Without a schematic in front of me I can't be certain, but most likely it has a 5U4 or other rectifier tube and with that pulled, there is no higher DC voltage (350 to 450volts). The only power going to it in that state would make it safe to use without being rebuilt.
Tony
On 8/24/2023 10:43 AM, David Breneman via Jukebox-list wrote:
On Thursday, August 24, 2023 at 06:02:25 AM PDT, Paul Humel via Jukebox-list jukebox-list@lists.netlojix.com wrote:
I had the Amp rebuilt in 2019, but was told no need to rebuild the Receiver at that time because the Receiver wasn’t using the Wireless Wallbox circuitry and could just pull out all the tubes.
i have a 148 hideaway waiting to be restored, and I was also toldyears ago that if I'm not using a wireless wallbox, all I have to do ittake the tubes out of the selection receiver and everything would behunkey-dorey. I was dubious of that advice, which basically said thatno capacitors in the selection receiver would receive power withouttubes. *Something* with a capacitor must be getting power inthere somewhere.
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