Question about Koss KS2503 System

3 Answers

I need a replacement fuse

The geniuses who wrote the instruction manual never put the number of amps the fuse is. Its has the volts (250V) but it doesn't say the number of amps needed to power the the system. Does anyone know the number of amps needed? Thanks

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  • Johhny Yonus Sep 11, 2006

    Techman I can't find it. It only labels the voltage and the company name.

  • Anonymous Feb 19, 2008

    just recieved system from friend , no fuse in system. which amp fuse should i purchase. thank you



3 Answers

Yeah, my circuit board was fried. I had do get a new system.

Posted on Mar 01, 2008


9 amps try it out

Posted on Feb 27, 2008

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Ita on the end in small lettering on the fuse 100%.. You may need a magnifyer to see it. BUT a fusse does not blow all by its self most of the time. It will blow if there is a problem with a circuit and Will case a fire if it is replaced by a larger fude and keeps the circuit from blowing.

Posted on Sep 11, 2006

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Posted on Jan 02, 2017

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1 Answer


There are several fuses. All are 3AG size. On the Rectifier board you need:
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F4=5 Amp, 32V
F5=20 Amp, 32V
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On the solenoid driver board you need:
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I have a pair of Technics SL-1200MK@ Turntables and I blew the fuses on the curcuit boards. I'm having trouble finding a discontinued fuse. If you know anyone selling them, please post some links for...

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I think your problem is a fuse in back panel has burnt will need to replace it, Tthere are two fuses and one is easy to see and as usual the easy fuse is not the problem, the fuse you need to replace is probably the one in a black shrink rap on top left side of the panel. You will need to cut shrink rap off fuse and find wires. Next step cut and solder in new fuse. I belive the fuse used is a 5 amp 250v, I put in a 6 amp to repair.

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