There is a big disconnect in logic here.
How can any 160 ohm resistance drop to zero when you unplug ANY board?
Check your work¡
Gary?
W0DVN
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On Apr 21, 2025, at 8:18?PM, Mike Davidsohn G3ZCC via groups.io <mike@...> wrote:
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Hi everyone.
Haven't had much time for the TR7 due to ill health.
However I have the transistor for the 10R line.
I wondered what caused it to blow in the first place.
I checked the 10R line,for resistance to earth with the test leads in both directions.
It read 160 ohms.
It looked a little low so I pulled,a few boards which used,the l8ne.
if/audio, if filter, switch and 2nd mixer.
One pulling the second mixer the resistance went to zero.
Tried,another board and it was the same.
No wanting to blow the transistor does anyone know if that resistance is correct?
Thanks
Mike
G3ZCC
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