My subwoofer PSW125 does not power up

Jimmi328

My subwoofer PSW125 worked well for a few years, then no use for a few months, and now it will not power up. I checked the fuse and it was blown. The inscription on the original fuse (hard to read) is "1.6AL 250VP". I'm assuming this means 1.6 AMPS and 250 Volts. The closest two fuses I was able to find locally has an inscription that states "1A 250 V" and "2A 250 V". I tried both and the power indicator light did not come on. I hooked up my subwoofer anyway to my computer but no sound.

I considered replacing the circuit panel in the back of the subwoofer. I called Polk; this panel would cost me $150. Still, I could not be sure if this circuit panel is the problem.

Any suggestions please?

SeleniumFalcon

In all likelihood the problem is the bass amplifier. When you replaced the fuse did it blow again? The only other component is the woofer itself and you could test it by completely removing the bass amplifier and disconnect the red and black wires that run to the woofer at the amplifier. Then at a very low volume try touching a pair of speaker wires to the red/black wires to the woofer. The woofer should produce sound when powered directly from your amp.

Jimmi328

The fuse I put in there "did not" blow again. When you say "bass amplifier", is this what I referred to as the "circuit panel"?

SeleniumFalcon

Yes, the amplifier that powers the woofer.

treitz3

Or, a commonly used term for it would be the plate amp...

BTW, you can use the 1A fuse but I do NOT recommend using the 2A fuse. Bad juju can happen if you do and that fuse may render catastrophic and irreparable damage to the plate amp. You can always order a 1.6A/250v fuse online for chump change.

Tom

rooftop59

Jimmi328 wrote: »

The fuse I put in there "did not" blow again. When you say "bass amplifier", is this what I referred to as the "circuit panel"?

It’s not worth repairing, sorry. Unless you are going to replace the driver and the plate amp. Parts express is a good place to look. These should fit with a little missing and be a huge improvement:

https://www.parts-express.com/Dayton-Audio-SPA250-250-Watt-Subwoofer-Amplifier-300-803?gclid=Cj0KCQjwsdiTBhD5ARIsAIpW8CKAUbnZjQoPpeGyiaZHjalhJ5Au0LH261iMBSaLKFlMfjUFZY5hQvEaAtkiEALw_wcB

And if you want to replace the driver while your at it:

https://www.parts-express.com/Dayton-Audio-RSS315HO-4-12-Reference-Series-HO-Subwoofer-4-Ohm-295-466?gclid=Cj0KCQjwsdiTBhD5ARIsAIpW8CJ-HUtSseIlkf6uPCSkRg0roLC6Ed1gzDKiIkZh6NY__bA7hHrd-XAaApTjEALw_wcB

Or at that point just save your pennies for this:

https://www.monoprice.com/product?p_id=42843&gclid=Cj0KCQjwsdiTBhD5ARIsAIpW8CLtSK6jPQdSbUIjh20ry5M72jsDt0FbGuvxnZZm7HqemdFfMc8y_uMaAkh5EALw_wcB