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Old 04-11-2025, 02:30 PM
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bandersen bandersen is offline
RCA 741PCS
 
Join Date: Mar 2009
Location: Chicago, IL
Posts: 8,808
Kinda reminds me of the Crosley 9-407.

Here's a peek inside the big tuner drum. Each strip has caps and coils for a single channel. I believe they claim its UHF ready meaning the tuner LO can handle the higher frequencies. Just pop in some UHF strips for your broadcast area. LO uses a 6C4 oscillator.

I am able to sort of pick up a signal as I rotate through the channels. I can hear and FM radio station and briefly see my test image. I thought it might be dirty contacts, but some testing revealed bad tubes including a 6CB6 in the tune with no emissions.
Also found a weak 6AU6 IF tube, 12AT7 and 17AU7 AGC and video amp
I'll pop in some replacements shortly.


Replacing some electrolytics also increased the vertical deflection. Have not been shocked...yet...
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