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38-39 Vibrator Power Supply Replacement
Olskuul
Olskuul
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Posts: 33
Threads: 5
Joined: Apr 2015
City: Townsend, MA
#15

07-28-2017, 06:57 AM
Loud buzzing persists, even after changes per the Philco bulletin. A portable transistor radio also picks up this buzz when placed near the vibrator assembly. O'scope shows a clean DC level and voltmeter measures around +125vdc, so this appears to be RF noise. I ordered some correct buffer capacitors, as the Z5U tolerance is unsuitable. But I don't believe this cap is the root cause. Any other suggestions to quiet this thing down? The radio seems to be working fine otherwise.
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RE: 38-39 Vibrator Power Supply Replacement - by Olskuul - 07-28-2017, 06:57 AM



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