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Re: Polk Audio PSW202
First you have to check any short circut , that may be inside of sub woofer unit .
find and sove any short circutry and then only replace the fuse with same rating.
and before you switch on it once again recheck any meterial shored with electronics pcb.
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Please open the top tray and look near to the area of the Main transformer. you will have to find it located beneath the side.
The speaker fuse also can seen here.
Use a multimeter to trace, possible to test the standy by transformer which may not have a fuse. Unless the standby works the main power will not be switched on. so check this out. Good day
Any internal slow-blow fuse can be replaced with one of the correct value. Fuses do seem to have a finite life, so occasionally you can just replace the blown fuse with an identical one and all will be well. However, fuses are protection devices , and it's more likely that you have a short circuit or defective component in your VS3251 that's causing it to draw too much current , and the internal fuse is blowing to prevent further damage. ie the fuse blowing is the symptom not the problem. Never replace fuses with ones of a higher current rating. Slow-blow fuses have the suffix T (for "Time Delay", and normal ones have F ( for "Fast"). With the street price of the VS3251 , a commercial repair is uneconomical