Re: Infinity HPS-1000 15" Powered Subwoofer Troubleshooting Help

I keep looking at the schematic (pg 30) and since I'm not getting the correct voltages across C41 and C42 then the problem must be upstream from there, right?

So if you look back a few messages where I list the readings I took you'll see that across C7 I measured -0.41vdc and across C18 I got 1.91vdc -- shouldn't both of those be 12vdc since they are directly placed across the two 12v zener diodes Z1 & Z5?

My [B][I]guess[/I][/B] is that maybe I got too much de-soldering heat around...

Re: Infinity HPS-1000 15" Powered Subwoofer Troubleshooting Help

Bud, I've looked & looked at the traces and they all appear fine to me -- no lifted pads, breaks or shorts. I pulled the 6 smaller caps back off and took a couple of photos (you can zoom to full size to see the details)...



and



The areas around the pads on the bottom of the board are starting to show some stress but that's probably because I've de-soldered/re-soldered them several times now. They all meter with conductivity/no resistance to the next...

Re: Infinity HPS-1000 15" Powered Subwoofer Troubleshooting Help

All measurements were made across the cap's leads observing correct polarity.

Re: Infinity HPS-1000 15" Powered Subwoofer Troubleshooting Help

THANKS for getting back to me... I guess I screwed something up royally so now I'm in desperation-mode pulling out what little hair I have left...

These are the voltage reading readings I'm getting (I went ahead & measured a few others as well just in case they're of interest):

[CODE]
vdc across replaced caps
------------------------
pg29 C4 = 0
pg30 C7 = -0.41
pg30 C8 = 165.22
pg30 C18 = 1.91
pg30 C41 = -0.26
pg30 C42 =...

Re: Infinity HPS-1000 15" Powered Subwoofer Troubleshooting Help

Well, I've managed to [B][I]REALLY[/I][/B] screw-up something during the full recapping because I can't get it to turn-on at all now!

I replaced all the caps with the new Nichicon ones as indicated in my previous message and for some reason the power supply isn't working correctly. I've checked, double-checked & even triple-checked and all the caps are oriented correctly and soldered well with no bridges.

I'm reading 120vac in ok, and then 165vdc across the large caps when switched-on...

Re: Infinity HPS-1000 15" Powered Subwoofer Troubleshooting Help

OK, since the problem was confirmed to be a bad cap I'm now doing a total recap using the following Nichicon parts:

[CODE]

qty desc part# device location
--- ---- ----- ---------------
1 2.2uf/400v ULD2G2R2MPD1TD ac: C2

3 2.2uf/50v UTT1H2R2MDD ps: C41, C42
la: C111

9 22uf/50v UHE1H220MDD ps: C4, C7, C18, C79
la: C6, C50, C64, C67, C68

7 22uf/35v BiPolar UES1V220MPM la: C8, C9, C12,...

Re: Infinity HPS-1000 15" Powered Subwoofer Troubleshooting Help

[B]WHOO-HOO!!! It works like a CHAMP!!![/B]

I'm not exactly sure [I]why[/I] as both of the caps I replaced measured 22.1mf/22.0mf but you can't argue with success as it's working perfectly now! (FYI, I used Nichicon PW-series caps for the replacements.)

A big [B]THANK-YOU[/B] to [B]BUDM[/B]! I definitely owe you a few beers my friend!

A few follow-up questions, if I may impose a bit further...[LIST=1][*]Would it be worthwhile to go ahead and replace...

Re: Infinity HPS-1000 15" Powered Subwoofer Troubleshooting Help



Just to clarify a bit -- you're referring to C4 on the power-supply module (pg 17) and C6 on the linear-amplifier-module (pg 23) of the "preliminary" service manual for the HPS-500 correct? (Both caps are 22uf/50v?)...

Re: Infinity HPS-1000 15" Powered Subwoofer Troubleshooting Help



Would something like this work?



This is the custom case I made to hold my little soldering station dual power supply & it's irons/tips. It mainly consists of the following toys:

[URL="http://www.amazon.com/Weller-WX2021-Solder-De-Solder-Station/dp/B005N70ZSM"]http://www.amazon.com/Weller-WX2021-Solder-De-Solder-Station/dp/B005N70ZSM[/URL]

[URL="http://www.amazon.com/Weller-52921199-Solder-Soldering-Stations/dp/B005N71RMA/ref=pd_sim_469_1?ie=UTF8&refRID=075DCNWHSZ8PPPEAXFHG"]http://www.amazon.com/Weller-52921199-Solder-Soldering-Stations/dp/B005N71RMA/ref=pd_sim_469_1?ie=UTF8&refRID=075DCNWHSZ8PPPEAXFHG[/URL]...

Re: Infinity HPS-1000 15" Powered Subwoofer Troubleshooting Help



I'm not that advanced in electronics to be of much help here, but I did manage to get a copy of the true HPS-1000 Service Manual which I uploaded to here: [URL="http://www.mediafire.com/view/whcb33kujbdbggc/Infinity_HPS-1000_Service_Manual.pdf"]http://www.mediafire.com/view/whcb33kujbdbggc/Infinity_HPS-1000_Service_Manual.pdf[/URL].

Maybe it will provide more/better information?Re: Infinity HPS-1000 15" Powered Subwoofer Troubleshooting Help


...

Re: Infinity HPS-1000 15" Powered Subwoofer Troubleshooting Help



I have no objection to replacing all the caps if that's what it takes to [I]fix[/I] the problem... I'd just like to have a opinion that it wouldn't be a wasted effort and the [I]actual[/I] problem would still be there.

As far as the "oven" thing damaging the caps that's not an issue in this design because the amp isn't sealed inside the box with no airflow as you'd find in a lot of subs. Infinity was smart enough with this model to make a sealed enclosure for the sound...

Re: Infinity HPS-1000 15" Powered Subwoofer Troubleshooting Help

I corrected the link in the 1st message to correctly point to the Service Manual page.

Here are some photos of the amplifier. (They are pretty large to show details.)






...

I've got an Infinity HPS-1000 Subwoofer that I purchased new about 12 years ago that is starting to give me some problems. I've noticed over the past few months that it's not turning itself "on" automatically like it should.

Normally, the unit provides bass sounds ranging from very-soft to room-shaking, but lately it seems to be mostly silent and only engage itself during really loud special effects. It acts like it's "automatic turn-on threshold" has climbed somehow requiring a greater input signal before it kicks-in and produces sounds. (Once it does "kick-in"...

Re: New Members - please post your introductions here

I [I]wish[/I] to say THANKS...Re: New Members - please post your introductions here

I [I]wish[/I] to say THANKS...Re: New Members - please post your introductions here

I [I]wish[/I] to say THANKS...

Re: New Members - please post your introductions here

I've found several pieces of useful information here so I with to say THANKS to all posters...