T4X experts:
I just finished a rebuild (Mike WB4VGE's kit) of the AC4 which came with the T4X. Excellent kit and instructions.
The AC4 checked out as specified.
Connecting the AC4 to the T4X IMMEDIATELY killed the 290VDC line and opened the two 200 ohm parallel sand resistors.
Starting at pin 11 of the connector I unhooked the bypass cap, then one of the two red/white wires.
The short (<2 ohms to ground) stayed with the disconnected wire.
I undid some of the wire ties and located a terminal strip near the function switch. There were two red/white wires.
Disconnected one and the short stayed with the disconnected which goes to the function switch.
Now the puzzle. If the function is AM the short goes away and the reading is in the several K ohms range.
Of course, I was trying to set the bais in the tune position when the 290VDC line went ou.
I need some advice. Where to go next?
Thanks in advance and 73,
Larry K3VX
I just finished a rebuild (Mike WB4VGE's kit) of the AC4 which came with the T4X. Excellent kit and instructions.
The AC4 checked out as specified.
Connecting the AC4 to the T4X IMMEDIATELY killed the 290VDC line and opened the two 200 ohm parallel sand resistors.
Starting at pin 11 of the connector I unhooked the bypass cap, then one of the two red/white wires.
The short (<2 ohms to ground) stayed with the disconnected wire.
I undid some of the wire ties and located a terminal strip near the function switch. There were two red/white wires.
Disconnected one and the short stayed with the disconnected which goes to the function switch.
Now the puzzle. If the function is AM the short goes away and the reading is in the several K ohms range.
Of course, I was trying to set the bais in the tune position when the 290VDC line went ou.
I need some advice. Where to go next?
Thanks in advance and 73,
Larry K3VX
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