[ICOM] Icom IC-251E Tuning Problem

[Dave Wood]

Phil, take the mike off the radio and see if the issue goes away.  73  Dave

On Sun, Mar 22, 2020 at 8:43 PM Phil S <philhss at tpg.com.au> wrote:

> Hello!
> I've got a bit of a problem with an IC251E 2m transceiver which I'm
> hoping that the brains on this reflector might be able to assist with.
> As soon as power is applied, the rig starts to drop in frequency on
> the display as though someone was tuning it. If I turn the VFO to
> increase frequency, it does so, if the upward tuning rate is faster
> than the downward rate. If I tune the VFO to decrease frequency, the
> drop continues and gets faster if the VFO is turned quickly.
> I can lock the frequency by using the lock button but as soon as the
> button is deselected the tuning resumes its tumble downwards as though
> there was an invisible operator tuning the VFO.
> I can transmit and receive without a problem (whilst locked) and the
> frequency display is accurate to the tx/rx frequency.
> The rig does not appear to be scanning as the squelch has no impact
> upon the symptoms and does not halt the frequency drop when the
> squelch opens.
> Changing mode makes no difference and neither does changing VFO
> selection.
> Thinking that an opto detector was at fault, I cleaned around the area
> of the VFO etc internally - but to no avail as the fault continues.
> Any help would be greatly appreciated. I'd hate for the rig to remain
> unused on a shelf until either it, or me, goes SK!
> 73,
> Phil VK4BAA
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