[TenTec] corsair 1

[Bwana Bob]

Snowy,

I had a shorted bypass capacitor on the counter board on my Corsair that 
was messing up the logic that tells the counter what band its on.

73,

Bob WB2VUF


On 3/28/2017 11:38 AM, ROLAND HOWELL wrote:
>   Hi All, some help from you learned gents out there please.I recently found a faulty Corsair 1 in my loft, couldn't remember how long its been there, so I decided to try and resurrect it.sorting through a couple of problems pertaining to the readout of certain bands, it covers 1.8mHz thru' to 29.5mHz.Readout on the following bands is correct:-1.8, 3.5, 7, 21, 24.5, 28 - 29mHzbut on the following bands it is totally wrong:switch on 10mHz, display reads 28mHz-----"-----   14mHz, display reads 96mHz-----"-----   18mHz, display reads 27mHz-----"-----    29.5mHz, display reads 1.5mHzI initially thought the crystals in the osc/mixer had been put in the wrong order, but I have the user manual and the picture of the osc pcb shows most of the crystal numbers so I refitted them in that order.It didn't make any difference to the readout.I injected a signal into the radio of 29.5mHz, turned the selector switch onto that band and tuned the radio to 1.5mHz, there was the signal, so it appears that the radio is on frequency and it is just the readout that is wrong.I opened up the display module and checked the diode component orientation to the picture in the manual, seems ok, however I have a revision A time-base board which is NOT shown in the book. So the question is ( yes I finally got around to asking it hi hi), would the diodes on the display boards cause the erroneous readings either O/C or S/Cthanks for your time and patience in reading thru' this.73, snowy, g0hze
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