Thread: 21zp4a crt sub
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Old 03-29-2025, 04:50 PM
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bandersen bandersen is offline
RCA 741PCS
  
Join Date: Mar 2009
Location: Chicago, IL
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I have no idea. What make and model is this TV?
A 5U4 is directly heated so you can't power the filament from a series string.
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