• Effective immediately we will be deleting, without notice, any negative threads or posts that deal with the use of encryption and streaming of scanner audio.

    We've noticed a huge increase in rants and negative posts that revolve around agencies going to encryption due to the broadcasting of scanner audio on the internet. It's now worn out and continues to be the same recycled rants. These rants hijack the threads and derail the conversation. They no longer have a place anywhere on this forum other than in the designated threads in the Rants forum in the Tavern.

    If you violate these guidelines your post will be deleted without notice and an infraction will be issued. We are not against discussion of this issue. You just need to do it in the right place. For example:
    https://forums.radioreference.com/rants/224104-official-thread-live-audio-feeds-scanners-wait-encryption.html

Icom Problem with icom ic-r9000 tuning wheel

Notescucho

Member
Joined
Mar 5, 2019
Messages
15
Location
Spain
Hello friends. I have an Icom IC-R9000.
It was working well but for some reason I needed to have a look into the tuning wheel and this is what happend:

I disassembled the big tuning wheel.
Then I removed a metal cover.
Then I removed the cogwheel (or gearwheel).
Then I assembled all again without any problem.
Then the tuning wheel started doing strange things: if I turn the tuning wheel to one side sometimes the frequency goes up and other times it goes down.

Can anybody help me?

I attach an image.

Thank you in advance.

Miguel.
 

Attachments

Notescucho

Member
Joined
Mar 5, 2019
Messages
15
Location
Spain
Thank you very much for your reply. It can't be loose because it has three holes that avoid it. What do you mean with binding? Do you suggest that it can be blended? I have no experience with this components.

Thank you.
 

Notescucho

Member
Joined
Mar 5, 2019
Messages
15
Location
Spain
:) Simple: the dial was very hard. I opened it to see if there were any mechanical problem, and now I have two problems. Anyway I think I know were the problem is.

The wheel is very thin. It is very easy to blend. I think I could blend it a bit when I removed it.

There are two solutions: change the wheel (difficult to find), and try to straight it (also difficult).

Thank you for your comments / experiences / suggestions.

Regards
 

majoco

Member
Joined
Dec 25, 2008
Messages
3,196
Location
New Zealand
Did you remove that bit of PC board with the two LED's and opto detectors at the top? See the slots in the disk? Well, the detectors have to be aligned to half the width of one of those slots - then it will be able to detect which way the disk is turning by which one gets covered or uncovered first. You should not have takent the disk off.
 

Notescucho

Member
Joined
Mar 5, 2019
Messages
15
Location
Spain
Hello guys! I also agree, but I didn't know how thin it was. I'm trying to straight the encoder disc. I will tell you what happens.

I removed the tuning knob, I cleaned it, put new oil and now it turns easy as it would.

Let see if the encoder works. I'm trying to straight it with two cristals (see pic).

Regards.
 

Attachments

db_gain

Member
Joined
Sep 13, 2014
Messages
64
Apparently a binding tuning wheel isn't uncommon. Some of them can be brought around by applying some alcohol to the shaft to dissolve the hardened grease, then after drying, apply a few drops of light machine oil and work the tuner to ensure the lubrication gets where it's needed.

Some encoders will need an alignment after some years as part values change, this procedure may be found in a service manual, or you can suss it out via a oscilloscope and screwdriver or other tuning tool.
 
Top