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I have just acquired an SB220 that had a parasitic oscillation. I have =
repaired the burnt components and nothing is smoking now. I get a =
negative reading when switching to the "grid" setting on the meter. =
(Enough to pin the meter to the negative side). This occurs with no =
tubes installed, so problems in the grid circuit seem unlikely.=20
Any hints as to what to look for?=20
Thanks de Rich W6VX
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<DIV><FONT size=3D2>I have just acquired an SB220 that had a parasitic=20
oscillation. I have repaired the burnt components and nothing is smoking =
now. I=20
get a negative reading when switching to the "grid" setting on the =
meter.=20
(Enough to pin the meter to the negative side). This occurs with no =
tubes=20
installed, so problems in the grid circuit seem unlikely. </FONT></DIV>
<DIV><FONT size=3D2>Any hints as to what to look for? </FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>Thanks de Rich W6VX</FONT></DIV></BODY></HTML>
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