[TenTec] Corsair II Display Segments

[GARY HUBER]

Although I had my CORSAIR-II display rebuilt at the electronic shop at work 
in the late nineties (I caused the problem to begin with) I've found the 
display periodically needs to have ALL connections from the display and 
frequency counter removed and reseated one at a time after wiping each 
connector pin with a Q-tip dampened with Cramolin or DeoxIT Gold.  If the 
clean-up does NOT work, then the likely culprits are the electrolytics and 
possibly the transistors of the display driver. The best thing to do is just 
replace them all with new high quality parts. There's nothing special that 
cannot be replaced by a local tech with a steady hand, good technique, and 
good eyes.

I find my Corsair-II display seems to work better when used frequently - 
every day. There was a time when I turned it on just a couple times a year 
(Field Day) and had to clean the display contacts before the operation. Now 
I use it daily for digital operating and its like every five years for 
cleaning the connectors.  YMMV.


73 ES DX,
Gary -- AB9M

-----Original Message----- 
From: Stan Barr
Sent: Sunday, March 10, 2013 3:03 AM
To: mw1lcr at elsasystems.co.uk ; Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Corsair II Display Segments

On 10/03/13 02:16, Adrian Rees (MW1LCR) wrote:
> Hi all
> I have just acquired a Corsair II, and am very impressed with it so,
> far. However, in two of the 7 segment displays, the LED's are not
> lighting. If you think about the digits 2 and 3, its the bottom segment
> in each of them, and in the Tens and Units of MHz.
>
> I am guessing the problem will be either a dodgy connection, or similar
> dry joint type of affair. The previous owner has replaced a number of
> electrolytic capacitors in the display, FWIW.
>
> Apart from the dodgy connection / dry joint is there anything else I
> should consider ?

Mine suffers from this about every 12 months or so.  A poor contact
on the display connector is the culprit (in my case anyway) some
contact cleaner cures it for a while.


-- 
Cheers and 73,
Stan Barr G0CLV GQRP-3369 FISTS-667  g0clv at dsl.pipex.com

"Never leave well enough alone." -  Raymond Loewy
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