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53-658 selenium rectifier replacement questions
WyTex
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Posts: 289
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City: Jeffersonville State, Province, Country: PA
#1

08-07-2019, 05:00 PM
Hi guys -

Picked up a clean 53-658 a few weeks and started on it yesterday.  It's all original and clean under the chassis. 
http://www.nostalgiaair.org/Resources/do...013774.pdf

It does not power up on AC and does not register any volts on my amp meter.  Tubes test good.  Am I correct that the likely culprit is the selenium rectifier?  I haven't replaced one of these yet and could use some guidance.

This article suggest installing a terminal strip with 1N4004 diode and resistor between 20 and 200 ohms.  Outside of starting with a 100 ohm resistor and repeatedly measuring, is there a known resistor value I should use?
http://www.w3hwj.com/index_files/RBSelenium2.pdf



Thanks,
Paul
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53-658 selenium rectifier replacement questions - by WyTex - 08-07-2019, 05:00 PM



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