iFixit - Answers With Device "Sennheiser RS120"

Sennheiser RS120: light on transmitter. I am not receiving any light indicator on new ph

Tue, 12 May 2026 22:25:41 -0700

new purchase rs120./ indicator light to show battery charging is not showing red or green

Sennheiser RS120: We get the red light, but not the green light, and we get static

Thu, 25 Dec 2025 08:34:08 -0700

WE do not get green light and just static. Is there anyway I can fix this?

⟐ Commented December 25, 2025 at 8:34 MST

Sennheiser RS120: Why do they keep cutting out?

Sat, 11 Jan 2025 20:05:53 -0700

I got these headphones and they worked great except for one thing. About every 30 minutes the sound cut out and was replaced with deafening feedback noises. I can fix it by unplugging and plugging back in but it keeps happening. Please help.

⟐ Commented January 11, 2025 at 20:05 MST

Sennheiser RS120: Why doesn't my transmitter turn on?

Mon, 25 Nov 2024 21:36:27 -0700

The green transmit lite on my transmitter doesn't

come on anymore to indicate the unit is transmitting.

It isn't transmitting. All connections are ok.

Any advice??

Thanks,

Paul Hipp

paulhipp@aol.com

⟐ Answer edited November 25, 2024 at 21:36 MST

Sennheiser RS120: unable to prepare RS 120 headset for pairing. when pressing off/on

Sun, 24 Nov 2024 14:10:20 -0700

when preparing RS120 for pairing, no lights come on when pressing and holding the on/of switch for 7 seconds. Is there a reset for the head phones?

Sennheiser RS120: Sennheiser HD 201 headphones

Tue, 17 Sep 2024 09:21:30 -0700

My headphones (not wireless) have had their non removable wires broken off right at the join. I would love to be able to fix them. Can anyone help please?

⟐ Answer accepted September 17, 2024 at 9:21 MST

Sennheiser RS120: Frequently I get a very very loud static sound in my earphones

Sun, 01 Sep 2024 12:04:17 -0700

I have two headsets for the RS 120. One is fine. The other one sends a horrible loud burst of static every now and then and scares the !&&* out of me. Can anyone relate?

Can anyone advise how I could prevent this?

Thank you.

⟐ Answered September 01, 2024 at 12:04 MST

Sennheiser RS120: stopped working no sound no red light

Wed, 14 Feb 2024 23:50:24 -0700

ok - hello and how are all ?

New to this - so question

Sennheiser hdr 120 - had them about 5 years - recently replaced the batteries as thought that was the reason they were not holding the charge. But now new - already charged batteries, still no sound.

Cradle - unplugged, and same with headphones - removed batteries for the 15 min reset, plugged back in and batteries back in - still both no sound - despite tuning and volume up to wait - nothing. No red light on cradle.

I get green light on as soon as i switch plug on for power, just no red light when headphones on cradle.

Been like this for about a week - last time had to update the driver on my pc - and then it worked great until 3 days later, so could be coincidental or not. Just know its getting tedious now and the thought of replacing the whole lot is a tad of a minefield - as too much choice and prices are more now

so all or any help be good

much appreciated

⟐ Commented February 14, 2024 at 23:50 MST

Sennheiser RS120: The green led light comes on and goes out often

Sat, 26 Aug 2023 20:29:12 -0700

When the green light is on and I use the headphones they last about 10 minutes and goes out and all I get is static.

⟐ Commented August 26, 2023 at 20:29 MST

Sennheiser RS120: Replacing the volume control wheel potentiometer

Wed, 21 Dec 2022 17:05:46 -0700

I'd like to replace the volume control potentiometer in my headphones. Does anyone know the parameters of the required replacement part?

Is it 10 K-Ohm like below? Is there someone who did this successfully here?

https://www.radioshack.com/products/radi...

⟐ Commented December 21, 2022 at 17:05 MST

Sennheiser RS120: Has anyone seen a schematic for the HDR120?

Wed, 21 Dec 2022 16:41:43 -0700

I am hoping to take my broken headset and repurpose the innards as an RF receiver for standard set of headphones.

It seems like an easy build, but a schematic would simplify it.

Thanks.

⟐ Answer accepted December 21, 2022 at 16:41 MST

Sennheiser RS120: Cannot tune in …. Only get static

Fri, 25 Nov 2022 21:53:26 -0700

I have red light “charging”. Have replaced batteries, and after 36 hours, still showing as “charging”. I am get nothing but static, cannot tune into the tv.

# Should there be a green light once batteries are fully charged

What can I do to get sound from tv.

I have had the unit for nearly 3 years and it has gone perfectly well until now. Have checked all plugs etc…all seems In order. Would appreciate your help. Thank you

lorraineh13@bigpond.com

Sennheiser RS120: Getting into the Sennheiser RS-120 Charging cradle

Mon, 14 Nov 2022 17:21:35 -0700

How do you take the front plate off a Sennheiser RS-120 charging cradle? The covering on the RCA male jack wire to the cradle has decomposed and needs replacement. Easy to do if you can get inside the box. Doing so is the puzzlement.>

⟐ Commented November 14, 2022 at 17:21 MST

Sennheiser RS120: I want to replace the audio cable

Mon, 14 Nov 2022 17:15:51 -0700

The cable needs replacing and after removing the 2 inset phillips head screws I’m stumped! How do I open up the console to replace/repair the cable, which broke right at the grommet?

⟐ Commented November 14, 2022 at 17:15 MST

Sennheiser RS120: Right ear only works when volume dial is in juuuuust right place

Mon, 14 Nov 2022 04:54:09 -0700

The left ear sounds fine, so I'm confident it's not a tuning issue. But the right ear only works if the volume dial is in one VERY specific place. Which, of course means I have no control over the volume if I want to hear in both ears. If the volume dial is not in the right spot I just get static. Halp!

Any ideas?

⟐ Commented November 14, 2022 at 4:54 MST

Sennheiser RS120: No sound with fire stick

Sat, 26 Mar 2022 19:00:47 -0700

I had to connect headphones to the cable box. Cause connecting to TV the green light would go off and no sound. Connected to cable box I have sound for cable tv but no sound using the firestick.

Sennheiser RS120: Can only hear two recorded shows out of 30 from my Dish recorded shows

Sun, 05 Dec 2021 16:46:08 -0700

I have a Sennheiser RS120, I can only hear two of my “Dish” DVR recorded shows. I am using a Optical Digital Audio Cable from my TV to a Audio Extractor with RCA jacks.

I can not hear anything other then Two Dish DVR recorded shows.

I can not hear anything on NETFLIX or AMAZON PRIM.

Can you help? Thank you, William

⟐ Answered December 05, 2021 at 16:46 MST

Sennheiser RS120: Why is the headphones not charging

Sun, 05 Dec 2021 16:01:27 -0700

Have plugged the transmitter into another power point and removed the batteries for 15 mins. Assembled everything again but the green charging light is still not on. Someone please help!!!

⟐ Answered December 05, 2021 at 16:01 MST

Sennheiser RS120: How can you take the headphone apart, I need to get to the vol circuit

Sun, 05 Dec 2021 15:52:14 -0700

if i adjust the tuning or volume it is very erratic and sometimes only plays on one speaker. it looks like the potentiometer either needs cleaning or replacing but i do not know how to take it apart. please advise. is there an online service manual?

⟐ Answered December 05, 2021 at 15:52 MST

Sennheiser RS120: One headphone does not work

Wed, 07 Oct 2020 05:31:01 -0700

I only listen to the tv in mono with one headphone, not in stereo with both headphones. I already checked the electrical connection between both headphones. I changed also the battery, but still the same. Any idea what is wrong and how to fix it will be higly appreciated. Thanks

⟐ Answered October 07, 2020 at 5:31 MST