Harbinger 1.5 Bulb pulsating momentarily

[Axeman]

So I finished My Harbinger 1.5 today when I powered it up 9V the bulb pulsated for about 3 seconds and the light remained steady.  so I disconnected the power and tried it again, and same thing pulsates then stops.
Any help

[Axeman]

OK got it working Q11 and Q12 (MPSA13) replaced.  The way I figured it out was by shorting the ground on Q11.  Hope that helps someone else.