Tektronix 2230 schematic

Hi,

I'm looking for schematics of the Tektronix 2230 scope, and specially the
power supply part.
Mine is eating fuses at the moment...

Paul

 

Use an ESR meter to check the PS electrolytics,and ohm the rectifier
diodes.Those are high failure items.Check ebay for a service manual.

 

More on this supply;
FYI,this scope uses a switching pre-regulator to knock rectified line V
(~170VDC) to ~43 VDC,then runs an inverter to produce the secondary
voltages and HV.The pre-reg FET may be shorted,sometimes taking out the TL
594 IC,and the FET Molex connector should be removed and the 3-wire ribbon
soldered direct to the FET leads.

 

Check at http://www.fullnet.com/u/tomg/manuals.htm