Mickstafa Posted June 29, 2006 Share Posted June 29, 2006 Hello all, Last week I discovered my 4.1s weren't working (no sound, LED not lighting up). After scouring the forums and calling Klipcsh a few times, I found that the 3 main causes are: 1) Bad Fuse 2) R26 dead 3) R12 dead So, I did the following: 1) Although the fuse was still in tact, I replaced it anyhow. I plug in the sub, and I can hear the high-pitched "power" sound, the multimeter shows the fuse is working, and the resistors are hot. Ok it is not the fuse. 2) After going to several electronic stores that did not carry 56K 1 watt resistors, I ordered some off Ebay. Per the advice of this board, today I replaced the R26 with the 56K 1 watt resistor, even though the old one read ~50-51K. Still nothing. Ok it is not R26 3) I have not replaced R12, but I am getting a reading of around 625 (resistor still on the board), so I presume R12 is in good working condition. Is this safe to assume? After talking to Klipsch support, they wondered if the cable running from the control pod to the sub was broken. Well I tested each pin and every pin works. There is no power coming from the sub. The only thing I couldn't really test today was whatever is under that big metal encasing along the bottom of the sub (it connects to the satellites and the control pod). Does anyone have any suggestions on what to test next? Craftsmen, you seem pretty on top of things here, do you have any idea what to try next? Thanks! Quote Link to comment Share on other sites More sharing options...
craftsman Posted July 1, 2006 Share Posted July 1, 2006 Hi Mickstafa, I'm sorry to hear about your issue. I too have a very similar issue with my 4.1s - what you are describing is almost exactly what I have (except that I replaced R12). You have to remember that I replaced the components before anything happened. On my unit, the +/- voltage coming out of the board has issues, if I connect the white ribbon cables (one of them is input and the other is output) the power coming into the regulators goes close to zero - which tells me that there is short somewhere. I replaced the regulators and the same problem exist. Unfortunately, I don't have enough time right now to address the issue. What I ended up doing was finding a used PM5.1 sub on Ebay and connecting my sats to it. Works fine. Quote Link to comment Share on other sites More sharing options...
Mickstafa Posted July 2, 2006 Author Share Posted July 2, 2006 Hey Craftsmen, thanks for the response. Ok, so the sats work on a 5.1 sub... hmm.. Besides downgrading to a 2.1 sub, is there any other sub these satalites would work with? Does it need to be a klipsch sub? Quote Link to comment Share on other sites More sharing options...
craftsman Posted July 2, 2006 Share Posted July 2, 2006 The sats are basically an inexpensive speaker system. They will work on the majority of amps and subwoofer systems that are rated for an 8 ohm load. You can if you want get an cheap 5.1 amp and connect the sats to it... Quote Link to comment Share on other sites More sharing options...
Mickstafa Posted July 2, 2006 Author Share Posted July 2, 2006 Sorry to sound like a newb, but do you have any recommendations for an amp/sub? I really don't want to spend another 300 or so on a new pair of klipsh's right now.... Quote Link to comment Share on other sites More sharing options...
craftsman Posted July 3, 2006 Share Posted July 3, 2006 Almost any 5.1 amp will do - it will depend on the feature set you want. If you want to go cheap, I would recommend that you check out the local pawn shop as 5.1 amps (or receivers) have been around for years. As for the sub, the same advice goes. Think of it as shopping for a cheap home theatre rather than computer speakers. Quote Link to comment Share on other sites More sharing options...
didyman Posted July 6, 2006 Share Posted July 6, 2006 Mickstafa, the power supply, wich fails to output voltages when any kind of load appears, mostly means these reasons: -The power supply's primary side has a defected puffer capacitor, wich leads to primary voltage drop down rapidly to a level that the PWM controller of the PSU fails to working. -The primary switching transistor(s) has problem, one of the half bridge is not functional correctly -One working resistor of the primary swithces died or changed value due to wear. -The feedback of the psu is broken up, or incomplete -Secunder electrolythic capacitor(s) failing -Secunder rectifier(s) failing -High frequency decoupling capacitor is broken If You have knowledge to measure them, try the high current active devices first and their immediate vicinity and go for caps after them. Quote Link to comment Share on other sites More sharing options...
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