Glenn,
I realize all of what you have very clearly stated. However, All of the diodes on this board are marked as "CRxxx". I am not a complete stranger as to how TEKTRONIX schematics have been marked in the past. There are Zener Diodes in clear, red tinted glass packages as well, they look just like the Fast switching diodes (e.g.1N4148, etc.), It may take a curve tracer to tell them apart (thankfully, I have one). While yes, they are all technically "crystal rectifiers", there is no delineation on this board as to which is a Zener, Schotky, High Speed switching, Standard Rectifier or anything else. All of this could have been avoided if they had just seen fit to release a schematic. They wanted to sell complete replacement boards, new scopes and not encourage board level repairs. This really handicaps those of us who need a schematic to follow. I am not one who can look at the loaded board and figure out how it works without a schematic, i wish that I was.
I appreciate your comments and insights!
Sincerely,
--
Michael Lynch
Dardanelle, AR
Mlynch001