Re: Hoping for help with an FT-897 (very similar)
The mic connection looks ok, no dirt or anything. Regrettably I don¡¯t have another mic to test with.
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Re: Hoping for help with an FT-897 (very similar)
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Re: Hoping for help with an FT-897 (very similar)
I would look at the mic connection. Try another mic. I think the radio has a modular connector and they get dirty sometimes. You can also call Yaesu. They use to have a support dept there who would talk you through things. Look at the mic first.
K3CLT
Chuck Tobias
On Monday, September 12, 2022 at 03:31:36 AM EDT, dwisby1@... <dwisby1@...> wrote:
Good Evening.
I know this isn¡¯t technically the correct place to post this, but I was hoping that given the similarities between the FT-857 and FT-897.?
I¡¯m having an issue with transmit audio that I¡¯m hoping ya¡¯ll can help with.
Info dump to follow:
A few months ago I did a parks on the air activation with my FT-897d and a wolf river coil antenna. Everything went great but I got a couple of mentions of slightly distorted audio. I have never gotten any complaints on my wire, so I chalked it up to my antenna and moved on.?
Fast forward to this week, while on vacation in Florida I got the same mention from two different operators so I had to do something about it.
In talking things over with my dad, we figured out that when another operator was using my radio on field day he may have changed a setting somewhere that could be causing the distortion. In order to rectify this, I performed a master reset on the radio thinking I could just tweak my settings to get back to where I had it before.
After performing the reset, I have been told that it sounds like a wall of static when I transmit. I have verified this with a WebSDR. I was able to get the signal to where it was intelligible by dropping the gain to 10%, but of course no one can hear me. I have been able to get it to ¡°act right¡± here and there, but it inevitably starts blasting out static within a minute or so.
Is there something damaged somewhere? Or is there some setting that I can¡¯t find.?
Any help at all would be much appreciated.?
Kindly,
David - KI5SHY
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Re: Hoping for help with an FT-897 (very similar)
Guessing this is using FM ...correct?
Sent from my T-Mobile 5G Device
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-------- Original message -------- From: dwisby1@... Date: 9/12/22 3:31 AM (GMT-05:00) Subject: [FT-857] Hoping for help with an FT-897 (very similar)
Good Evening.
I know this isn¡¯t technically the correct place to post this, but I was hoping that given the similarities between the FT-857 and FT-897.?
I¡¯m having an issue with transmit audio that I¡¯m hoping ya¡¯ll can help with.
Info dump to follow:
A few months ago I did a parks on the air activation with my FT-897d and a wolf river coil antenna. Everything went great but I got a couple of mentions of slightly distorted audio. I have never gotten any complaints on my wire, so I chalked it up to my antenna and moved on.?
Fast forward to this week, while on vacation in Florida I got the same mention from two different operators so I had to do something about it.
In talking things over with my dad, we figured out that when another operator was using my radio on field day he may have changed a setting somewhere that could be causing the distortion. In order to rectify this, I performed a master reset on the radio thinking I could just tweak my settings to get back to where I had it before.
After performing the reset, I have been told that it sounds like a wall of static when I transmit. I have verified this with a WebSDR. I was able to get the signal to where it was intelligible by dropping the gain to 10%, but of course no one can hear me. I have been able to get it to ¡°act right¡± here and there, but it inevitably starts blasting out static within a minute or so.
Is there something damaged somewhere? Or is there some setting that I can¡¯t find.?
Any help at all would be much appreciated.?
Kindly,
David - KI5SHY
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Hoping for help with an FT-897 (very similar)
Good Evening.
I know this isn¡¯t technically the correct place to post this, but I was hoping that given the similarities between the FT-857 and FT-897.?
I¡¯m having an issue with transmit audio that I¡¯m hoping ya¡¯ll can help with.
Info dump to follow:
A few months ago I did a parks on the air activation with my FT-897d and a wolf river coil antenna. Everything went great but I got a couple of mentions of slightly distorted audio. I have never gotten any complaints on my wire, so I chalked it up to my antenna and moved on.?
Fast forward to this week, while on vacation in Florida I got the same mention from two different operators so I had to do something about it.
In talking things over with my dad, we figured out that when another operator was using my radio on field day he may have changed a setting somewhere that could be causing the distortion. In order to rectify this, I performed a master reset on the radio thinking I could just tweak my settings to get back to where I had it before.
After performing the reset, I have been told that it sounds like a wall of static when I transmit. I have verified this with a WebSDR. I was able to get the signal to where it was intelligible by dropping the gain to 10%, but of course no one can hear me. I have been able to get it to ¡°act right¡± here and there, but it inevitably starts blasting out static within a minute or so.
Is there something damaged somewhere? Or is there some setting that I can¡¯t find.?
Any help at all would be much appreciated.?
Kindly,
David - KI5SHY
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Re: Keeping the 857D Screen For Long Life
Hi all ? Guy (VK3GUY) at replaced my screen for around $250AUD. ? Theo VK5IR ?
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From: [email protected] <[email protected]> On Behalf Of John P Liddell via groups.io
Sent: Monday, 12 September 2022 6:07 AM
To: [email protected]
Subject: Re: [FT-857] Keeping the 857D Screen For Long Life? Please let us know if you get an answer to this. Excellent thoughts. Thx KK4QFP USA
On Sep 11, 2022, at 1:18 PM, Peter vk3tbn via groups.io <vk3tbn@...> wrote:
?Theo, Could you provide the details of the guy that fixed your display, as I have the same problem VK3TBN ? My understanding is that the zebra stripes issue tends to occur mostly in rigs that have at some stage been installed in cars where they have been heat affected, but perhaps I'm wrong.? I just had my screen replaced here in VK by a guy in Melbourne who specialises is Yaesu repairs and it cost me around $250AUD. ? First, I have a perfectly fine working Yaesu 857D, screen and everything else.? I love it.? I have read several messages over time that people had a failure of their 857 screen and were looking for a replacement. I wonder?? Are there things I can do to lengthen the use of my screen and hopefully prevent failure?
Also? Are there things I should not do that will harm the use of my 857 screen? I Could:
- Set the 857 screen at lower light intensity? - Use a certain color which stresses the screen less or more? - People who specialize at replacing the screen if it fails with "Zebra Stripes" or other problems? ? Sure would would be nice to lengthen the life of my 857D, there are no others like it. Thanks, Peder, W7RPK ?
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Re: Keeping the 857D Screen For Long Life
Please let us know if you get an answer to this. Excellent thoughts. Thx KK4QFP USA
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On Sep 11, 2022, at 1:18 PM, Peter vk3tbn via groups.io <vk3tbn@...> wrote:
? Theo,
Could you provide the details of the guy that fixed your display, as I have the same problem
Regards
Pete VK3TBN On 12 Aug 2022, at 10:58 am, Theo Marinos <marinos.theo@...> wrote:
? My understanding is that the zebra stripes issue tends to occur mostly in rigs that have at some stage been installed in cars where they have been heat affected, but perhaps I'm wrong.?
I just had my screen replaced here in VK by a guy in Melbourne who specialises is Yaesu repairs and it cost me around $250AUD.
Regards
Theo
VK5IR First, I have a perfectly fine working Yaesu 857D, screen and everything else.? I love it.?
I have read several messages over time that people had a failure of their 857 screen and were looking for a replacement.
I wonder?? Are there things I can do to lengthen the use of my screen and hopefully prevent failure?
Also? Are there things I should not do that will harm the use of my 857 screen?
I Could:
- Set the 857 screen at lower light intensity?
- Use a certain color which stresses the screen less or more?
- People who specialize at replacing the screen if it fails with "Zebra Stripes" or other problems?
?
Sure would would be nice to lengthen the life of my 857D, there are no others like it.
Thanks,
Peder, W7RPK
?
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Re: Keeping the 857D Screen For Long Life
Theo,
Could you provide the details of the guy that fixed your display, as I have the same problem
Regards
Pete
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On 12 Aug 2022, at 10:58 am, Theo Marinos <marinos.theo@...> wrote:
? My understanding is that the zebra stripes issue tends to occur mostly in rigs that have at some stage been installed in cars where they have been heat affected, but perhaps I'm wrong.?
I just had my screen replaced here in VK by a guy in Melbourne who specialises is Yaesu repairs and it cost me around $250AUD.
Regards
Theo
VK5IR First, I have a perfectly fine working Yaesu 857D, screen and everything else.? I love it.?
I have read several messages over time that people had a failure of their 857 screen and were looking for a replacement.
I wonder?? Are there things I can do to lengthen the use of my screen and hopefully prevent failure?
Also? Are there things I should not do that will harm the use of my 857 screen?
I Could:
- Set the 857 screen at lower light intensity?
- Use a certain color which stresses the screen less or more?
- People who specialize at replacing the screen if it fails with "Zebra Stripes" or other problems?
?
Sure would would be nice to lengthen the life of my 857D, there are no others like it.
Thanks,
Peder, W7RPK
?
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Re: Keeping the 857D Screen For Long Life
I think that it is possible that the strip that loses connection is "glued" in place with conductive paste and perhaps not soldered.
I have tried to repair one of these with poor results.?
If you have one you might want to get the parts to repair while they are still available.
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Re: Keeping the 857D Screen For Long Life
Kent, you're my kind of ham!!!
I spend more time fixing and doing than holding the microphone.
Although, I was a Novice in the 70s, and still do a little CW.
Keep telling myself I'll do more, especially now that I've restored my Novice HW-16 that I kept all these years!?
I think you and Keith, K9GL are correct -- heat expansion that occurs _just_ the right way can make contacts re-join.
Of course, it's also heat that may have caused the cold solder joints in the first place, as people with rigs in cool conditions have had less problems.
73, Tim KA4LFP
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Re: Keeping the 857D Screen For Long Life
Keith-K9GL
Sounds like you have discovered that the issue is cold solder joints around the QFP chip - assuming here that's the LCD driver chip given the placement.
That's a Quad Flat Pack SOIC chip.
You might have better luck using a true SMD rework station.
Here's the one I have - only $65, and I can tell you that in 40 years, this is the best soldering station I've had,
although I've never sprung for the several-hundreds $$$ some people put down on a high-end Weller rework or Hakko. Good on them for having that budget, I don't.
And - Kapton tape is the heat resistant tape designed for blocking heat from nearby components.
Sometimes you see it used permanently, but as often as not, SMD rework folks use it just temporarily during a repair and then remove it later.
I've not opened my 857D in some time, and not the head unit ever, so I'm not sure if you can lift up that? plastic connecting strip.
If you can, I'd place a stiff piece of cardboard (as you say, cereal box type stuff) on the underside of the chip.
Apply Kapton tape all around it, spacing as you described, or even closer.
You want to leave just the gull-wing leads exposed.
Won't hurt to put a small square of Kapton tape over the center of the IC either.
Then, hold the chip in place with the plastic end of any bench tool you have, pressing down onto the cardboard reinforcer underneath
(assuming here that you can do that, obviously)
Using the smallest diameter tip you can on the 898D's Rework heat gun, reheat the solder joints.
Take away the heat, and leave the pressure on from the? tip of your plastic tool
That technique and good tools might result in NO lines showing back up --?
You can probably review YouTube videos on SMD rework to see the technique, or give yourself other ideas of things that might work better.
Either way -- Kapton tape and a proper SMD rework gun as opposed to a consumer "painting heat gun" is probably going to work way way better.
73, Tim KA4LFP
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Re: Keeping the 857D Screen For Long Life
Those soldered pads are not what the issue is.? You get Zebra stripes from the IC mounted in the middle of the flex cable, see my attached picture.  I have used this procedure multiple times, as I own 7 - FT-857's.??This fix is not magical, as it may not fix all of the Zebra Stripes.? I've waited until my displays are almost unreadable to use this procedure, and all have come back to a useable state, but are not perfect.? A few of the Zebra Stripes will come back within a few days, but it will stabilize after a week or so.? K9GL
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Re: Keeping the 857D Screen For Long Life
Thanks for the insight David,
My 857D is dated to the first lot of "D" models produced.? It has been mobile, all day truck bound sun baked, shack bound, field day, bounced, frozen, and otherwise abused.? It is now hosed in a faraday box just in case we actually experience an EMP rough enough to set us back to cave man status.? Yes I believe that could well happen, but it is looking ever increasingly like it will be a time when I no longer care.? Anyway, my original display does have one single pixel wide vertical streak that has absolutely no affect on the radio operation, ignore it and soon one's eye ignores it almost entirely.? My policy is don't fix anything that isn't broken and in this case this minor display fault isn't anywhere close to "broken." Best to all, Phil / K4PO
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Re: Keeping the 857D Screen For Long Life
Hi Robert,
Would you share the how-to back pack configuration you mentioned of your rig? All the best, Adoni
KG5WHC
Sent from mobile device
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On Aug 12, 2022, at 7:38 PM, Robert Castellow via groups.io <emtbuzz@...> wrote:
?You can try putting you AC as cold as it will go and see if the screen gets better. Or put it in the fridge and see what happens.?
I had mine fixed a few years ago and have had in a backpack since to use on the beach.?
73
Buzz
KD4CXI
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Re: Keeping the 857D Screen For Long Life
I guess you've never had one apart? Did you see my other post about the zebra strips? These electrically conductive rubber pads are usually used to make electrical contact with an LCD module?
Zack W9SZ
If I am allowed to state my opinion - all these highly guessing facts from? a group whose technical knowledge is based
on answering multiple choice? questions to obtain a license lacks basic understanding how LCD is physically connected to the rest of
the circuit. On top of that NOBODY ever posted a picture of the LCD itself on top of the "mother" PCB.
BUT if you ever taken? apart ANY device with LCD - you would find out that there are NO SOLDER? CONNECTIONS.
The LCD "substrate" IS THE CONNECTOR and the physical adherence to the "motherboard" is all that is to?? it.
It is the nature , physics , on the LCD using very little current to operate ,? which? contributes
to the deterioration of the physical pressurized connection.
Now, that is my opinion and it does not change the fact that Yaesu goofed with the design.
My 857 was NEVER mobile , used few times on Field Day and it looks like live zoo - the stripes
come and go...soon to be replaced with a display "piggy backed" on to the RJ45
cable connecting the control head to the main PCB.
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Re: Keeping the 857D Screen For Long Life
If I am allowed to state my opinion - all these highly guessing facts from? a group whose technical knowledge is based
on answering multiple choice? questions to obtain a license lacks basic understanding how LCD is physically connected to the rest of
the circuit. On top of that NOBODY ever posted a picture of the LCD itself on top of the "mother" PCB.
BUT if you ever taken? apart ANY device with LCD - you would find out that there are NO SOLDER? CONNECTIONS.
The LCD "substrate" IS THE CONNECTOR and the physical adherence to the "motherboard" is all that is to?? it.
It is the nature , physics , on the LCD using very little current to operate ,? which? contributes
to the deterioration of the physical pressurized connection.
Now, that is my opinion and it does not change the fact that Yaesu goofed with the design.
My 857 was NEVER mobile , used few times on Field Day and it looks like live zoo - the stripes
come and go...soon to be replaced with a display "piggy backed" on to the RJ45
cable connecting the control head to the main PCB.
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Re: Keeping the 857D Screen For Long Life
Only solder work is on a 4 pin plug¡nothing special
Jack
w4grj
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Re: Keeping the 857D Screen For Long Life
Don't forget about ROHS solder.
Leonard K. Pennock
AD7AS
Those who walk bravely through life, unafraid of loss or failure,
find that they very rarely lose or fail.
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On 9/9/22 12:16, N2PQW - David wrote: I really don't want to be insulting to anyone, but I'm stunned that so much misinformation still exists over this VERY well discussed issue.
I mentioned in a previous post, /g/FT-857/message/52119 , that the true fault has nothing to do with the heat in a vehicle, nor UV rays nor heat from the Sun (not unless the temperature in your vehicle gets high enough to flow solder, usually over 600¡ãF!).
The actual problem is open solder joints between the ribbon cable contacts and the circuit board. These are tiny and thin, basically surface-mount interfaces, but still only solder connections, and not adhesive, little sponges, or magic pixie dust.
The failure might certainly be worsened by vibration, but there have been enough failures on home-based units to rule that out as a primary cause.
Here's a photo of the ACTUAL connections:
/g/FT-857/message/52120
Extending the"life"? I say don't worry about it, do nothing different, use this fantastic and rugged radio anyway you want, and just fix the problem if it occurs (or have it fixed by a pro).
Cheers All,
David / N2PQW
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Re: Keeping the 857D Screen For Long Life
A lot of LCD displays use zebra strips, which are alternating conductive and non-conductive rubbery material. They get their name because the conductive strips are black and the non-conductive ones are lighter. They do not solder to anything. I could not tell if the FT-857 display used zebra strips or not. Thanks for clearing that up.
73, Zack W9SZ
On Fri, Sep 9, 2022 at 2:23 PM N2PQW - David < N2PQW@...> wrote: I really don't want to be insulting to anyone, but I'm stunned that so much misinformation still exists over this VERY well discussed issue.
I mentioned in a previous post, /g/FT-857/message/52119 ,? that the true fault has nothing to do with the heat in a vehicle, nor UV rays nor heat from the Sun (not unless the temperature in your vehicle gets high enough to flow solder, usually over 600¡ãF!).
The actual problem is open solder joints between the ribbon cable contacts and the circuit board.? These are tiny and thin, basically surface-mount interfaces, but still only solder connections, and not adhesive, little sponges, or magic pixie dust.
The failure might certainly be worsened by vibration, but there have been enough failures on home-based units to rule that out as a primary cause.
Here's a photo of the ACTUAL connections:
/g/FT-857/message/52120
Extending the"life"?? I say don't worry about it, do nothing different, use this fantastic and rugged radio anyway you want, and just fix the problem if it occurs (or have it fixed by a pro).
Cheers All,
David? /? N2PQW
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Re: Keeping the 857D Screen For Long Life
I really don't want to be insulting to anyone, but I'm stunned that so much misinformation still exists over this VERY well discussed issue. I mentioned in a previous post, /g/FT-857/message/52119 , that the true fault has nothing to do with the heat in a vehicle, nor UV rays nor heat from the Sun (not unless the temperature in your vehicle gets high enough to flow solder, usually over 600¡ãF!). The actual problem is open solder joints between the ribbon cable contacts and the circuit board. These are tiny and thin, basically surface-mount interfaces, but still only solder connections, and not adhesive, little sponges, or magic pixie dust. The failure might certainly be worsened by vibration, but there have been enough failures on home-based units to rule that out as a primary cause. Here's a photo of the ACTUAL connections: /g/FT-857/message/52120Extending the"life"? I say don't worry about it, do nothing different, use this fantastic and rugged radio anyway you want, and just fix the problem if it occurs (or have it fixed by a pro). Cheers All, David / N2PQW
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Jack W4GRJ
N2PQW - David