开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育
  1. FT-857
  2. Topics

No power

 

Hi,

All of the sudden my ft857d won't power on.?

I already checked. Front Panel is OK. Voltage is OK as well going into the board inside.

Any idea what went wrong??

Thanks,

Edward?
4F1OZ
 

Edward,

Time to locate your schematic diagram. Find the point where power entres the radio, search for a fuse, it will most likely be noted as a 0 (zero) ohm resistor. Now you need to consider WHY the radio stopped working.

Good luck with the repair.
Don't be afraid to send it to a repair shop.

73
John
VE7KKQ


On Mon, Sep 9, 2024 at 9:01?AM Edward Soriano via <docward87=[email protected]> wrote:
Hi,

All of the sudden my ft857d won't power on.?

I already checked. Front Panel is OK. Voltage is OK as well going into the board inside.

Any idea what went wrong??

Thanks,

Edward?
4F1OZ
 

开云体育

Hi..same thing happened to me, after a power surge from a nearby lighting strike...fried the 857, the laptop and display and the Digimode interface....as well as a couple indoor floods and one garage door opener...

Ron WA8KQF

On 9/9/2024 11:00 AM, Edward Soriano via groups.io wrote:

Hi,

All of the sudden my ft857d won't power on.?

I already checked. Front Panel is OK. Voltage is OK as well going into the board inside.

Any idea what went wrong??

Thanks,

Edward?
4F1OZ
 

I am using it mobile and vehicle was in the garage only. No antenna attached when this happened.?

Thanks?


On Tue, 10 Sept 2024 at 2:34 am, Ron
<rschunk09@...> wrote:

Hi..same thing happened to me, after a power surge from a nearby lighting strike...fried the 857, the laptop and display and the Digimode interface....as well as a couple indoor floods and one garage door opener...

Ron WA8KQF

On 9/9/2024 11:00 AM, Edward Soriano via groups.io wrote:
Hi,

All of the sudden my ft857d won't power on.?

I already checked. Front Panel is OK. Voltage is OK as well going into the board inside.

Any idea what went wrong??

Thanks,

Edward?
4F1OZ
 

I? had the same thing happen to two of my ft radios.? Connecting and disconnecting a battery charger or battery maintainer
can create an arc necessary to short out the surge suppressor that is across the power input line inside the unit.
Replaced the suppressor and things worked as they should.

Erv
wa0fbx


On Mon, Sep 9, 2024 at 6:35?PM Edward Soriano via <docward87=[email protected]> wrote:
I am using it mobile and vehicle was in the garage only. No antenna attached when this happened.?

Thanks?


On Tue, 10 Sept 2024 at 2:34 am, Ron
<rschunk09@...> wrote:

Hi..same thing happened to me, after a power surge from a nearby lighting strike...fried the 857, the laptop and display and the Digimode interface....as well as a couple indoor floods and one garage door opener...

Ron WA8KQF

On 9/9/2024 11:00 AM, Edward Soriano via wrote:
Hi,

All of the sudden my ft857d won't power on.?

I already checked. Front Panel is OK. Voltage is OK as well going into the board inside.

Any idea what went wrong??

Thanks,

Edward?
4F1OZ
 

开云体育

Hi Edward,

?

Does the power relay briefly click on and straight back off again, because that’s what mine is doing?

?

It’s on the bench at the moment but I haven’t had time to get back to looking into it yet. Too much else to do.

?

73….Eric VK2VE.

?

From: [email protected] <[email protected]> On Behalf Of Edward Soriano via groups.io
Sent: Tuesday, 10 September 2024 01:01
To: [email protected]
Subject: [FT-857] No power

?

Hi,

?

All of the sudden my ft857d won't power on.?

?

I already checked. Front Panel is OK. Voltage is OK as well going into the board inside.

?

Any idea what went wrong??

?

Thanks,

?

Edward?

4F1OZ


Virus-free.
 

No Eric. Completely dead!


On Tue, 10 Sept 2024 at 10:51 am, Eric van de Weyer
<groups.io@...> wrote:

Hi Edward,

?

Does the power relay briefly click on and straight back off again, because that’s what mine is doing?

?

It’s on the bench at the moment but I haven’t had time to get back to looking into it yet. Too much else to do.

?

73….Eric VK2VE.

?

From: [email protected] <[email protected]> On Behalf Of Edward Soriano via groups.io
Sent: Tuesday, 10 September 2024 01:01
To: [email protected]
Subject: [FT-857] No power

?

Hi,

?

All of the sudden my ft857d won't power on.?

?

I already checked. Front Panel is OK. Voltage is OK as well going into the board inside.

?

Any idea what went wrong??

?

Thanks,

?

Edward?

4F1OZ


Virus-free.
 

Dear Ed.
Did you check the original DC connector plug??I had some problems every now and then. I removed it and wired a Power Pole connector. After that I did not have a problem of Power off
VU2TE
Unni

On Mon, Sep 9, 2024 at 8:31?PM Edward Soriano via <docward87=[email protected]> wrote:
Hi,

All of the sudden my ft857d won't power on.?

I already checked. Front Panel is OK. Voltage is OK as well going into the board inside.

Any idea what went wrong??

Thanks,

Edward?
4F1OZ
 

...in the car ?? did you verify the raw voltage ? battery itself ...
car running --- charge voltage ? I think the manual has "power supply
range 12V +- ??
your issue sound like low supply or missing ground (corroded ? ground
conncetion )

On Tue, Sep 10, 2024 at 2:26?AM Easwaran Unni Tharakkal VU2TE via
groups.io <unnitharakkal@...> wrote:

Dear Ed.
Did you check the original DC connector plug? I had some problems every now and then. I removed it and wired a Power Pole connector. After that I did not have a problem of Power off
VU2TE
Unni

On Mon, Sep 9, 2024 at 8:31?PM Edward Soriano via groups.io <docward87@...> wrote:

Hi,

All of the sudden my ft857d won't power on.

I already checked. Front Panel is OK. Voltage is OK as well going into the board inside.

Any idea what went wrong?

Thanks,

Edward
4F1OZ

Yahoo Mail: Search, organise, conquer
 

I had a similar issue in my mobile installation, even tried installing my second FT-857d in the vehicle, thought it may have been a power issue, finally tracked it down to a faulty crimp on the factory supplied RJ12 cable to the control head. Re-crimping fixed it. In my case the rig was in a power cycle loop and had to remove power to shut it down.
 

I had the same thing happen to mine in the car. Replaced the modular cable from the head to body and it has worked fine since... (didnt?have the crimp tool to redo the ends...)

73 and good luck

Art N3GCD

On Wed, Sep 11, 2024 at 6:47?PM vk5ztj via <vk5ztj=[email protected]> wrote:
I had a similar issue in my mobile installation, even tried installing my second FT-857d in the vehicle, thought it may have been a power issue, finally tracked it down to a faulty crimp on the factory supplied RJ12 cable to the control head. Re-crimping fixed it. In my case the rig was in a power cycle loop and had to remove power to shut it down.
 

Exactly what mine does.? Been suggested that for some reason not enough voltage or current from power supply.? ?
 

Hi Edward,? Hope you get back to this soon.? Exactly what my unit is doing. Definitely proved not power supply related.? The relay sounds like it is just not able to pull up and stay up. Slight flicker on display and fans.? It was intermittent for a while, would eventually power up when repeated trying, but no more just clicks,? wait for 30 seconds or so and repeat.
Thanks

1 - 13 of 13