[sdiy] MKS70 power supply issue

[Paul Anderson]

Looks like its just coming off a bridge rectifier. What does it power in the rest of the machine?

--------
Paul Anderson -- VE3HOP

On 2012-11-14, at 9:24 PM, mark verbos <mverbos at earthlink.net> wrote:

> 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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> 
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