Re: FT-817 almost powers up
Thanks, folks. You¡¯ve given me some good things to check. Will report back. b Bill ACITO | W1PA
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Bill W1PA
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#113254
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Re: FT-817 almost powers up
Hi It has been a while since i read about this sort of fault but i do remember someone saying that there is a common mode filter in the power rail at some point and that with a reverse polarity feed
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Mark
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#113253
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Re: FT-817 almost powers up
Hello, just my experience from this week. After a repair and a mod (SEL encoder, and Sotabeam filter) everything was working fine. A few days later I tried to power up the radio and I wasn't working
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Simone IU3QEZ
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#113252
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Re: FT-817 almost powers up
I would also check D1085 and T1035- If they have gone open then the DC input wouldn't work. Kindest regards, Doug Jackson em: doug@... ph: 0414 986878
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Doug Jackson
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#113251
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Re: FT-817 almost powers up
Yeah the fuse next to the three electrolytics was the first thing I checked. It's conductive.
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Bill W1PA
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#113250
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Re: FT-817 almost powers up
EA4GPZ has a great article on replacing the Internal fuse within the FT817. https://destevez.net/2016/04/replacing-the-fuse-f1002-in-the-ft-817nd/ I damaged my own fuse when I reverse polarised the
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Doug Jackson
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#113249
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Re: FT-817 almost powers up
with power plugged in ? --- yes. If I remove the power and use the battery, the voltage readings seem correct. In the original post I was measuring from the 817 case to the 13.8 line on the main board
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Bill W1PA
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#113248
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Re: Beginner's Guide to HF Amateur Radio- Week 2- HF Radios & Antennas
Here is link to the recording- https://youtu.be/dH5gsA1CZSc
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Anthony Luscre
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#113247
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Re: Beginner's Guide to HF Amateur Radio- Week 2- HF Radios & Antennas
Unfortunately, the message of the passcode change to RATPAC did not get out to everyone - ratpac.us/zoom [email protected]> wrote:
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Anthony Luscre
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#113246
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Re: Beginner's Guide to HF Amateur Radio- Week 2- HF Radios & Antennas
Hi Anthony;? No way was I able to log into the 2nd week of Zoom; first week, no problem.? It kept asking me for the password which I understood as "WEDNESDAY".? But I will plan on watching it on
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Karl Schwab
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#113245
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Re: FT-817 almost powers up
b, Is the VOM reading with the power connector plugged into the FT817. If you do then I would think the connector has lost it's connection to the FT817 ground/neg supply connection.? If not in the
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Ron Wright
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#113244
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Re: FT-817 almost powers up
Hello Bill I do not have a circuit (schematic) for the 817 here but I do know that the much earlier FT290 and FT690 had a reverse polarity diode in the negative pole of the DC power connector. If the
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Denis Brown VK6AKR
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#113243
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Re: FT-817 almost powers up
Also, what fault would cause a VOM voltage reading of 13.8V from the DC barrel (-) to the 817 metal case?? (same radio)? Do I have a shorted cap? b
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Bill W1PA
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#113242
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Beginner's Guide to HF Amateur Radio- Week 2- HF Radios & Antennas
Beginner's Guide to HF Amateur Radio- Week 2- HF Radios & Antennas watch the recording now- https://youtu.be/dH5gsA1CZSc Join us live for week 3 Oct 26- http://www.ratpac.us/zoom View Week 1 Recording
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Anthony Luscre
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#113241
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FT-817 almost powers up
I have a 817 I am working on that I picked up at a flea. * on battery, when POW-ON the display briefly starts (solid pattern on LCD) and shuts off (and I hear a relay click) * on external power, the
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Bill W1PA
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#113240
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Re: Chinese FT-817 TCXO?
James, Thanks For The Information, Nice low cost Method.? Checked My Two FT-817 and I am Happy That The 4 year old China TCXO are Still in Specification, On the Other Hand the recently "Purchased "
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Steve Sawicki
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#113239
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Re: Watch "Testing Chinese HF linear amplifier DIY kits 70W SSB linear HF Power Amplifier For YAESU FT-817 KX3" on YouTube
Thanx Douglass.
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Doc Sarvis
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#113238
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Re: Any reviews?
I found the build video. 70 Watt Amplifier Kit Build | | | | | | | | | | | 70 Watt Amplifier Kit Build | | | Looks like a decent kit. I think I'll go for it and get one. Thanx for all the replies and
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Doc Sarvis
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#113237
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Watch "Testing Chinese HF linear amplifier DIY kits 70W SSB linear HF Power Amplifier For YAESU FT-817 KX3" on YouTube
https://youtu.be/FSfFhoQr0c8
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Douglas Richards <ve3ffr@...>
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#113236
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Re: Any reviews?
A link would have been nice... Ken, N2VIP
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Ken N2VIP
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#113235
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