Hp 201C Audio Oscillator - Problem

Discussion in 'The Projects Forum' started by Mckayman, Jul 15, 2009.

  1. Mckayman

    Thread Starter Active Member

    Jun 22, 2009
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    0
    Well I had a working hp 201C A. O. working here for a while, recently however it just seemed to mess up on me. It seems that it just puts out 60hz now, I can still adjust the attenuation on it, but the only frequency it puts out is just 60hz. So something is a miss here.
     
  2. Mckayman

    Thread Starter Active Member

    Jun 22, 2009
    50
    0
    Well it appears that I have corrected the problem. Bulb RT11 which looks like complex light bulb was in too tight? When I loosen this bulb the device seems to start working again.
     
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