It doesn't matter if you power down the supply first, I do that all the 
time.  The one in my car restarts itself everytime the engine is 
started.  You can just write the new frequency over the old memory, 
don't have to delete anything.  Make sure it says 144 whatever.  press 
the tone button, third from the left along the bottom until you get a 
low beep.  Open the squelch, counter clock wise and turn up the volume 
to see if you get squelch noise.  That is the first test I'd try.  You 
could also press the wx button and it should scscan and pick up weather 
channels in your area.
Good luck.
73
Butch
WA0VJR
Node 3148
Wallace, ks.


On Sat, 24 May 2014, Linda C. Knight wrote:

>
>
>
>
> Hi all,
>
>
>
> I turned on the radio (TMV71A this morning and discovered I am not
> receiving.
>
>
>
> Right now, I can receive/transmit on the 443.450.
>
>
>
> However, I can't receive on the 146.0670.
>
>
>
> Could I have inadvertently knocked out something or pressed a button.
>
>
>
> Another possibility, I was on the 146.070 the other day and I accidently
> turned off the power supply before I turned off the radio and I realized my
> mistake and turned it back on and then turned it off the correct way.
>
>
>
> Could I have corrupted the frequency?
>
>
>
> How can I delete the frequency and put it in again. This frequency has no
> tone.
>
>
>
> Thank you.
>
>
>
> Hugs and 73
>
> Linda C. Knight & shirley
>
> Ham Radio Operator CallSign: kk4hrg
>
> Please note email:
>
> [log in to unmask]
>
>
>
>