[Fox_Tango] ft-101EX

[af2c@njdxa.org]

Rob -

It almost sounds as if you have no High Voltage.  Check for the 600VDC on 
pin5 of the accessory socket, 300VDC on pin4 and 160VDC on pin3 of the same 
socket.  The measurements are to be taken with a VOM or VTVM between the 
pin and ground.

You also indicate that you are not seeing any cathode current (Most 
manufacturer mislabel this to mean plate current but the measurement is at 
the cathode).  You should see about 50mils of current in the Ic position 
when in SSB and just keying the mike.  If not, check the bias control in 
the on the rear apron and see if you can obtain the 50mils with the mike keyed.

Also check the 12BY7...The driver.  No drive, no power.

Check the relays...Are they pulling in on transmit?

You might want to check the rectifier board...Look for burned and/or 
cracked components.


Good Luck es 73,
Jay/AF2C



At 08:15 PM 2/26/03 -0500, you wrote:
>Greetings,
>
>I am new to the list.  I have acqured an FT-101EX that won't 
>transmit.  The recieve seems to work just fine on all bands, but I can't 
>seem to get the rig to transmit.  The tube filamantes all glow, and the 
>accessory plug is attached and working properly, but I get no collector 
>current reading on the meter.  I have two sets of 6js6c's and no tube 
>tester.  Is there any way I can do anything to determine if these tubes 
>are good or bad without the tester?  If I can assume they are good, does 
>anyone know what I can do to troubleshoot the rig?  Any help is greatly 
>appreciated.
>
>Rob -- N1NUG
>
>
>
>
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