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Old 08-22-2024, 04:32 PM
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bandersen bandersen is offline
RCA 741PCS
 
Join Date: Mar 2009
Location: Chicago, IL
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Looks like it's a 130 ohm (R4?) resistor so that's fine and 20% high is fine too.
Odd half wave power supply design with the center tap being the -6.3 volt rail.

Could be as simple as CR2 being bad. Looks like it's there for protection. Perhaps it is same to disconnect the load form this board and measure the voltages? That way you could isolate the problem to this board or what it is powering.
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Last edited by bandersen; 08-22-2024 at 04:41 PM.
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