SDS200 Hum > External Speaker

[dancrosoft]

Does anyone know a way to reduce/eliminate the hum when using an external speaker?

My 200 is new and came with the noise ground part preinstalled. Hum is barely noticeable via the internal.

(Could grounding the speaker to the case help?)

 

[slicerwizard]

Properly fixing the internal grounding fault would be the way to go.

 

[ve2mel]

i'm in same position of you. I open my sds-200 and remove lake around the screw on face board and all noise is out.
I make this: SDS200 - My SDS200 HUM fix

 

[dancrosoft]

i'm in same position of you. I open my sds-200 and remove lake around the screw on face board and all noise is out.
I make this: SDS200 - My SDS200 HUM fix

You sir are amazing. I am gonna attempt this now! Will report back soon.

 

[dancrosoft]

I did not see any lacquer on those screws. I am going to try soldering another ground this weekend.

 

[dancrosoft]

On a side note - shame on Uniden for not catching this issue during QA.

 

[StaticDischarge]

I did not see any lacquer on those screws. I am going to try soldering another ground this weekend.

There is no lacquer "on" the screws, it is the board coating UNDER the screw heads...
Notice the shiny copper where the screws would be.. This is what you are after if you perform my "hum fix"...

 

[srpawski]

There is no lacquer "on" the screws, it is the board coating UNDER the screw heads...
Notice the shiny copper where the screws would be.. This is what you are after if you perform my "hum fix"...

Is this still working out for you?

 

[buddrousa]

It is still working for all that done the modification.

 

[srpawski]

It must be a permanent fix, then.

 

[buddrousa]

It has worked for everybody that has had the problem

 

[srpawski]

I have an SDS200 coming supposedly Friday. Just trying to get an idea what to look for if it doesn't seem right. Thanks.

 

[buddrousa]

If you look Amazon sells the 4 way tool to remove the knobs.

 

[srpawski]

Is it either of these?

Amazon.com: Tenq X Key for Radio Repair Tool for Px-777 Px-888 Px-328 Gp-328 Gp-88: GPS & Navigation

Buy Tenq X Key for Radio Repair Tool for Px-777 Px-888 Px-328 Gp-328 Gp-88: Electronics - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

Amazon.com: AOER Silver X-Key Repair Tool Destuffing for Two-Way Radio Walkie Talkie Motorola GP-300 GP-88 GP-328 GP-328plus Puxing PX777(PX-777) PX-777plus PX-328 Baofeng UV-5R WOUXUN HYT TYT PUXING Radio: Home Audio & Theater

Amazon.com: AOER Silver X-Key Repair Tool Destuffing for Two-Way Radio Walkie Talkie Motorola GP-300 GP-88 GP-328 GP-328plus Puxing PX777(PX-777) PX-777plus PX-328 Baofeng UV-5R WOUXUN HYT TYT PUXING Radio: Home Audio & Theater

www.amazon.com

 

[buddrousa]

Either one should work to remove the front face knobs

Unauthorized modification to fix hum

For me I would rather take on a challenge and see how its done and take on a project and do it and WOW myself once I fixed it. This is all about learning and growing in-stead of being scared and worrying about some warranty issue. Plus the cost of shipping the radio and the time the radio is...

forums.radioreference.com

 

[srpawski]

Well, they look identical and have identical specs as far as which radios they fit and from what the reviews say they are universal, and are identically priced, but figured I'd double check. Thanks.

 

[phask]

Is it either of these?

Amazon.com: Tenq X Key for Radio Repair Tool for Px-777 Px-888 Px-328 Gp-328 Gp-88: GPS & Navigation

Buy Tenq X Key for Radio Repair Tool for Px-777 Px-888 Px-328 Gp-328 Gp-88: Electronics - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

Amazon.com: AOER Silver X-Key Repair Tool Destuffing for Two-Way Radio Walkie Talkie Motorola GP-300 GP-88 GP-328 GP-328plus Puxing PX777(PX-777) PX-777plus PX-328 Baofeng UV-5R WOUXUN HYT TYT PUXING Radio: Home Audio & Theater

Amazon.com: AOER Silver X-Key Repair Tool Destuffing for Two-Way Radio Walkie Talkie Motorola GP-300 GP-88 GP-328 GP-328plus Puxing PX777(PX-777) PX-777plus PX-328 Baofeng UV-5R WOUXUN HYT TYT PUXING Radio: Home Audio & Theater

www.amazon.com

I bought the 2n one and worked fine.

Fix is pretty easy, just keep the instructions nearby. Print or PC. I printed and highlighted the screws, made it easier for me.

 

[srpawski]

Ok, one more question on the lacquer removal - I've seen mentioned in multiple places that instead of scraping the crud off the top to get to the copper, some have inserted star external tooth lock washers in between the screw head and the board to accomplish the lacquer removal. That said, by simply tightening the screw after inserting the washer, has that action alone been enough to cut through the lacquer to make contact, or does one need to loosen and tighten more than once to cut through the lacquer sufficiently to make enough contact? I am concerned about over-tightening or scraping away too much of the copper underneath the lacquer if using the washer heads instead of the scraping method.

 

[VK3RX]

The screws are small so the star washers would also be small, and therefore to me not beefy enough to cut through the lacquer.

Also the screws appear somewhat fragile, so attempting the above risks stripping the head off a screw.

Carefully removing the lacquer by scraping or Dremel to me is the way to go.