FT817 Half Power !! Replacing the Finals - can it be fixed ?!

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My FT817 had a blown Final Output transistor - this is how I replaced the Finals Board...
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Yaesu FT-817 ND Series PA Finals Board Episode
This 5w QRP transceiver has been around for about 20 years but I've only just discovered it. I think it's brilliant and I want to share with you what I've found out about setting up and using the FT-817ND. In this video I show how I removed and replaced the PA Final Board to get it back to full power.
00:00 Introduction
02:20 Accessing the PA PCB section
03:43 Checking the layout
04:53 Removing the Finals Board
07:54 Fitting the new Finals Board
09:24 Adjusting the current
14:21 Power Test
FT817 Video Series - 4 Videos
Keep a lookout for more videos in this series including these topics:
Setting up the Yaesu FT-817ND QRP Ham Radio for great QRP operation
• Setting up the Yaesu F...
FT817 Power IN : Power OUT !?
• FT817 Power IN : Power...
Installing a Sotabeams Laserbeam Filter to the Yaesu FT-817ND
• Installing a Sotabeams...
FT817 Half Power !! Replacing the Finals - can it be fixed ?!
• FT817 Half Power !! Re...
I'll be making more videos about my radio and electronics projects:
- subscribe to our channel to follow along.
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Links mentioned in the video:
TRX Lab FT817 repair video:
• #119 Repair: Yaesu FT-...
W2AEW FT817 repair video:
• #240: Repair of Yaesu ...
KA7OEI FT-817 Pages:
www.ka7oei.com/ft817pg.shtml
Other great links:
My favourite morse paddle:
Bamatech TPIII Ultra Compact Twin Paddle:
www.bamatech.net/morsetasten/...
Tuning up your QCX+
• Tuning up your QCX+
Measuring RF Power
www.qrp-labs.com/qcxmini/rfpo...
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Q26 Videos by Mortimer Rhind-Tutt

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Опубликовано:

24 июл 2024

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Комментарии : 17

@tav9755 Год назад

Another great Video and it seems that you invested in some very decent recording and lighting equipment. That gives us all hope that we can expect some more of this well prepared content. My FT818 works just fine but I wil keep the Video in mind should a repair be required.

@Steve-GM0HUU Год назад

👍 Glad that the fix worked out. Thanks for posting.

@TheArtofEngineering 7 месяцев назад

Great video ❤. The 817 is such a work horse of a rig.

@trig6712 Год назад

Excellent Many thanks

@mikemiles3068 Год назад

Good video❗️👍73 KV5P

@jdan6102 Год назад

Where did you purchase the finals board? I need to replace mine as well. Thanks for the great video!

@Q26Video Год назад

Glad you liked the video, thanks - board from Radioworld www.radioworld.co.uk/yaesu-finalpa-unit-for-ft-817818-cb1333005 - hope it goes well!

@stephenpadley6684 2 месяца назад

I've got the ft818nd why when I get to about 200 cnl on lsb, or 350 usb, it says TX ERROR

@la7yka 2 месяца назад

You may try transmit of out band?

@user-gd6ww1gp7u 7 месяцев назад

Hi ! I have 2 FT-817nd that put out 3.5w on vhf 144 and 4.6 on uhf 440 ... power meter goe full on uhf and half on vhf when tranmitting . Should i be worried ?

@la7yka 2 месяца назад

Do you have a decent power meter? Many power/swr -meters are not accurate between VHF and UHF. I have tested this radio with a spectrum analyzer, and the output was exactly 5W (FM) on both bands.

@robertbird7297 8 месяцев назад

Hi….would you mind giving me the name of the soldering station as well as the type of solder…lead-free or lead? 73 Rob wd4ift.

@Q26Video 8 месяцев назад

Yes of course - Hakko 951 soldering station (beware of cheap fakes!), with soldering iron FM2028 and Micro soldering iron FM2032. To remove the capacitor I added unleaded (low melt) solder to each side before removing it, to make them melt more easily, but all the solder joints were fixed with unleaded solder. If you are going to do something similar, then my recommendation is to use plenty of flux - it transforms the whole business of soldering. Thanks for watching, hope it was helpful, best wishes from Mort / G4BSK