Replacement power transformers

I would investigate what voltage the transformer connects to for primary and what voltage devices connect to secondary. Bring in a temporary power source and read the amperes it draws to operate and find the product of secondary volts and amps to select a new replacement txr

Since you state that the speaker is 5 watts, then this means that your transformer should not be more powerful than 4 Volts and 1.2 amperes.

Assuming L1 terminals are the 110 V output and L2 are the 220V output, then the theoretical 440V input current for a 100% efficient , i.e. lossless, transformer would be 17.5 amperes.if the secondaries are delivering the specified currents. More realistically the input current might be 2 to 5% higher since transformer generally run at 95 to 98% efficiency. 18.5 amperes would be an approx result.
Amps at 440 V = ((16 x 110) +(27 x 220)) /440

You need the total amperes of the refrigerator and multiply by the refrigerator volts to get voltamps, then choose a transformer that is rated at least 120% of the voltamps of the refrigerator. e.g. refrigerator runs at 120 volts and 7.5 amperes, 120 x 7.5 is 900, then 120% of 900 is 1080. A transformer of at least 1080 VA (volt amps) that is 220-240 volts primary and 120 volts secondary. 1080 volt amps is same as 1.08kva (kilo volt amps).

5 amps

there are four wires yellow is 12v black then black then red 5v black are ground

Hello, a 24 volt transformer can handle a tolerance of about 10% or just a little under. The important thing to remember about transformers is to always replace one with the same VA rating ( VOLT-AMPERE)

To convert KVA to AMPS:
Multiply KVA by 1000/voltage (KVA x 1000) / E

the current measured in ampere which depends upon the resistance . V/R=I{ohm's law} . as resistance is low , current becomes high . power supply gives that much current which circuit takes no fixed current transformer gives whatever current mentioned on the transformer .i.e., maximum current capacity of that transformer .

Contact Logitech and they will ship you one for a charge.