Comments on: Yaesu FT-1000MP Transmit Relay Replacement http://w4ft.com/2010/06/yaesu-ft-1000mp-transmit-relay-replacement/ One ham's skewed view of amateur radio and maybe some other topics along the way. Fri, 24 Feb 2012 14:06:16 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: G.Wynne Evans http://w4ft.com/2010/06/yaesu-ft-1000mp-transmit-relay-replacement/comment-page-1/#comment-477 G.Wynne Evans Wed, 24 Nov 2010 13:29:37 +0000 http://w4ft.com/?p=208#comment-477 W4FT Have a 12 year old FT1000MP. Intermittent transmit, only on 20 m. Decided to swap the TX/RXrelays for 20, on the same board that you have descibed in your article. Yor instructions were just what I needed to get at the relays in question, they are on the same board. They are situated a matter of inches from the relay you were replacing. At this moment I am about to start the unsoldering etc. Just a note of thanks, your article was just what I needed. Many Thanks, Wynne, GW3WWN Neath, South Wales. W4FT

Have a 12 year old FT1000MP.
Intermittent transmit, only on 20 m.
Decided to swap the TX/RXrelays for 20, on the same board that you have descibed in your article. Yor instructions were just what I needed to get at the relays in question, they are on the same board. They are situated a matter of inches from the relay you were replacing.
At this moment I am about to start the unsoldering etc.
Just a note of thanks, your article was just what I needed.
Many Thanks,
Wynne,
GW3WWN Neath, South Wales.

]]> By: Frank Davis http://w4ft.com/2010/06/yaesu-ft-1000mp-transmit-relay-replacement/comment-page-1/#comment-414 Frank Davis Mon, 11 Oct 2010 17:24:08 +0000 http://w4ft.com/?p=208#comment-414 W4FT...my recent post on FT-1000MP Yahoo Groups My venerable Ft-1000mp has started to go silent on all bands. A touch of the key or PTT will bring the rx back to life. If left so some time it starts to go silent again ... like there is 20db of attenuation in line with the antenna. I have tried both A& B coax connectors and the condition persists so I am concluding that the problem is not on the Antenna relay board which is just behind the coax jacks. I suspect T/R relay RL6016 on the LPF board is the cause....probably dirty contacts. Has anyone any further info on this issue that might help me eliminate the problem. 73 Frank VO1HP W4FT…my recent post on FT-1000MP Yahoo Groups

My venerable Ft-1000mp has started to go silent on all bands. A touch of the
key or PTT will bring the rx back to life. If left so some time it starts to go
silent again … like there is 20db of attenuation in line with the antenna.

I have tried both A& B coax connectors and the condition persists so I am
concluding that the problem is not on the Antenna relay board which is just
behind the coax jacks.

I suspect T/R relay RL6016 on the LPF board is the cause….probably dirty
contacts.

Has anyone any further info on this issue that might help me eliminate the
problem.

73 Frank VO1HP

]]> By: w4ft http://w4ft.com/2010/06/yaesu-ft-1000mp-transmit-relay-replacement/comment-page-1/#comment-412 w4ft Mon, 11 Oct 2010 13:58:37 +0000 http://w4ft.com/?p=208#comment-412 Sounds like it might be the same problem, and yet, it sounds like you have more going on. My first advice: the service manual makes things much easier, but you might be able to do the repairs if you're skilled and have the schematics that came with the radio. I'd start by verifying that the same relay has failed. This can be done by taking the tuner circuit out of the signal path and testing. To do this, you need to track down the internal coax connection upstream of the tuner, disconnect it, and connect it to a dummy load. You'll have to open the radio up as described in the main post. Once you have the dummy load attached, set the power output down to zero, switch to CW and key the radio. Slowly turn the power up a little. If the only issue is the bad relay (the black one), then the power meter will come up as you turn the power up and the SWR reading will stay low (maybe not 1:1, but reasonable. If the problem is something else, the SWR will spike and the protection circuit will limit the power inversely to the SWR. You might find that the relay replacement fixes all the problems, is only a partial fix, or has nothing to do with your problems. There are several relays in the system, so if one of the others is bad, I'm not sure what the exact symptoms, or diagnosis for each would be. You'll just have to start isolating problems and circuits until you identify the problem. If you don't feel comfortable doing the work (and don't know a local ham with the right skills), then you should send it out for repairs. I don't know anyone to recommend but have two suggestions. The obvious is to contact Yaesu and ask them. The second (and I prefer) is to check the various yahoo (and other) groups for Yaesu, especially the FT1000MP list servers and ask them for a recommendation or for more advice. One of them is: http://groups.yahoo.com/group/FT-1000MP/ Good luck and let us know how it turns out. 73, W4FT Sounds like it might be the same problem, and yet, it sounds like you have more going on. My first advice: the service manual makes things much easier, but you might be able to do the repairs if you’re skilled and have the schematics that came with the radio. I’d start by verifying that the same relay has failed. This can be done by taking the tuner circuit out of the signal path and testing. To do this, you need to track down the internal coax connection upstream of the tuner, disconnect it, and connect it to a dummy load. You’ll have to open the radio up as described in the main post. Once you have the dummy load attached, set the power output down to zero, switch to CW and key the radio. Slowly turn the power up a little. If the only issue is the bad relay (the black one), then the power meter will come up as you turn the power up and the SWR reading will stay low (maybe not 1:1, but reasonable. If the problem is something else, the SWR will spike and the protection circuit will limit the power inversely to the SWR.

You might find that the relay replacement fixes all the problems, is only a partial fix, or has nothing to do with your problems. There are several relays in the system, so if one of the others is bad, I’m not sure what the exact symptoms, or diagnosis for each would be. You’ll just have to start isolating problems and circuits until you identify the problem.

If you don’t feel comfortable doing the work (and don’t know a local ham with the right skills), then you should send it out for repairs. I don’t know anyone to recommend but have two suggestions. The obvious is to contact Yaesu and ask them. The second (and I prefer) is to check the various yahoo (and other) groups for Yaesu, especially the FT1000MP list servers and ask them for a recommendation or for more advice. One of them is: http://groups.yahoo.com/group/FT-1000MP/

Good luck and let us know how it turns out.

73,
W4FT

]]> By: Telesforo http://w4ft.com/2010/06/yaesu-ft-1000mp-transmit-relay-replacement/comment-page-1/#comment-408 Telesforo Sun, 10 Oct 2010 12:59:04 +0000 http://w4ft.com/?p=208#comment-408 My FT1000-MP is exhibiting the same symptoms as yours'. I have good audio, extremely high SWR and power leds goes all the way to the extreme right meter. No power out as reflected in my Antenna Tuner meter. Sometimes I can hear a popping sound and the signal increase a bit, but I try to transmit and have the same conditions mentioned before. When I turn it off, I can hear a high popping audio sound on the speaker. I might probably can do the changes you performed on yours, 'because I have done a lot of kits, been in ham radio for over 40 years, but these are my questions: 1. What do you think about these symptoms? 2. Would you suggest me a place to send my FT1000-MP for repairs (a trusty place)? Please advice. Tele KP4p My FT1000-MP is exhibiting the same symptoms as yours’. I have good audio, extremely high SWR and power leds goes all the way to the extreme right meter. No power out as reflected in my Antenna Tuner meter. Sometimes I can hear a popping sound and the signal increase a bit, but I try to transmit and have the same conditions mentioned before. When I turn it off, I can hear a high popping audio sound on the speaker. I might probably can do the changes you performed on yours, ‘because I have done a lot of kits, been in ham radio for over 40 years, but these are my questions: 1. What do you think about these symptoms? 2. Would you suggest me a place to send my FT1000-MP for repairs (a trusty place)?
Please advice.
Tele
KP4p

]]> By: W4FT on Amateur Radio » MFJ-434 Voice Keyer setup for the FT-1000MP http://w4ft.com/2010/06/yaesu-ft-1000mp-transmit-relay-replacement/comment-page-1/#comment-273 W4FT on Amateur Radio » MFJ-434 Voice Keyer setup for the FT-1000MP Wed, 21 Jul 2010 18:02:30 +0000 http://w4ft.com/?p=208#comment-273 [...] topic at all. Anyways, with Field Day approaching, combined with the relay problem that I had (see http://w4ft.com/2010/06/yaesu-ft-1000mp-transmit-relay-replacement/ )  I decided to spend some time really digging into this one.  The good news:  I found a [...] [...] topic at all. Anyways, with Field Day approaching, combined with the relay problem that I had (see http://w4ft.com/2010/06/yaesu-ft-1000mp-transmit-relay-replacement/ )  I decided to spend some time really digging into this one.  The good news:  I found a [...]

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