Top 20 Sennheiser Hdr120 Hdr-120 Wireless Headphone Questions & Answers

Sennheiser Wireless Headphone HDR 120 Instruction Manual read

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See user manual page 17 and page 30 of manual. HD 450BT (sennheiser.com)

You have to wire the plug to eliminate the voltage sent by the sound card. I can't remember if it's the tip or the sleeve, so you'll have to verify with a volt meter. Use a 3 position plug to solder to the mic wires, just don't connect the wires of the mic to the one that has voltage on it

You can contact Sennheiser customer support by visiting their website and clicking on the "Get in Touch" button. You can also find an authorized Sennheiser service partner, submit a warranty or repair request, and find spare parts and accessories on their website. Alternatively, you can use the chat or form on their website to get in touch with Sennheiser customer service for all your questions about their products, repairs, spare parts, and accessories. Contact ' Sennheiser (sennheiser-hearing.com) Support - Sennheiser

yes you can buy everywhere an adapter for it

Just put your problem on social media, including the brabds abd they will answer, i know these kind of cimpanies. Moest just ignore you but hate bad publicity. ain't you have got a forum for consumerproblems?

have you checked the Tensioner Pulley? Also may be Water pump Try soap or Belt Dressing on belts n see if it stops squealing,if not most likely Tension Pulley

Hi melamon,
Check the sound setting of windows, there is nothing wrong with your headset.
What windows do you have is i XP, Vista or Windows7?
anyways it is almost all the same just looks different on the windows version.
On the lower right side look for the speaker icon in the lower right side where the time is, then right click on it then select playback devices.
Once you have playback devices you should see a headset icon there if the headset is already connected.
right click on the icon then select properties or configure headset check the settings, also check the settings of the headset for the mic to see if there is an option to disable or set anything regarding echo or quality on the mic settings

Message me if you may need more info for further troubleshooting

Yes I had the same problem. Under some circumstances the MM100 freezes (didn't figure out when just yet). It's a software issue inside. Solution: open left speaker (the side with the charge connector and hence the battery). Discharge the battery (or just short circuit for half a second) and it works again. Sennheiser should built a reset button on these things.

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Wiring a fridge thermostat typically involves connecting the thermostat to the power source and the compressor. Here's a general guide for wiring a 3-pin thermostat:

1. Identify the Pins: The thermostat will typically have three pins labeled 4, 6, and 3.
2. Connect the Power Source: Pin 4 is usually the common (C) terminal, which connects to the power source. This could be the live wire from your electrical supply.
3. Connect the Compressor: Pin 6 is often the normally open (NO) terminal, which connects to the compressor. This allows power to flow to the compressor when the temperature rises above the set threshold.
4. Ground Connection: Pin 3 is commonly the ground (GND) terminal. This should be connected to the ground wire for safety purposes.

All questions need FULL 'make model (what it is) first 3 words please. Something to do with this? The serial number should on the label on the rear by the mains cable. This is a statutory requirement unless someone removed it to hide its identity. https://www.google.com/search?q=KPG-790 ..

There are some ideas here, but also make sure Squelch isn't all the way up, that you aren't on some type of mute and that the Volume isn't at Zero. https://www.google.com/search?q=two-way+radio+transmits+but+does+not+receive https://www.google.com/search?q=KEM+P29923 ..

This question edited for clarity. Contents of correction Question added here and Deleted. Did you read the Manual? It looks like it has Volume Buttons on the side and may be set to Zero volume? https://www.motorolasolutions.com/en_us/support.html https://www.motorolasolutions.com/en_us/products/two-way-radios/analog-business-radios/portable-radios/bpr40.html#tabproductinfo ..

Usually black wires are used for chassis ground.

Question edited for clarity, add maker and toss in some CAPS. The site does not do well on abbreviations 'CPS' - Customer Programming Software? https://www.google.com/search?q=mcs2000+UHF+2+CPS https://www.google.com/search?q=Motorola+mcs2000+UHF+2+reset+button ..

See following diagram. I think it is carbon type microphone and seems same as required by you. Wire color codes are Black and Red are switch to enable audio circuitry on remote device (Push to Talk Switch, Usually in transmitters), White and Green are audio signal and shield. Print 51.TIF (2 pages) (mypicsonline.net) Roadking 5640 require dynamic type microphone. Radio Code Definitions; Specifications - ROAD KING RK5640 Owner's Manual [Page 17] ' ManualsLib