It's time to restore the 11/45 - progress!

[Jon Elson]

On 02/05/2015 03:47 PM, Jacob Ritorto wrote:
>    Hey everyone, making some progress here -- thanks for all the tips so far!
>
>    Most of the power regulators are fine, but both H745 regulators seem to
> be toast.  Only getting -1.2 volts; should be -15 and they squeal angrily
> when I turn the pot.  The surplus shops seem to want $200 for one, so
> that's not an option for me.
>
>
If they belch smoke, then they are toast.  Possibly the 
overvoltage crowbar is tripping,
or there is a short somewhere else.  Did you test these 
outside the machine or with
the CPU hooked up?  I think the -15 reg needs +15 to operate 
correctly, as somebody
mentioned earlier.

Jon