Re: Need Help with Amp Supply LK500ZC
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Especially the PLATE VOLTAGE meter it must measure 2400 to 3000 and decay to zero with the AC line power switched off.? Do NOT touch anything if it doesn¡¯t work this way! ? One more thing ¨C when you get to the part when you want to remove a tube be sure the plate cap off the tube you removed doesn¡¯t touch the chassis and completely UNPLUG the AC power cord before opening it up. ? Mike N2LYM ? ? ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Bob
Sent: Wednesday, November 29, 2023 9:16 PM
To: [email protected]
Subject: Re: [ham-amplifiers] Need Help with Amp Supply LK500ZC ? Verify that your meters are working correctly. ? Lou, Mike and all,
I turned it on and watched it with no drive.? At around 5 minutes the plates began turning red. See hopefully attached pictures.? I got no reading (0) on the plate and grid current meters.? I haven't yet tried removing the tubes.
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