KORG M1 - No sound / Low battery indication. SOLVED!

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Yekuku
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Joined: Tue Nov 18, 2008 11:29 am
Gear: dk'tronics speech synthesizer :P
Location: Greece

Re: KORG M1 - No sound / Low battery indication. SOLVED!

Post by Yekuku » Mon Feb 10, 2020 6:32 pm

Hi, I have the inconvenience of battery low (internal). According to what I read, I initially changed the C23 for a new one, and everything remained the same. Then I changed the rest (c11,19,18,21 ... etc) and it keeps telling me the same error. Any idea what the fault may be? I inherited the keyboard. my father used it to work, and when he died it was me. It was a while without being used and when I turned it on it said that error. I had the programs but did not emit sound. I changed the battery and it was reset and I could not remove that low battery message.
Hi and welcome on the board.
Please confirm that you are getting 12V, -12V and 5V from the power supply.
It is all about sharing...

HeMagliano
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Re: KORG M1 - No sound / Low battery indication. SOLVED!

Post by HeMagliano » Thu Feb 13, 2020 8:17 pm

Yekuku wrote:
Mon Feb 10, 2020 6:32 pm
Hi, I have the inconvenience of battery low (internal). According to what I read, I initially changed the C23 for a new one, and everything remained the same. Then I changed the rest (c11,19,18,21 ... etc) and it keeps telling me the same error. Any idea what the fault may be? I inherited the keyboard. my father used it to work, and when he died it was me. It was a while without being used and when I turned it on it said that error. I had the programs but did not emit sound. I changed the battery and it was reset and I could not remove that low battery message.
Hi and welcome on the board.
Please confirm that you are getting 12V, -12V and 5V from the power supply.
I'm not getting the right voltages. Instead of -12 have 22 And instead of 5 I get 10. The keybord is getting check by a service now But i think i can give him an idea with your help. Thanks!

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Yekuku
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Posts: 633
Joined: Tue Nov 18, 2008 11:29 am
Gear: dk'tronics speech synthesizer :P
Location: Greece

Re: KORG M1 - No sound / Low battery indication. SOLVED!

Post by Yekuku » Fri Feb 14, 2020 9:31 am

Obviously the problem is located in the power supply.
The fact that you are getting 10Volts instead of 5V is bad news, digital components dont like overvoltage.
Good luck, let us know how it goes.
It is all about sharing...

HeMagliano
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Posts: 3
Joined: Mon Feb 10, 2020 4:00 pm

Re: KORG M1 - No sound / Low battery indication. SOLVED!

Post by HeMagliano » Fri Feb 14, 2020 11:09 pm

Yekuku wrote:
Fri Feb 14, 2020 9:31 am
Obviously the problem is located in the power supply.
The fact that you are getting 10Volts instead of 5V is bad news, digital components dont like overvoltage.
Good luck, let us know how it goes.
The first was an oxidized welding of a coil (the green things in the power supply). and also an R80 resistor in the DAC. When it is resolved I tell you.

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