Fuse burns when switched on (RSW-12)

[leonovo]

Hello. I have a Klipsch model RSW-12
15 years. Yesterday I turned on the button, there was a bang. I checked the fuse, it turned out to be burned. I set a new one, turned on the button, and again the fuse burned out. I have little knowledge of radio engineering and tools. I ask for repair advice. Thank you.

I have a scheme, but only for the model RSW-15.

Edited August 18, 2023 by leonovo

[billybob]

Welcome! Maybe the techie's can help... bumping up!

@leonovo

[OO1]

if you have schematics for the RSW-15 ,  by all means post the PDF  files  

[leonovo]

OK

 

Klipsch RSW-15 SM.pdf

[OO1]

Tx very much 

[leonovo]

Can anybody help me?

[leonovo]

Hello.
I have a RSW-12 model.
When turned on, the fuses began to burn.
I disassembled - there is no visible damage.
Maybe someone has a scheme?
Or can someone help with advice?

[babadono]

My understanding is the electronics for either rsw-12 or rsw-15 are identical.

[babadono]

Where are you located? There is a servicer here in the U.S. that will re build your amp. You just ship the electronics. Edwards Electronics on EBay.

[leonovo]

On 9/5/2023 at 9:28 PM, babadono said:

Where are you located?

I'm from Moscow.

[leonovo]

I wanted to try renovating myself, but I have little experience.

[leonovo]

When turned on, somewhere a spark appears here.

[OO1]

•    check the solder joints   , make sure there are no cracks in the PCB  or cold solder joints  that need to be reflowed  

[leonovo]

I checked.
Now the capacitor has exploded.

[OO1]

the 4  large capacitors are due for a recap  ,  always wear  eye protection 

[babadono]

My $0.02...if you are going to replace electrolytic caps get 105 degree replacements. A few bucks more, who cares your labor is worth much more.

[leonovo]

On 9/21/2023 at 9:07 AM, OO1 said:

the 4  large capacitors are due for a recap  ,  always wear  eye protection 

Theyre all right, its not about them.

Already seems to have checked everything.

May be there are some other thoughts?

[OO1]

7 hours ago, leonovo said:

Theyre all right, its not about them.

 

did you replace  all 4 . or just the one that was damaged  

[avguytx]

Buy an external subwoofer with an amp maybe?  Buy the new version sub and hope it lasts longer?  Seems sub amps for years were built using some cheapo capacitors that had a short life span.  I went through the same things with a Sunfire HRS-12 powered sub that I've owned since 2007.  I've replaced the main filter caps and some smaller ones and it's worked fine for years now.  But, it's doing something again and I will probably send it to a tech and have him go through it.  Cheaper than buying something new that will most likely fail in a short time.  Everything is built with planned obsolescence anymore.  Especially in last 20 years.  Manufacturers literally told us that back when I was a rep for home A/V and car audio companies from 2001 till 2009 when the market went to crap.  I got out of it then.

[leonovo]

On 12/11/2023 at 6:31 PM, OO1 said:

did you replace  all 4 . or just the one that was damaged  

I have already replaced two pcs.

 

Edited December 16, 2023 by leonovo