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Korg Forums A forum for Korg product users and musicians around the world. Moderated Independently. Owned by Irish Acts Recording Studio & hosted by KORG USA
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guido1968
Joined: 24 Dec 2017 Posts: 2
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Posted: Sun Dec 24, 2017 8:43 am Post subject: T3 power unit |
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Hello,
my T3 power unit is off, I changed R7 that was burnt, it gives +12-V, -12V but not +5V.
Any help? |
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voip Platinum Member
Joined: 27 Nov 2014 Posts: 3776
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Posted: Sun Dec 24, 2017 12:27 pm Post subject: |
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If the +/-12V supplies are nominal, check, and replace if necessary, D5, L3, C20, C21. Check also for burnt circuit board tracks. |
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guido1968
Joined: 24 Dec 2017 Posts: 2
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Posted: Wed Dec 27, 2017 6:34 pm Post subject: |
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hi,
I changed Q2 and R7, I have all voltages ok (-12, +12 and +5), but the display is blank and the keyboard not working at all, no lights on buttons, etc.
HELP |
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