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#1
06-06-2007, 07:46 PM
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Sentinel model 338 trouble
I picked up a Sentinel model 338 from a flea market for $20. I know im not supposed to plug in things this old into the wall, but i said what the heck since most radios usually work.
well, as expected (unexpected to an extent), there is no sound. not even a slight hum in the speaker (from possibly dry filter). im thinking loss of B+ or bad speaker. anyone have a schematic to this unit they would like to share? its a 50B5 output. 
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#2
06-07-2007, 07:22 AM
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__________________
Mike Koste Gobs of Knobs Ambler, PA
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#3
06-07-2007, 06:09 PM
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well i tested and got all my voltages, so i dont know what the heck is goin on. probably a bad coupling cap. theres only like 4 or 5 paper caps that need changed. if i have the antenna unhooked, i can hear a slight buzz in teh speaker. if i hook the antenna up, got nothing, dead audio. soooo probably a weak tube or so.
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