开云体育

Sadly, because stoopid here hasn't used the rig since I got it last
year. The darn thing sat in a box. I should know better: my
philosophy is 'use and abuse' something while it is under warranty -
if it makes it past that date, you should be okay. Even so, how darn
many CBs are there out there that have been pumping 5 watts (or close
to it) into poorly matched antennas for years? I spoke with a tech at
Yaesu yesterday who was very nice and said he had no idea why they
had the influx of rigs needing the repair. He speculated Yaesu had
purchased a bad batch of transistors, but added that they were not
able to cause the finals to fail under laboratory conditions. I guess
the good news is, he said that once the burned out finals were
replaced with the new ones, the repair seemed to take hold and no
such radios came back to the factory a second time.



--- In FT817@..., "cleskie" <cleskie@y...> wrote:

If you only got one QSO from the rig and you know it to be

unmodified,

I assume it is new.
Why would'nt they repair it under warranty?

Chuck KG8ZH
_____________________________________________

--- In FT817@..., "aa8gk" <aa8gk@y...> wrote:

Well, for as much as I spent on the 817, I got only ONE CW QSO

out of

it! I'm mad as a hornet. And, no, I've made NO mods or otherwise
abused the rig. So, I e-mailed Yaesu asking for a quote on

repairs.

Here's what they're sticking:

P/N CB1152001 PA UNIT $266.97 EACH, IN-STOCK
P/N CB1333001 FINAL UNIT 43.88 EACH, IN STOCK
And, this isn't including the labor!

Does anyone know of any reputable place that can do the job?

72 N QRT, DE AA8GK

P.S., I may have a great little portable MF-UHF Yaesu receiver

for

sale here soon!

That $300+ repair really sucks, considering many of us got the radio
brand new at Dayton for $499.99.



PERRY wrote:

If you only got one QSO from the rig and you know it to be unmodified,
I assume it is new.
Why would'nt they repair it under warranty?

Chuck KG8ZH
_____________________________________________

--- In FT817@..., "aa8gk" <aa8gk@y...> wrote:

Thanks, Mike! The e-mail I got from Yaesu was steering me away from
doing it myself. I will check out that file. Thanks for your help!

72!
Pete, AA8GK



--- In FT817@..., "Mike Richter" <m.richter@b...> wrote:

Replacing FT817 finals is pretty easy - screwdriver, soldering-

iron,

multimeter. In the FILES section, have a look in

the "Technicalities

and Repairs" and "Repairs" folders for detailed instructions.

You only need to buy the Final Unit.

People have replaced just the Final FETs, but it is much more
difficult and not much cheaper. The only alignment required in

either

case, is to set the Idle Current.

Mike VK2BMM


--- In FT817@..., "aa8gk" <aa8gk@y...> wrote:

Well, for as much as I spent on the 817, I got only ONE CW QSO

out

of

it! I'm mad as a hornet. And, no, I've made NO mods or

otherwise

abused the rig. So, I e-mailed Yaesu asking for a quote on

repairs.

Here's what they're sticking:

P/N CB1152001 PA UNIT $266.97 EACH, IN-STOCK
P/N CB1333001 FINAL UNIT 43.88 EACH, IN STOCK
And, this isn't including the labor!

Does anyone know of any reputable place that can do the job?

72 N QRT, DE AA8GK

P.S., I may have a great little portable MF-UHF Yaesu receiver

for

sale here soon!

HI Pete

I replaced my transistors last year wasn't too bad..then I found out
the $43 bd was avalible..that would be a piece of cake...I would get
the cb1333oo1 final unit and do it your self..I think its three
solder connections and two screws..73 Perry

Thanks, Mike! The e-mail I got from Yaesu was steering me away from
doing it myself. I will check out that file. Thanks for your help!

72!
Pete, AA8GK



--- In FT817@..., "Mike Richter" <m.richter@b...> wrote:

Replacing FT817 finals is pretty easy - screwdriver, soldering-

iron,

multimeter. In the FILES section, have a look in

the "Technicalities

and Repairs" and "Repairs" folders for detailed instructions.

You only need to buy the Final Unit.

People have replaced just the Final FETs, but it is much more
difficult and not much cheaper. The only alignment required in

either

case, is to set the Idle Current.

Mike VK2BMM


--- In FT817@..., "aa8gk" <aa8gk@y...> wrote:

Well, for as much as I spent on the 817, I got only ONE CW QSO

out

of

it! I'm mad as a hornet. And, no, I've made NO mods or otherwise
abused the rig. So, I e-mailed Yaesu asking for a quote on

repairs.

Here's what they're sticking:

P/N CB1152001 PA UNIT $266.97 EACH, IN-STOCK
P/N CB1333001 FINAL UNIT 43.88 EACH, IN STOCK
And, this isn't including the labor!

Does anyone know of any reputable place that can do the job?

72 N QRT, DE AA8GK

P.S., I may have a great little portable MF-UHF Yaesu receiver

for

sale here soon!

Replacing FT817 finals is pretty easy - screwdriver, soldering-iron,
multimeter. In the FILES section, have a look in the "Technicalities
and Repairs" and "Repairs" folders for detailed instructions.

You only need to buy the Final Unit.

People have replaced just the Final FETs, but it is much more
difficult and not much cheaper. The only alignment required in either
case, is to set the Idle Current.

Mike VK2BMM


--- In FT817@..., "aa8gk" <aa8gk@y...> wrote:

Well, for as much as I spent on the 817, I got only ONE CW QSO out

of

it! I'm mad as a hornet. And, no, I've made NO mods or otherwise
abused the rig. So, I e-mailed Yaesu asking for a quote on repairs.
Here's what they're sticking:

P/N CB1152001 PA UNIT $266.97 EACH, IN-STOCK
P/N CB1333001 FINAL UNIT 43.88 EACH, IN STOCK
And, this isn't including the labor!

Does anyone know of any reputable place that can do the job?

72 N QRT, DE AA8GK

P.S., I may have a great little portable MF-UHF Yaesu receiver for
sale here soon!

There are a few things to test before and after replacing the finals. This
testing should be done to determine if the finals, or an earlier stage, are at
fault, and to ascertain the correct bias and drive levels of the new finals,
as well as determining that all is ok with the rest of the radio, so that the
parts replaced will enjoy a LONGER life.--Yes, you can just replace the final
board without checking anything, and if you are lucky, it will work, but why
not try to reduce chances that you will replace the wrong thing, or that the
problem will recur?-----73, KC3VO--Bob.

Well, I am really sorry for you. The prices Yaesu charges for the
replacement boards are disgusting.

That brings another question, to anyone who ever had the finals go.

Does the PWB (or other components) burn, typically, when the finals go?

i.e: is there really a need to replace the entire PWB assembly, or could the
power devices themselves be replaced?

I would understand Yaesu not wanting to bother replacing the devices
themselves, because the board probably would need to be tuned for optimum
performance on all the bands, and they may not have the expertise and/or
equipment to do that in the US, but considering the price of the board, if
it were me, I would not mind saving a bundle by replacing the devices
themselves, even if I loose a little bit of power on the higher bands.

Of course, if the PWB is fried, that's not an option.

Didier/KO4BB

Well, for as much as I spent on the 817, I got only ONE CW QSO out of
it! I'm mad as a hornet. And, no, I've made NO mods or otherwise
abused the rig. So, I e-mailed Yaesu asking for a quote on repairs.
Here's what they're sticking:

P/N CB1152001 PA UNIT $266.97 EACH, IN-STOCK
P/N CB1333001 FINAL UNIT 43.88 EACH, IN STOCK
And, this isn't including the labor!

Does anyone know of any reputable place that can do the job?

72 N QRT, DE AA8GK

P.S., I may have a great little portable MF-UHF Yaesu receiver for
sale here soon!

Would you say its probably safer to use a battery instead of hooking the radio up to a power supply?I have used powerpoles to hookup one set of terminals to the battery to keep it trickle charged and then another connector to the radio from the battery and had no problem until I tried to tune it up to my homebrew buddipole using a regulated power supply and then the finals blew.

David
Mike Richter <m.richter@...> wrote:
Demetre

The best estimate is that 1% of FT817s have Final failures (mine
included). If the FT817 really had a defective Hi-SWR detector then
50% of FT817's would be failing. (Also see comments from VA2ERY below
on hi-SWR 60-80 times a week)

The FT817 does not have any over-temperature indication or shut-down,
so you do need to be careful if operating at high duty-cycle (FM,
data or speech-processing) when running at a high voltage (greater
than 10 volts) when operating at high air temperatures or when it is
in a case which restricts cooling.

An Ethernet Terminator is not designed to take 5 watts

Plenty of people are using the FT817 with a Linear Amp - I don't
recall any postings here suggesting it will lead to Final failure.

Plenty of people have done the 10 watt mod - have a look at the
number of hits on www.dk.com - there are no replies suggesting that
this will lead to failures.

There has been no explanation from Yaesu as to the cause of the
failures - so I am not surprised that dealers allocate the blame
somewhere else.

Mike VK2BMM

===============================================
From: "miracleantenna <lebloke@n...>" <lebloke@n...>
Date: Wed Jan 29, 2003 4:12 am
Subject: Re: RF EVERYWHERE
Greetings all...

Certainly using a small rig-mounted antenna such as the Miracle
Whip, ATX, Maldol of MP-1 will bring lots of RF close to the radio.
But
does this predispose the PAs to failure? Our experience suggests
otherwise...

We have built and tested over 3,000 Miracle Whips - every single one

has been tested at full power on all bands on the same single 817,
purchased in December 2001 (I suppose this makes it a more-or-less
early-issue machine.) Our standard test set-up does not include any
additional groundplane or counterpoise for the rig or antenna.

In spite of our official policy of not switching the MW setting
under power while testing, I've observed our techs doing this
repeatedly
(whenever I see this I remind them that I'll hold them responsible
for any failures this creates.) We go through these procedures on an
average of 60-80 times per week! The rig then frequently sees heavy
weekend operations on FM, CW, SSB and PSK, all with the MW and,
usually, no counterpoise.

I would consider this severe service for any radio, yet we've never
had a PA problem and our 817 still puts out the full 5 watts on all
HF bands (and about 4.0 on VHF/UHF, which is all it ever did).

We've had no reports whatsoever from either dealers or clients
suggesting that they've had PA failures that they believe are
associated with the MW.

My conclusions are that a) Our 817 is extremely robust and has no
weakness in the PA (or anywhere else, for that matter) and b) the
use of a rig-mounted antenna is not a problem.

Of all the suggestions I've seen regarding PA failures I'm
personally most leery of switching transients when turning an
external power
supply off and on while connected to the radio, and the possibility
of PA oscillations under low-voltage conditions. Both of these can be
nearly impossible to perceive unless you're really looking
specifically for them, and both are notorious killers of final
transistors or FETS.

Then again, as has been pointed out over and over, the failure rate
for 817's may not really be any greater than for any other radio -
we may just hear about them more because of this and other lists.

Have fun! - Robert VA2ERY


===============================================

--- In FT817@..., "Demetre Koumanakos" <sv1ens@p...>
wrote:

Hi all,
I ordered a FT817 yesterday, should be getting it next
Saturday,
while in the shop was talking to the dealer who is also a
friend, he
told me that the RF board problem is known to him, but in
most cases
it was the operator to blame. the First reason for the
blowout is
high SWR (817 has not SWR protection) either from selecting
the wrong
antenna jack and transmit without an antenna or from a
poorly tuned
antenna. The second reason is to mod the radio for full
power, the
lack of sufficient cooling will fry the FETS. the Third
reason is the
use of low quality linear amps. the RF feedback from even
the lowest
SWR blows the RF board.
No mistery blowouts were reported localy...

Here are a few tips to prevent a possible human error
blowout:
1)Always use a dummy load (ethernet terminator would be
fine) on the
antenna jack that is not used.
2)Don't mod the radio for more power, this is a QRP rig, the
risk is
not worth it.
3)Don't use linear amps, again this is a QRP rig.
4)Make sure your SWR is within the 817 operating limits.

73
Demetre - SV1ENS

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--- In FT817@..., chris <mouse@u...> wrote:

When I got my 817 in january I didn't get a wall wart. I check in

the

manual, the wall wart is extra. In the front of the manual lists

with

drawing all parts that are stock and you whould have gotten in the

box

The FT-817 comes with a:
Power cord
"AA" battery holder
strap
manual
and a 3-piece 6meter, 2meter & 70cm antenna

at the time that I bought my FT-817, Yaesu had put together an additional kit which you could purchase with the radio for an additional amount of money which included:

nicad battery pack
Nicad charger (wall wart)
vinyl case
and DTMF microphone.

The people who are talking about the wall wart are the people who bought their radio and also bought the extra Yaesu accessory package (while it was available).

I hoope that this answers any questions.

Russ NF7V

Come to think of it--maybe I did not get the wall wart with it. I think I already had on for my old FT50RD HT, and have two for a VX5R (a buddy ran over this VX5R smashing it so he gave me his charger).

The wall wart is not powerful enough to power the rig in TX other than at lowest power setting, but even this is not recommended. It is sufficient to provide charging for internal packs while listening to the rig.
Rudy Marcelletti, K8SWD

This may have changed - when I got mine about a year ago, it came
with a wall wart IIRC.

The purpose of the wall wart was *only* charging. It is not
recommended for powering the radio.

-JohnT (KB5HWS)

--- In FT817@..., chris <mouse@u...> wrote:

When I got my 817 in january I didn't get a wall wart. I check in

the

manual, the wall wart is extra. In the front of the manual lists

with

drawing all parts that are stock and you whould have gotten in the

box

When I got my 817 in january I didn't get a wall wart. I check in the
manual, the wall wart is extra. In the front of the manual lists with
drawing all parts that are stock and you whould have gotten in the box

YAESU Bonus Pack - (All items are NEW)
============================
YAESU Cap (Black with Gold Lettering)
YAESU Wall Map (28.5" x 40")
YAESU Logbook ( 8.5"x 11" - 45 pages)

* Plus - Radio Amateur Call Book - CD (winter 2002)

$27 Cdn. ($20US) plus shipping

More info:

-----------------------------------------------------
73 . . Ken - VE5KC

Both the UK and the US have 5 spot frequencies at 5MHz allocated to
the amateur service (UK for experimentation only). One frequency,
5403.5kHz is common to both countries. Hence the interest in 5MHz. A
search through these archives will uncover a lot more info.

73 Ian G4FSU

--- In FT817@..., "grogers22" <grogers22@y...> wrote:

gday, what is the talk about 5 mhz on ft817, [not alaska freq],

did

somebody get the 5 mhz band?, cheers graham vk6ro

gday, what is the talk about 5 mhz on ft817, [not alaska freq], did
somebody get the 5 mhz band?, cheers graham vk6ro

I am using this type of rechargable batteries for FT817
more than 2 years since I have got FT817.
I believe many people do so.
As a matter of fact, no one can insure the use of
NiCD but it is very practical as well.

I use NiMH cells with standard holder(without mod.).
I do not use internal charging function because
it has too slow charging rate to use
with recent high capacity cells.

JA4AZS Ken