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No filament voltage to one of the tubes. - Audio Players & Recorders

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Hi,

Could be a wiring problem or a PCB problem.
Maybe it's a dirty or broken tube socket.
If the other tubes are glowing, it must be one of those problems.

regards,
Gerard

Posted on Jan 12, 2010

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6_12_2012_3_39_43_pm.jpgit is also called a FLYBACK.

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1 Answer

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check tv screen on three colour RED /BLUE /GREEN is prasant but light or contrace is low .
if yes
then
first option is video output voltage 180v dc.canacting capaciter Replace with 10uf/250v dc
second option filament voltage 4.5v ac to up 6.5 v ac
and see pictur qulaty is improw .
theerd option is pictur tube charging 3 cathod

after change tube
see tube find this addrees
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