Heathkit Sb-102 150 Volt problem

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Heathkit Sb-102 150 Volt problem

vecher
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Posts: 933
Threads: 140
Joined: Mar 2015
City: Lansdale State, Province, Country: PA

01-21-2020, 12:29 PM

All, I seem to have a problem with the +150 Volt supply..I found the 1K 7 watt resistor open I replaced it and turned the radio on I then smelled something burning the resistor again had opened.. so question is what does the + 150 volts feed? must be something either shorted or drawing a lot of current..

This is in RX mode My HV 800 Volts are good and also the +300 volts The bias voltage manual says -111 I read -124..

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