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FT-847 only transmitting on FM mode. de: W1SMS

Steven Simons All Messages By This Member #825 To the group; My trusty FT-847 has stopped transmitting on all bands (HF>UHF) on SSB, CW and AM modes. It does work OK on the FM mode - TX audio via mic is OK. I did try swapping the TX & RX filter modules with no change. I also reset the uP using menu #39 without any success. Any suggestions on where to start troubleshooting? Thanks and 73, Steve W1SMS?
Andrew Lenton All Messages By This Member #826 Hi one of your LO's our out of range, check all the TP, there is one that duold be 4 V you may find it is .2. Work through the set up procedure on the AF board. 73 Andrew Get On 10 Oct 2023, at 18:18, Steven Simons <ssimons@...> wrote: toggle quoted message Show quoted text To the group; My trusty FT-847 has stopped transmitting on all bands (HF>UHF) on SSB, CW and AM modes. It does work OK on the FM mode - TX audio via mic is OK. I did try swapping the TX & RX filter modules with no change. I also reset the uP using menu #39 without any success. Any suggestions on where to start troubleshooting? Thanks and 73, Steve W1SMS?
Andrew Lenton All Messages By This Member #827 开云体育 Check TP1003 ? ? If this is out of lock you will only get FM! ? 73 ? Andrew ? ? toggle quoted message Show quoted text From: [email protected] [mailto:[email protected]] On Behalf Of Steven Simons Sent: 10 October 2023 18:18 To: [email protected] Subject: [YaesuFT847] FT-847 only transmitting on FM mode. de: W1SMS ? To the group; My trusty FT-847 has stopped transmitting on all bands (HF>UHF) on SSB, CW and AM modes. It does work OK on the FM mode - TX audio via mic is OK. I did try swapping the TX & RX filter modules with no change. I also reset the uP using menu #39 without any success. Any suggestions on where to start troubleshooting? Thanks and 73, Steve W1SMS?
Steven Simons All Messages By This Member #828 Andrew, Nice to meet you and thanks for the repair tips. I do have a copy of the service manual - which I plan on reviewing prior to performing any adjustments. I'll probe the test points you refer to and see what I find. "stay tuned".... de: W1SMS
Andrew Lenton All Messages By This Member #829 You can download load the manuals on this forum, have a poke about 73 Andrew G8UUG Get On 10 Oct 2023, at 21:14, Steven Simons <ssimons@...> wrote: toggle quoted message Show quoted text Andrew, Nice to meet you and thanks for the repair tips. I do have a copy of the service manual - which I plan on reviewing prior to performing any adjustments. I'll probe the test points you refer to and see what I find. "stay tuned".... de: W1SMS
Andrew Lenton All Messages By This Member #830 Will do Get On 10 Oct 2023, at 21:14, Steven Simons <ssimons@...> wrote: toggle quoted message Show quoted text Andrew, Nice to meet you and thanks for the repair tips. I do have a copy of the service manual - which I plan on reviewing prior to performing any adjustments. I'll probe the test points you refer to and see what I find. "stay tuned".... de: W1SMS

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