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Products => Test Equipment => Topic started by: diode702 on February 24, 2013, 11:16:35 am

Title: hp 204d
Post by: diode702 on February 24, 2013, 11:16:35 am
Has anyone  got experience with this 204d oscillator.  I was give  this 204d and a hp power supply 0 to 3o v at 3 amps and a tek  2235 scope.  ive got the scope and the power supply working great but the 204d is giving me trouble.  It was clean but dosenot work.  After i finally got it apart i located the plus 13 and -13 power supply which was working ok but the unit has no output.  I found a operator manual on the internet but no schematic or troublingshooting info.  Does any one have a schematic or know where i can get one.

thanks diode 702
Title: Re: hp 204d
Post by: amspire on February 24, 2013, 11:42:02 am
The 204C manuals are here. Hopefully not too different (
Title: Re: hp 204d
Post by: flash2b on June 18, 2018, 05:29:58 am
I recently also acquired a HP204D

Operating and Service manual for HP204C and HP204D models are here: ( On that site please wait till "processing" is turned into "download"

However the power supply schematics are not in the Elektrotanya link, but gladfully they are part of the Bama link.