RCA 9TC240 Alignment...The start of my education (I hope!) - Videokarma.org TV - Video

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RCA 9TC240 Alignment...The start of my education (I hope!)

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#14

08-22-2024, 05:32 PM

bandersen

RCA 741PCS

Join Date: Mar 2009

Location: Chicago, IL

Posts: 8,829

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 05:41 PM.

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