Tyros1 power supply rebuild(fix)

Section for information and discussion about the Yamaha Tyros 1, 2 , 3,4 and 5 Arranger Keyboards.

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Tyros1 power supply rebuild(fix)

Unread post by Dude86 »

Hi everyone I’m new to the forum
Probably this topic was well talked trough somewhere else but just point me to the right direction if it is :arrow:
So basically I bought a Yamaha Tyros1 with possibly power supply issue and I’m looking for a kind of a brake down on how to find the problematic part of the power supply and what do I need to do to fix it
So far I opened the keyboard and pulled the white plug from the power supply and put my tester on each of the pins and all I had is 9volt present and nothing at the rest
Now if I’m informed well then it should be something like 9volt 12volt and 5volt (correct me if I’m wrong)
So this is where I’m at at the moment
(Only backlight of the screen is on )
Thanks in advance

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