[1000mp] CW click/thump

[Richard Thorne]

John:

Not sure if this is the same problem I had or not.

I picked up a used Mark V recently.  When I had the head phone plugged 
in it would thump very badly.  In addition to that when the cooling fan 
came on a whine began in the headphones.  If I turned the RF all the way 
down it would minimize the problem but it would not totally go away.

I sent it back to Yaesu.  For $140 (which included return shipping) they 
were able to fix it.  Specifically they replaced the following:

G206004 Diode 1SS270TJ FTL-1011H
J24205473 Chip Res. RMC1/10T 473J
K22140811 Chip CAP. GRM40B104M25PT VX-520 0.1UF 25
G3334448E TRANSISTOR 2SC3444-T11-1E FT-1000MP
L1190393 COIL RCR-875D-331K

The parts added up to $3.61 the remaining was for labor 1.5hours and $32 
for shipping.

The surprising thing about the experience was the turn around time. 
They received it on a Friday and billed my credit card the following 
Wed. and received the rig the following Monday.  So I was only without 
the rig for about a week and a half.  This took place last month.

Rich - N5ZC

----- Original Message ----- 
From: "John" <w3uls at 3n.net>
To: <1000mp at mailman.qth.net>
Sent: Thursday, May 05, 2005 3:41 PM
Subject: [1000mp] CW click/thump


> My new Mark V Field  has annoyingly loud clicks/thumps in the audio on 
> every "break" when sending QSK and after the delay in sending 
> semi-break-in. The only way to get rid of these is to turn down the AF 
> Gain control, which of course defeats the purpose of QSK.
>
> Previous Mark Vs I've owned had this to a lesser extent, and an FT-920 
> I now own also exhibits the same clicks/thumps, so it's a Yaesu thing. 
> Does anyone have a fix? Somewhere the audio is picking up something it 
> shouldn't. (I have the linear relay switch on the back set to "off.")
>
> I would love to hear of a solution, because otherwise this is a fine 
> rig (see my eHam.net review of 4/30/05).
>
> Masny thanks for reading.
>
> 73,
> John, W3ULS
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