[sdiy] Prophet 5 -15v rail is shorting... Need advice

[Gil W.]

You were right. Replacing to 3A diodes and rectifier
didn't help. But I did find something interesting... 
I replaced the Polysix transformer with another
Polysix transformer I have; wanted to see if anything
would change.

What I got is even lower +15v voltages. This one has
dropped the voltage to below 14v !! So can we conclude
from this experiment that simply the P6 transformer
cannot handle the Prophet's load ?

Btw, the voltages going to the regulators with this
(the second) transformer, are:
+21.20v
-23v

Thanks !


--- Paul Perry <pfperry at melbpc.org.au> wrote:

> That wouldn't do it.
> The diodes would either work, or fail.
> 
> What are the unregulated voltages at the input to
> the regulators?
> 
> Paul Perry Melbourne Australia
> 
> -----Original Message-----
> Wow... Now I realize I'm also using 1N4007 which are
> 1A !! So definately I used wrong parts ! But could
> this cause the exact +15v problem I mentioned ?
> 
> 
> 


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