Yaesu ft757 service manual

Yaesu FT-757GX II FT 757GX II FT757GXII user and service.

The DISPLAY UNIT (front panel) has one transistor marked Q01 (or Q4001) 2SC496Y which is a NPN Silicon and its application is as oscillator for the DC to DC converter.

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This transistor controls the TO1 (DC to DC converter) which, among other Things, generates the -8 volts required in several sections of the circuitry, the RF UNIT in particular is hy affected and the receiver does not work if this voltage is not supplied from the DISPLAY UNIT.

<i>Yaesu</i> FT 757 Mods and Repairs -

Modifications for the Yaesu FT-757 - RadioMods

NOTE:- The Info on this page has been gathered from different sources around the net.

Manuals - Y - Service Manuals Library

I have not tested all of these mods, use them at your own risk.Yaesu FT 757 Mods and Repairs -


Yaesu ft757 service manual:

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