[Kenwood] Kenwood Digest, Vol 57, Issue 11

[mark robinson]

ref ts 850, sounds like it could be DC/DC board a known problem with the 850.

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Today's Topics:

1. TS-940 Sub Display (Troy Warren)
2. Re: TS-940 Sub Display (Dennis Younker)
3. TS-850SAT Woes (Chris Kepus)
4. TS-940 Sub Display (Troy Warren)


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Message: 1
Date: Fri, 16 Jan 2009 19:28:49 -0600
From: "Troy Warren" 
Subject: [Kenwood] TS-940 Sub Display
To: 
Message-ID: 
   
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original



I have a TS-940 that has a sub-display lamp that is not lit. How hard is it 
to replace this lamp. I have a 12 volt grain of wheat lamp but it looks like 
quite a job to get to the sub-display. Is this the correct lamp? If not 
where can I get one? Would appreciate any help or tips on getting access to 
the defective lamp.
Thanks, Troy, K5OH 



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Message: 2
Date: Fri, 16 Jan 2009 23:48:08 -0800
From: "Dennis Younker" 
Subject: Re: [Kenwood] TS-940 Sub Display
To: 
Message-ID: 
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original

Are you talking about the meter light (left side) or the green backlight 
(right side)?

The bulb for the right side (green display) is B30-0835-08 and is available 
from Burghardt Amateur Center. I don't think they are 12 volt but I've 
forgotten what voltage they are.

The following was sent to me when I made a similar inquiry:

First remove the top & bottom case. On each side
of the chassis up front you'll see 3 screws . Remove 2, leaving
one as a swivel point for the front. Let the front of the
chassis hang over the workbench. Rotate the front chassis
down, giving you the sight of the LCD. It's not necessary to remove the LCD
since the GREEN LEDs can be removed & replaced from there. Be sure the
LED's you're using are the correct voltage. If not put a resistor in series
with it.



----- Original Message ----- 
From: "Troy Warren" 
To: 
Sent: Friday, January 16, 2009 5:28 PM
Subject: [Kenwood] TS-940 Sub Display


>
>
> I have a TS-940 that has a sub-display lamp that is not lit. How hard is 
> it
> to replace this lamp. I have a 12 volt grain of wheat lamp but it looks 
> like
> quite a job to get to the sub-display. Is this the correct lamp? If not
> where can I get one? Would appreciate any help or tips on getting access 
> to
> the defective lamp.
> Thanks, Troy, K5OH
>
> ______________________________________________________________
> Kenwood mailing list
> Home: http://mailman.qth.net/mailman/listinfo/kenwood
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:Kenwood at mailman.qth.net
> 



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Message: 3
Date: Sat, 17 Jan 2009 01:20:49 -0800
From: "Chris Kepus" 
Subject: [Kenwood] TS-850SAT Woes
To: 
Message-ID: 
Content-Type: text/plain; charset="us-ascii"

I fired up my 850 tonight only to be greeted with some strange behaviors and
odors. Last used on CW on SKN, it performed perfectly. Anyway, tonight was
waaaay different. I tried to get going on SSB but noticed that the rig was
not making normal power (as shown on my power meter) and more perplexing,
showed a rapid drop off in power on key down for several seconds. After a
couple of futile attempts to remedy this problem by "restarting" the rig by
setting up essentially from scratch, I gave up and headed for Google and
QTH.net. Plus there was a faint odor of smoking electronics that wasn't
present prior to turning the 850 on. 



In this list's January archives, I read through the messages in a thread
about a very similar sounding problem in a TS-430S. In one of the
referenced links in this thread, the link began, "Intermittent Drop in Power
Output, Erratic ALC behaviour, SSB distortion: Unless your TS430 has been
in a store room since it was manufactured, you have an appointment with the
vias (PCB through-hole connections) and soldered joints around the PA final
transistors." 



Does anyone know if the 850S final boards are susceptible to this same
problem? The symptoms of a drop in power and erratic ALC behavior were
present (didn't monitor for SSB distortion as I shut it down). 



Any and all comments will be appreciated. I subscribe using the Digest
method of "reading the mail" which means I may not respond as quickly as you
might expect unless you reply directly to me. I do respond to all replies. 



Thanks es 73,

Chris

W7JPG



------------------------------

Message: 4
Date: Fri, 16 Jan 2009 13:53:32 -0600
From: "Troy Warren" 
Subject: [Kenwood] TS-940 Sub Display
To: 
Message-ID: 
Content-Type: text/plain; charset="iso-8859-1"

I have a TS-940 that has a sub-display lamp that is not lit. How hard is it to replace this lamp. I have a 12 volt grain of wheat lamp but it looks like quite a job to get to the sub-display. Is this the correct lamp? If not where can I get one? Would appreciate any help or tips on getting access to the defective lamp.
Thanks, Troy, K5OH

------------------------------

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End of Kenwood Digest, Vol 57, Issue 11
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