From teknoskillz at comcast.net Thu Apr 1 23:15:24 2021 From: teknoskillz at comcast.net (Steve H) Date: Thu, 1 Apr 2021 23:15:24 -0400 Subject: [Kenwood] ALC with Kenwood TS-830S In-Reply-To: <7E3BDE361C2F46369E231EAF0946949F@HAL2000> References: <5DF0F987F78A4642937B5F3AD581F34D@HAL2000><3efb2e27-cfd6-25e2-b618-8bd4161531de@gmail.com><614C077DA5C244B4A9D86EA939606956@HAL2000><6b6c37ea-dfb7-5b75-00cd-412056f31403@gmail.com><368d38dc-2b0f-a6b5-74fa-6e252f9b97fa@gmail.com><1998183a-0af7-1134-29ba-c3c6be7a1977@avvid.com> <7E3BDE361C2F46369E231EAF0946949F@HAL2000> Message-ID: Well its now working. My mistake, I had +6V going in as the threshold not -6. Thank you to all who responded. -- Steve Hearns KA2PTE From wa9wsj at yahoo.com Sat Apr 3 22:36:29 2021 From: wa9wsj at yahoo.com (Tom WA9WSJ) Date: Sun, 4 Apr 2021 02:36:29 +0000 (UTC) Subject: [Kenwood] TS-520 No output! References: <1882452195.379394.1617503789467.ref@mail.yahoo.com> Message-ID: <1882452195.379394.1617503789467@mail.yahoo.com> Hello Gents, I'm working with a TS-520, (not the S version), and get zero output, in all modes.? Going through the manual, step by step, to tune it up into a dummy load I get all the proper meter indications as described. It will perform just as the book says but no output! I've replaced the finals and looked for any burned parts or areas and nothing. It all looks good. I've followed the rf path from the coax connector all the way to the load cap and all is good. The path from the HV source is also good all the way to the plates. I've deoxed the wafer switches, and the SG switch is in the proper position and works, I ohmed it.? I've checked and even cleaned the T/R relay contacts but no go. I've checked the value of fixed caps in the circuit but they are okay.? The only off value part is the 1 watt 10k ohm resistor feeding the 1n60 diode, it measures around 18k. But this may be due to other components skewing the reading. I did find a great thread on QRZed but it was for a "S" version and what hints might apply, did not help. Anyone have any ideas? I'm stuck! Thanks!!! Tom From rick.nk7i at gmail.com Sat Apr 3 22:43:38 2021 From: rick.nk7i at gmail.com (Rick NK7I) Date: Sat, 3 Apr 2021 19:43:38 -0700 Subject: [Kenwood] TS-520 No output! In-Reply-To: <1882452195.379394.1617503789467@mail.yahoo.com> References: <1882452195.379394.1617503789467.ref@mail.yahoo.com> <1882452195.379394.1617503789467@mail.yahoo.com> Message-ID: Here is the service manual: http://www.radiomanual.info/schemi/KENW_HF/TS-520_serv.pdf Note that it requires 6146B (not A) finals.? It's very possible that they have failed after so many years. I have the S version (with the DC supply) in storage and it hasn't been powered in 30 some years.? It was my first HF radio purchase a very LONG time ago. 73, Rick NK7I On 4/3/2021 7:36 PM, Tom WA9WSJ via Kenwood wrote: > Hello Gents, > I'm working with a TS-520, (not the S version), and get zero output, in all modes. > Going through the manual, step by step, to tune it up into a dummy load I get all the proper meter indications as described. It will perform just as the book says but no output! > I've replaced the finals and looked for any burned parts or areas and nothing. It all looks good. I've followed the rf path from the coax connector all the way to the load cap and all is good. The path from the HV source is also good all the way to the plates. > I've deoxed the wafer switches, and the SG switch is in the proper position and works, I ohmed it. > I've checked and even cleaned the T/R relay contacts but no go. I've checked the value of fixed caps in the circuit but they are okay. > The only off value part is the 1 watt 10k ohm resistor feeding the 1n60 diode, it measures around 18k. But this may be due to other components skewing the reading. > I did find a great thread on QRZed but it was for a "S" version and what hints might apply, did not help. > Anyone have any ideas? I'm stuck! > Thanks!!! > Tom > > > > ______________________________________________________________ > Kenwood mailing list > Home: http://mailman.qth.net/mailman/listinfo/kenwood > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Kenwood at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html From manualman at juno.com Sun Apr 4 00:17:07 2021 From: manualman at juno.com (manualman at juno.com) Date: Sun, 4 Apr 2021 00:17:07 -0400 Subject: [Kenwood] TS-520 No output! Message-ID: Did you do the dip and load as part of the tune up procedure? Did it load up to roughly 200 to 225 ma? When you say, no output, what are you looking at to indicate "no output"? If you want a visual indicator of RF output, connect a 100 watt light bulb across the antenna connector and use the CW mode. Can you hear the rig in another receiver when you transmit? In the SSB mode, if you don't say anything in the microphone, you will get no output? Does the rig work fine in the receive mode? Can you hear stuff? Does the came condition appear on all bands? Pete, wa2cwa www.manualman.com On Sun, 4 Apr 2021 02:36:29 +0000 (UTC) Tom WA9WSJ via Kenwood writes: > Hello Gents, > I'm working with a TS-520, (not the S version), and get zero output, > in all modes. > Going through the manual, step by step, to tune it up into a dummy > load I get all the proper meter indications as described. It will > perform just as the book says but no output! > I've replaced the finals and looked for any burned parts or areas > and nothing. It all looks good. I've followed the rf path from the > coax connector all the way to the load cap and all is good. The path > from the HV source is also good all the way to the plates. > I've deoxed the wafer switches, and the SG switch is in the proper > position and works, I ohmed it. > I've checked and even cleaned the T/R relay contacts but no go. I've > checked the value of fixed caps in the circuit but they are okay. > The only off value part is the 1 watt 10k ohm resistor feeding the > 1n60 diode, it measures around 18k. But this may be due to other > components skewing the reading. > I did find a great thread on QRZed but it was for a "S" version and > what hints might apply, did not help. > Anyone have any ideas? I'm stuck! > Thanks!!! > Tom From cemilton at aol.com Sun Apr 4 07:22:19 2021 From: cemilton at aol.com (cemilton) Date: Sun, 4 Apr 2021 11:22:19 +0000 (UTC) Subject: [Kenwood] TS-520 No output! In-Reply-To: <1882452195.379394.1617503789467@mail.yahoo.com> References: <1882452195.379394.1617503789467.ref@mail.yahoo.com> <1882452195.379394.1617503789467@mail.yahoo.com> Message-ID: <708164262.264595.1617535339234@mail.yahoo.com> Tom, Check C-15. ?The .001/3kv blocking cap. ?If all readings for tune up are normal, then suspect this cap to be OPEN. ?Easiest way is to substitute it with a known good one. ?An open one will not allow RF to the antenna. Good luck. Chuck?W4MIL? Sent from the all new AOL app for iOS On Saturday, April 3, 2021, 10:37 PM, Tom WA9WSJ via Kenwood wrote: Hello Gents, I'm working with a TS-520, (not the S version), and get zero output, in all modes.? Going through the manual, step by step, to tune it up into a dummy load I get all the proper meter indications as described. It will perform just as the book says but no output! I've replaced the finals and looked for any burned parts or areas and nothing. It all looks good. I've followed the rf path from the coax connector all the way to the load cap and all is good. The path from the HV source is also good all the way to the plates. I've deoxed the wafer switches, and the SG switch is in the proper position and works, I ohmed it.? I've checked and even cleaned the T/R relay contacts but no go. I've checked the value of fixed caps in the circuit but they are okay.? The only off value part is the 1 watt 10k ohm resistor feeding the 1n60 diode, it measures around 18k. But this may be due to other components skewing the reading. I did find a great thread on QRZed but it was for a "S" version and what hints might apply, did not help. Anyone have any ideas? I'm stuck! Thanks!!! Tom ______________________________________________________________ Kenwood mailing list Home: http://mailman.qth.net/mailman/listinfo/kenwood Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Kenwood at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html From wa9wsj at yahoo.com Mon Apr 5 19:48:13 2021 From: wa9wsj at yahoo.com (Tom WA9WSJ) Date: Mon, 5 Apr 2021 23:48:13 +0000 (UTC) Subject: [Kenwood] TS-520 No output!...Now all is good! In-Reply-To: <1882452195.379394.1617503789467@mail.yahoo.com> References: <1882452195.379394.1617503789467.ref@mail.yahoo.com> <1882452195.379394.1617503789467@mail.yahoo.com> Message-ID: <559531036.28930.1617666493108@mail.yahoo.com> Hello to all that responded! A BIG THANK YOU for all the wise suggestions. It stinks getting old! It was my own operator malfunction that made me think it had a problem when it was me that did!?The rig is fine and works as it should.?I had grabbed the wrong feed line and was not going through all the metering that I thought I was, but rather going straight to the antenna. No wonder it tuned like it should and the bridge/watt meter were dead!? Won't be making that mistake again!!! Thanks again for all the suggestions. Tom PS. I feel dumb but wiser now. :) ______________________________________________________________ Kenwood mailing list Home: http://mailman.qth.net/mailman/listinfo/kenwood Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Kenwood at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html From k3ac at aol.com Mon Apr 5 19:59:48 2021 From: k3ac at aol.com (k3ac) Date: Mon, 5 Apr 2021 23:59:48 +0000 (UTC) Subject: [Kenwood] TS-520 No output!...Now all is good! In-Reply-To: <559531036.28930.1617666493108@mail.yahoo.com> References: <1882452195.379394.1617503789467.ref@mail.yahoo.com> <1882452195.379394.1617503789467@mail.yahoo.com> <559531036.28930.1617666493108@mail.yahoo.com> Message-ID: <1868344228.2389537.1617667188344@mail.yahoo.com> Tom,Glad you figured out the problem.?When troubleshooting a transmitter it?s best to use a dummy load, ideally one with a built in wattmeter, going directly from the rig to the dummy using a short straight coax jumper. That avoids causing any interference on the bands and eliminates any confusion with coax switches, incorrect??meters, etc.? 73,Bob K3AC Sent from the all new AOL app for iOS On Monday, April 5, 2021, 7:48 PM, Tom WA9WSJ via Kenwood wrote: Hello to all that responded! A BIG THANK YOU for all the wise suggestions. It stinks getting old! It was my own operator malfunction that made me think it had a problem when it was me that did!?The rig is fine and works as it should.?I had grabbed the wrong feed line and was not going through all the metering that I thought I was, but rather going straight to the antenna. No wonder it tuned like it should and the bridge/watt meter were dead!? Won't be making that mistake again!!! Thanks again for all the suggestions. Tom PS. I feel dumb but wiser now. :) ? ______________________________________________________________ Kenwood mailing list Home: http://mailman.qth.net/mailman/listinfo/kenwood Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Kenwood at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Kenwood mailing list Home: http://mailman.qth.net/mailman/listinfo/kenwood Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Kenwood at mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html