2018-7-3 23:35
May be the volume fader broken. Try to change it.

我靠 李老师英文这么厉害啊
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发表于 2018-8-14 23:49 | 显示全部楼层
夫夫老师过奖了!只是生搬硬套(可能不够规范地道),希望外国朋友能大致理解。如表达有误,欢迎夫夫老师及论坛朋友i纠正(我要表达的是:有可能音量推子损坏,试下把它换掉)
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