[sdiy] MKS70 power supply issue

[mark verbos]

James,

Is that measurement unloaded? Because that supply line is unregulated, it will likely droop when it's loaded. Maybe 3 volts...


Mark



On Nov 14, 2012, at 8:44 PM, james meagher wrote:

> I got my MKS70 working again, but the power supply is putting out +10V
> where it should be putting out +7V (according to the schematic
> anyway). It is however correctly supplying +5V, +15V and -15V as it
> should.
> 
> I'm not too sure where to begin because the schematic only shows what
> the board's output voltages are, and has no voltages marked around any
> of the components, so I don't know what to be looking for and where.
> 
> FYI, C11, C1 and C9 are new, so are likely not the culprit.
> 
> Any advice appreciated.
> 
> You can see the schematic of the PSU here:
> https://www.dropbox.com/s/jstusojn3610cf6/RolandMKS70PSU.jpg
> 
> Cheers,
> James
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