[GreenKeys] Model 33 Q1 transistor replacement

[Rob Jarratt]

I have noticed this and I keep it unplugged when not in use, but I wondered WHY it was designed this way? Is there a good reason?

 

Rob

 

From: greenkeys-bounces at mailman.qth.net <greenkeys-bounces at mailman.qth.net> On Behalf Of WAYNE via GreenKeys
Sent: 22 July 2025 19:01
To: Paul Newland, ad7i <ad7i at ad7i.net>; Erik Bruchez <erik at bruchez.org>
Cc: Greenkeys <greenkeys at mailman.qth.net>
Subject: Re: [GreenKeys] Model 33 Q1 transistor replacement

 

On a good 33 ASR, if you leave the machine plugged in to AC and turn off the LINE/OFF/Local switch to OFF, there is still current running thru the large toasty resistor. 

  

Unplug when not in use.  

  

Wayne 

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