Steve,
Those resistance readings are too low, and you will have to find the cause.
What I believe is happening is that the low resistance on the paddle
connections is triggering the circuits to go into a transmit state - and
if that happens, the buttons do not work nor will the encoder change
frequency.
Do you have anything plugged into the key jack? If so, remove it and
remeasure.
Did you make the measurement after the RF Board and the Control Board
had been connected? If so, then those readings are intended to be done
on the RF Board alone.
If still low, check for solder bridges - check RF Board J8 pins 17 and
18 carefully. If there is a large deposit of solder, wich away the excess.
As a last resort, lift one end of R1 and R2 and remeasure the resistance
both at the key jack and at J8 pins 17 and 18 - both should be greater
than 1 megohm. If the key jack is low, you may have a defective key
jack, but if J8 pins 17 and 18 are low, you have a short to another
circuit somewhere. Again, examine the soldering carefully. Solder
sufficient to only fill the thru-plated hole is all that is necessary.
If you have a pile of solder much more than that, wick most all of it
away, it is certain to cause trouble.
Please understand that I have no idea at this time about your soldering
skills (no insult intended), but too much solder and not enough heat are
common builder problems - the solder must flow out onto the solder pad
and the lead, and excess solder will mask a bad connection. Adjust the
soldering station temperature so you can produce a good flow of molten
solder in 2 to 3 seconds.
73,
Don W3FPR
Steve KC8QVO wrote:
> Here are my out-of-spec measurements. Any ideas?
> R1 = 96.4k
> R2 = 96.5k
>
> Both should be >1M. Everthing else in the list checks out (well above the
> lower spec limit).
>
> At this point the rig powers up and gives me the 201 message, switches to
> ELECrAFt, then 7100.00c but the buttons and knobs don't work (the next step
> is to push the display button to see what the voltage reading is, switch
> back to VFO, and spin the VFO knob to observe the frequency change - neither
> the display button or the VFO knob do anything).
>
> Steve, KC8QVO
>
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