PRO 106 swishing sound

[prowisscan]

Greetings, I have been using my pro 106 for over 10 years now and its been a great workhorse. However, lately it has been producing a swishing sound which is coming through the built in speaker or any other external source that is plugged into the headphone jack. The sound is present when monitoring a strong or modest analog signal, does not happen when listening to a digital signal. This phenomenon occurs usually within a couple of minutes after turning it on. The swishing noise is comparable to when listening to someone transmitting with wind in the background. Any thoughts or advice? Thanks in advance.

 

[jfhtm350]

I remember this being a problem years ago. Can't remember what the problem was but do a search.
Vague memory is wanting to say it is dust in volume knob but don't quote me on that.

 

[jaspence]

Dust in the volume control was a common complaint. A can of electronic tuner spray from Radio Shack was the solution. Since RS is not available anymore in most area, do a check online and you will find several brands of similar sprays.

 

[tvengr]

A dirty volume pot would cause noise in both analog and digital signals. If you run the volume up, is the problem more noticeable?

 

[prowisscan]

Yes, the louder the volume the louder the noise; this only occurs when listening to analog and not in digital. Digital modes like P25 it is not present.

 

[RoninJoliet]

Keep working the volume knob back and forth and see if it starts to diminish, its not a fix but it helps for awhile, i have the same problem.....

 

[tvengr]

If the noise increases with volume, there is a possibility that the vibration from the speaker could be shaking a loose or dirty plug inside the scanner. I would remove the cover and make sure all of the plugs are firmly seated.

 

[jfhtm350]

Maybe my memory is better than I thought. Seems like I remember that the volume pot was a sealed unit and no cleaner could get in.

 

[RoninJoliet]

Yup that was the problem you can't clean the pot