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#1
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![]() "William Mutch" wrote in message ell.edu... On my rig the line measures only millivolts negative and 0.4 ohms to ground. I thought first I had a shorted electrolytic and replaced all the caps on the line. No joy. Then I thought the transformer center tap might be shorted to the case, so I unsoldered it and measured it. The Xformer is very healthy but the line still measures 0.4 ohms to ground. Any suggestions what I should look at next? tnx de kc2lvq This happens all the time when somebody replaces the filter caps with the typical modern ones that have the case connected to the negative lead. The original capacitor probably had two leads, neither one grounded to the case. You may need to insulate the capacitor case from chassis ground. |
#2
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![]() This happens all the time when somebody replaces the filter caps with the typical modern ones that have the case connected to the negative lead. The original capacitor probably had two leads, neither one grounded to the case. You may need to insulate the capacitor case from chassis ground. This filter cap is an actual new old stock in the old style case which sits in an octal socket isolated from ground. I can try pulling the cap and see if the B- line goes up to 500 ohms above ground. |
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