Old Motifator threads are available in the Archive.
Tjenkins76
Total Posts: 4
Joined 12-07-2016 status: Newcomer |
I own the Motif XS7 but my first board was the Motif Classic 6. I have not played the classic in a while it has been kept in a case. I am now playing for a band and can use a second board so I pulled out the classic and started tinkering with it. I notice that my my outputs do not play together. When I test them individually they work but when they both are plugged in only the right output channel works. Any ideas on what may be causing this and how do I fix it? |
5pinDIN
Total Posts: 11891
Joined 09-16-2010 status: Legend |
Welcome to the forum.
With a plug in both R and L/MONO jacks, R should produce the right channel signal, L/MONO should produce the left. When no plug is inserted in the R jack, the L/MONO output is normally a mix of left and right channels. From your description, it seems that the left channel line output is dead, so that when you separately test the L/MONO output, you’re actually getting just the right channel.
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Tjenkins76
Total Posts: 4
Joined 12-07-2016 status: Newcomer |
This is strange with headphones in the headphone jack both channels play. With headphones in either the right or the left jack, only the right ear of my headphones play. Does that mean my left mono channel is dead? What else is strange if you take a look at the picture with the left jack cable all the way and the right just in a little bit both channels play. See attachment Image Attachments
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5pinDIN
Total Posts: 11891
Joined 09-16-2010 status: Legend |
It means that the left line output amp isn’t functioning. It could be a failure of the op-amp, an open output coupling capacitor, a shorted muting transistor, or possibly another defective component in that circuit. That could be repaired, or… Since headphones work on both channels, you could use the PHONES output by getting a TRS-male to two-TS-female breakout cable such as https://www.amazon.com/Hosa-YPP-117-Stereo-Breakout-Cable/dp/B000068O54 The headphones working on only one side when plugged into the line outputs is normal, since those jacks are TS type and only the Tip and Sleeve (but not the Ring) of the headphone plug will make contact.
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There’s nothing strange about it. The R jack has switching contacts built in. If you don’t push the plug all the way in, the switch isn’t opened and the right channel signal will still be connected to the L/MONO jack. Both channels don’t play that way, you’re getting the right channel out of both jacks. Try panning the output and you’ll see what I mean. |
Tjenkins76
Total Posts: 4
Joined 12-07-2016 status: Newcomer |
If I wanted to research getting it fixed as an option how would I go about finding a shop that does that kind of work? |
5pinDIN
Total Posts: 11891
Joined 09-16-2010 status: Legend |
Where are you located? |
Tjenkins76
Total Posts: 4
Joined 12-07-2016 status: Newcomer |
North Virginia |
5pinDIN
Total Posts: 11891
Joined 09-16-2010 status: Legend |
Yamaha authorized service in the US:
There are good keyboard technicians who aren’t necessarily authorized by Yamaha, but I don’t know any in your area. You might want to ask bandmates. |
elka44@teletu.it
Total Posts: 3
Joined 01-30-2017 status: Newcomer |
the same thing happen on my keyboard ................ I opened it and saw the two inflated capacitors card. that is not the problem ...........? I try tomorrow and I will let you know .... |
jazzkeys818
Total Posts: 2
Joined 04-19-2022 status: Newcomer |
hi i have the same problem..any updats on what this is? |
Wellie
Total Posts: 6215
Joined 05-09-2003 status: Guru |
Keyboards get old like the rest of us. Frequently, dirty contacts can mess with our pristine musical world. However, it is likely your boards may need some TLC from an electronics engineer. Caps (capacitors) leaking is a well know issue in Rolands of a certain era. Whilst one would hope that the Motif is not susceptible, it isn’t impossible. The caps are inexpensive but getting someone to spot the problematic ones and brandish the soldering iron, is likely to pricey. |