Difficulty

Easy

Steps

3

Time Required

                          5 minutes

Sections

1

  • creative ac adapter model maf115160th
  • 3 steps

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Introduction

often just the internal thermal fuse is blown

open the housing, solder a new thermal fuse (or just a “bridge” -if no fuse at hand for the moment…), close the housing… done!

remarks:

the original thermal fuse is situated IN the primary circuit where in case of over-current the heat-development is maximal, thus it switches well-

our (possible) replacement is AT the primary circuit (at best!) and wont get the same heat, while IN the circuit the heat-development may be (already) higher so the use of a thermal fuse with a lower rating (85 degrees) is recommended -with the clear disadvantage that it could switch off TOO early, in normal use but eg under higher ambient-temps or bad venting.. could mean you have to replace it again… -possibly the rating of the substitute can thus be higher…. that depends on your specific situation and use -find out-

me, i even leaved the thermal fuse and just soldered a “brigde”… but in case of emergency this could even lead to a burning device!!! so i wont recommend this to the public

p.s. the reason why my ac-adapter initially blew up:

had attached it to a wrong device that awaited DC-current -with a protection diode towards ground in the input- that resulted in short-circuit-current-drain in one half-wave… became quit hot and …dead…

Warning: Using this guide may expose you to voltage. Exercise extreme caution when following this guide.

What you need

Step 1

              panel
  • panel view

panel view

1024

Step 2

              inside view
  • solder the new thermal fuse (or bridge) between the left and the middle contact (in the picture there is just a bridge -above the red tape-… (had no thermal fuse at hand at first…)

solder the new thermal fuse (or bridge) between the left and the middle contact (in the picture there is just a bridge -above the red tape-… (had no thermal fuse at hand at first…)

Step 3

  • found one 85c in a used li-ion-pack… be VERY careful when soldering NOT to exceed the max. temp meanwhile— suggest to put a final layer of tape around to get better contact to the coil -where the heat is coming from in case of overload-

found one 85c in a used li-ion-pack… be VERY careful when soldering NOT to exceed the max. temp meanwhile— suggest to put a final layer of tape around to get better contact to the coil -where the heat is coming from in case of overload-

close the lid and add eg thermo-glue or just use the soldering-iron and make the housing melt along the pits

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                                                                                      5 other people completed this guide.

Author

                                      with 2 other contributors 


                    biopilz

Member since: 03/08/2017

384 Reputation

                                      2 Guides authored                  



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Sakhile Lloyd - May 21, 2020

Reply

My A300 speaker adapters has blown I need to get a new one

Tien - Dec 10, 2021

Reply

Can you show me of this Adapter diagram. The middle line in primary is broken but i don’t know how to connect to which leg

Can I use the lead line instead of fuse to connected