Hi all
Problem fixed. As I thought poor electrical contact on the inter-board
connections,. which was expected due to the Transceivers age me moving
it 300 miles, and it not having been moved for a while.
I also changed the bulb.
I must say that when I compare it to my 756ProII and my 751A the Corsair
seems a much better performer.
I am impressed !
Cheers all
Adrian MW1LCR / GW9X
On 10/03/2013 16:41, GARY HUBER wrote:
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@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.
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