[R-390] Knob removal...cont'd

Barry n4buq at knology.net
Thu Sep 26 20:29:13 EDT 2013


If you can see it well enough, make sure someone hasn't replaced the spline-drive screws with hex-drive screws.

Regards,
Barry - N4BUQ


> Thanks to all for your input as I progress in restoring my first
> 390A!
> 
> I recently purchased a small set of Bristol wrenches to remove the
> knobs...ya know the type....little and not very fun to work with.  I
> have been successful in removing all but the two main tuning knobs.
>   It appears as though they are either stripped out or my wrench is
> two small.  I can't imagine that they would design those knobs with
> a different size set screw.
> 
> anybody had the same issue?  If they are stripped, any tips on how to
> get those out of there?  It's not like they are easily accessible..
> 
> Thanks again,
> 
> Dave


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