开云体育

Re: SX-16 with snap, crackle, pop ( Bill's beloved SX-17 on the ropes 03/06/21

don Root All Messages By This Member #31276 开云体育 Richard, thanks for asking that question. You did a good job and saved my fingers. ? Perhaps noise came from the Pwr transformer, through the 5Y3 and went unfiltered ?to just the 6V6s [but is filtered to all-else] but then the phones should not have been noisy too. I must have missed some tests. I’m glad this is not a poker game. ? toggle quoted message Show quoted text From: [email protected] [mailto:[email protected]] On Behalf Of Richard Knoppow via groups.io Sent: Saturday, November 30, 2024 4:24 PM To: [email protected] Subject: Re: [HallicraftersRadios] SX-16 with snap, crackle, pop ( Bill's beloved SX-17 on the ropes 03/06/21 ? Congratulations on fixing it. Now I am puzzled by what you mean by bpass of T-5. The power transformer is T-7. Are you not feeding B+ to T-5? T-5 is the driver transformer for the audio. If it has no B+ on it there will be no audio for the loudspeaker or headphones (which come off the secondary of T-5). That would certainly stop any crackling from being audible. What have you left out or disconnected? T-5 gets its B+ from a second ripple filter consisting of R-29 and C-46. Removing B+ from T-5 will disable the 6R7 detector and first audio. Please clarify. On 11/30/2024 8:09 AM, Daniel K1DTS via groups.io wrote: Swapped the power transformer and all is well.? I left the B+ bypass of T5 primary in place to avoid that potential future issue. -- Dan K1DTS -- Richard Knoppow Los Angeles WB6KBL SKCC 19998 _._,_._,_ -- don??? va3drl

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#31276

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