[Drake] TR-3 S-Meter Short
Rob Matherly
[email protected]
Thu, 28 Feb 2002 18:18:55 -0600
Hi all;
I was told the source of the problem with my Drake may be a shorted
S-Meter. I checked the meter, and there is indeed a short across it. I
took the meter out of the circuit, and the meter its self shows short. I
checked the wires, and they show as being shorted also.
1. Is the meter supposed to be show as a short?
2. If it is busted, does anyone have a spare they want to get rid of?
3. If it is busted, could a short in the circuit have fried it?
I checked across the meter-zero pot (in circuit), and it is shorted also.
The pot is in series with the +250 line, and the wiper goes to the S-Meter.
The other side of the S-Meter goes out to a couple transformers and a 220
ohm resistor that goes to the +250 line right before the pot.
Anyone have any ideas as to where my short may be at? This thing was
re-wired by the person before the person who had it before me, and most of
the wires are the same color, which doesn't make things very easy :^)
72/73/oo
Rob, kc0bom
ARRL; FP Qrp -330; Live-Wire #442; IA QRP #143; SOC #497; QRPp-I #19
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