Question about Logitech S120 2 Speakers

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What is the output voltage of the transformer in the logitech s-120 black speakers

The transformer is burnt out i would like to replace it but i do not know the out put volage

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Posted on Jan 02, 2017

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SOURCE: How to disassemble Logitech Z-340 sub-woofer

The speaker bezel can be removed in only two ways:

1) Somehow remove the grille in order to get a the screws which hold the bezel onto the cabinet. I tried to do this and couldn't get it to budge. Once I got the thing open I observed that Logitech used a LOT of glue to hold this thing together.

2) Drill holes THROUGH the grill above each of the 8 screws large enough so you can loosen the screws.

Once you get it open, you'll be shocked to discover what you thought was the subwoofer cone is actually A ROUND PIECE OF CARDBOARD fastened to the foam. The 4" driver is behind this fastened to a board halfway back pointing into the chamber containing the electronics.

You can get to the power transformer, but good luck removing it. The screws are nearly impossible to unfasten; more glue but more importantly incredibly awful access to the nut and screw (yes, a screw, not a bolt).

I wouldn't pay 5 bucks for this system. Luckily, I didn't.

Posted on Feb 01, 2009

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I want t replace a mb2x40/120 rs ballast with a 120 277v electronic ballast how do i wire it


Rule #1: TURN OFF THE POWER AT THE BREAKER PANEL.
A fluorescent light ballast is a transformer that outputs a higher voltage than the input (120 volts). The electrocution hazard is very real.
Practically all ballasts have a drawing printed on the label. As a master electrician I still need the drawing to install them properly. Electronic ballasts should have a black and white wire for input voltage. The output to the lamps will be some combination of: red, yellow, blue.
The new ballast must also be matched to the type of lamp. Old fluorescent lamps were T12 (refers to the diameter). New lamps are T8 and produce more lumens with lower amperage.

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I need to replace the transformer inside my 12 volt charger. I can not find who makes the ES -66-287rev5 transformer. Need help.


If you have the skill to determine the transformer input is open, I would expect you have the skill to replace a transformer. Based on this assumption: determine the input voltage (120 vac?), determine the output voltage (14 vac?), determine the power requirements (output voltage times the charging current), find a transformer at www.digikey.com or www.mouser.com or www.newark.com.

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1 Answer

What is the output voltage of the transformer in the system, mine is burnt so i need to change the transformer so i need to know the output voltage


Nominal Output Power (Total) -- 2.3 Watt


On the back of the right speaker where the power cable is connected there is a sticker where you can see the voltage the speakers are using. You should read there 120 V - 60 Hz 100mA.

You will have to use a voltage adapter from 120v to 220v. (found in electronic shops) that maintains the Voltage stability.


Regards,
Tariq Khan

Jan 15, 2013 | Logitech Speakers. S-120

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I have a customer that recently replaced his generator, problem is , he got a 120 VAC output. He has 2 SW 4024 for 240 VAC output. Can I hookup the 120VAC to the master inverter, or should I get a...


Hello,

I will accept the second option which is getting transformer.

Go ahead and get a transformer in order to step up the voltage. This is better than hooking up the 120V AC to the master inverter.

In summary, get a transformer to step up the voltage.

I hope this is clear now....

Good luck.

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The mains transformer in my Logitech x540 has blown (oc on the primary). I've taken it out and its a simple single coil primary and secondary, but there are no markings on it to indicate the secondary...


You would need to rewind the coils.Do not try to do it by yourself if you have no idea what you are up-to...this time it was transformer next time it could it could be your circuit.Take it to a professional,the charges won't be much.
Good Luck.

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I need the input voltage for ac adapter for my GE 98903 2.1 Pro Speaker System


The AC adapter input voltage is 120 Volts AC as it plugs into a wall outlet. I suspect you want to know the output voltage of the transformer. If you have the old transformer the output voltage is listed on the transformer top. May be hard to read but it is there. This system is also sold under then brand name Jasco. The Input voltage of the system should also be printed next to the power connection or on the speaker itself.

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AC/DC Adapter
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1 Answer

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What you need is a 24 volt transformer that has a rating of at least 40VA. 120 volts is the primary and 24 volts is the secondary voltage. You should try to figure out why the transformer burnt out first.

Paolo

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3 Answers

No power in the system


Did you have to replace the fuse? Was it opened? Sometimes there is a THERMOfuse INSIDE the transformer [xfmr].Before it blows because of too much heat ,it may blow the 2a 250v external fuse.You must check the power supply [the circut attached to the fuse] input should be 120 a/c in and around [+] or [-] 12 v thru 15 v DC output. Look for filter capacitors & resistors that look like tiny cement blocks(they are thermo type fuse resistors) BE KILEFULL !!! (CAREFUL) the voltages are low but the current could be high. Could stop your heart!!

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