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Model 84 late buzz( 1935 run)
morzh
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#4

5 hours ago
In the sch 5 is not GND-ed. In you picture they look connected together.
If the tube is 77 - pin 5 is NOT a heater pin. 1 and 6 are. Pin 3 should be at about 100V. 5 an d 4 are GND-ed.
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Messages In This Thread
Model 84 late buzz( 1935 run) - by Bruce - 03-04-2025, 10:06 AM
RE: Model 84 late buzz( 1935 run) - by morzh - 03-04-2025, 10:25 AM
RE: Model 84 late buzz( 1935 run) - by morzh - 5 hours ago



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  1. The PHILCO Phorum
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