[Milsurplus] BC604 capacitor question
gl4d21a at juno.com
gl4d21a at juno.com
Tue Sep 5 11:13:07 EDT 2006
I am restoring a BC604 that had a tremendous "hum" in the audio
and
have found a leaking capacitor that seems to be the cause. The
capacitor has a metal case and appears to be grounded through that
case. The capacitor is listed in the TM as:
C145 3DB2.21 Type TLA10020, 2microfarad, 1000VDC Plate supply
filter
If anyone has an idea where to find one or a reasonable alternative,
I would appreciate a suggestion.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Dean:
My 603/604 manuals are out in the archive at the moment, but I cannot
recall why that capacitor needs a 1000 volt rating. Disconnect the +
lead of the existing capacitor and connect a 2 or 5 Mfd. 250V or
higher electrolytic in its place and see if that cleans up the hum.
If it does, then all you need to decide is how to accomplish an
acceptable restoration. Most likely, your only option will be to
open the case of the old cap and restuff it with a modern
replacement. Check wit some of the antique radio archives for
details of restuffing capacitors.
73,
George
W5VPQ
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