Re: 5440 no HV or beam

Joseph Rooney

In your photograph where the anode multiplier is connected to the cathode rectifier and the transformer, you can "disconnect" the multiplier by unsoldering it physically from the ourput. BUT! The transformer output must be connected to the cathode diode other wise things will go open loop. If your cathode voltage returns, you probably have a defective HV (anode) multiplier. If it doesn't return, disconnect the rest of the CRT by removing the socket at the rear of the instrument.

And make certain everything is turned off or disconnected before you wade into this diagnosis.

Good luck!

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