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Re: Blown final club? I think I have a membership


 

I have attached a picture of the final board (front and rear view). I have done a lot of radio repairs and soldering in my career and I'm not sure I would even know where to start to remove the final from this board. This is a failed final from an early FT-817 (Non ND).

Pat, WA3UOE

On 8/6/2024 1:27 PM, D. Scott MacKenzie via groups.io wrote:
My soldering skills are really not up to the task. Is there anyone that can do this? Apparently Yaesu wont repair any longer.

Scott aka KB0FHP

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Luis Miguel Casta?eda via groups.io
Sent: Tuesday, August 6, 2024 11:44 AM
To: [email protected]
Subject: Re: [ft817] Blown final club? I think I have a membership


Some third parties still sell the boards... at their prince, which isn't as cheap as they used to be. Also if you're sure that it's just a transistors fault the same mitsubishi that came with my 817ND can be bought relatively cheap from major retailers. IIRC it was 7 euros each about a year ago. Original 817 uses an older model, and a different board which I don't know how easy to find it is.

Anyway isn't an easy soldering job.

my 2c


On Tuesday, August 06 2024, 09:15:29, D. Scott MacKenzie via groups.io wrote:

I have blown finals after I lent to son. I put off getting new finals
board, and now it looks like I have an expensive brick with very low
time on it. I saw some recently say they ordered the boards, and some
say they are unavailable. What is the real story? Is there an
alternative that tossing the 817 in electronics recycling?



From: [email protected] <[email protected]> On Behalf Of Eric van de Weyer
via groups.io
Sent: Tuesday, August 6, 2024 12:12 AM
To: [email protected]
Subject: Re: [ft817] Blown final club? I think I have a membership



Hi Jeff,



You have to remember that there are over a quarter of a million of the
units out there so there are bound to be some failures.



Remember, also, that the early units with the bipolar
transistors were more prone to taking
off under low battery conditions and blowing up the finals due
to there being no load on
them



73….Eric VK2VE.



From: [email protected] <[email protected]> On Behalf Of Jeff WN1MB
Sent: Tuesday, August 6, 2024 6:53 AM
To: [email protected]
Subject: Re: [ft817] Blown final club? I think I have a
membership



On first blush, that appears to be an excessively high mortality
rate. Any thoughts on "the
why" of it all?

On 8/5/24 16:29, Ron Wright via groups.io wrote:

I am on my 3rd PA board for my FT817non-ND I bought around
2004.





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