ngen33r Posted November 23, 2019 Share Posted November 23, 2019 (edited) Hello All I have been repairing Klipsch subwoofer amps for about 15 years as a hobby. I have decided to start blogging my repairs and eventually do videos of each one. This thread is intended to be a blog and a resource for information. I will try to answer repair questions as best I can. Comments and tips are also welcome, If you do not have the experience or the tools, PLEASE do not attempt any of these repairs. You will only end up damaging the board and it will end up costing more for a tech to repair the damage. If you do not have a high quality vacuum desoldering station (Hakko or Weller) and a current limited mains supply, you should not be working on these amps. These subwoofers do not have any user serviceable parts inside. If you open up the sub or attempt any repair you see in this thread, you are doing so at your own risk!!! Wayne Edited November 23, 2019 by ngen33r 1 Quote Link to comment Share on other sites More sharing options...
ngen33r Posted November 23, 2019 Author Share Posted November 23, 2019 (edited) RT-12 Plate serial number B207010042 This amp was having a power supply issue. I was not getting main power out or either rail on the op amps. This moves the problem to the primary side of the transformer. The fuse was not blowing, but the supply would not come on. After inspection I found that burnt glue was causing a short between R5 and the PCB. I used my hot air station to soften the glue and remove it and once removed, I replaced all of the caps on the board. I generally only use Nichicon 2000hr+ caps. This was one of the easier repairs on this model aside from removing all the bad glue. ALWAYS REMEMBER TO UNPLUG OR SWITCH OFF YOUR AMPS. CAPACITORS HAVE A LIFESPAN AND WHEN POWER IS APPLIED THE CLOCK IS TICKING. THE AUTO ON/OFF FUNCTION DOES NOT PREVENT THIS ON MOST MODELS!!!!!!! Edited November 25, 2019 by ngen33r 2 Quote Link to comment Share on other sites More sharing options...
ngen33r Posted November 25, 2019 Author Share Posted November 25, 2019 RT-12 Plate serial number 06440047 This amp was not getting any power on the secondary side of the transformer. A know weak point is the controller board 660045-1 failing. This was not The case with this amp. Pin 2 connects to the power supply that is on the board. This pin had voltage, but also a lot of noise. This noise will not let the supply start or properly regulate. The only way to see this is to look at pin 2 with a scope Pin 3 is the common and connects to the negative side of the rectifier. Pin 6 will have over 300V present. If you are poking around and slip, you will do some damage or worse shock yourself. The noise points to a bad capacitor, which is the only thing that pin 2 connects to. Replacing this cap brings the supply back to life. The whole supply will be recapped and it should be good to go. 1 Quote Link to comment Share on other sites More sharing options...
ngen33r Posted December 23, 2019 Author Share Posted December 23, 2019 (edited) RT10BK PLATE SERIAL NUMBER 06270328 This amp was not getting power. The supply control module failed and needed to be rebuilt. I rebuilt the control board and did a full recap on the amp. Now, good as new. Edited January 7, 2020 by ngen33r Quote Link to comment Share on other sites More sharing options...
ngen33r Posted December 23, 2019 Author Share Posted December 23, 2019 RT10CH PLATE SERIAL NUMBER 06240152 This amp also suffered from a damaged power supply control board and needed to be rebuilt. Once complete, a full recap and it successfully cooked my 10in test woofer. Note to self lower the volume level before connecting an input signal. Some people have their settings way too high!!! 2 Quote Link to comment Share on other sites More sharing options...
ngen33r Posted January 2, 2020 Author Share Posted January 2, 2020 RT10BK Plate serial number A906270037 This amp had a short on the secondary side of the power supply. I had to remove all the glue and replace a ceramic cap. I also did a full recap. Quote Link to comment Share on other sites More sharing options...
ngen33r Posted January 2, 2020 Author Share Posted January 2, 2020 RT12BK Plate serial number B206340078 This amp had some board damage from burnt traces. I repaired the traces and did a full recap after removing all the glue and it is back in service. 1 Quote Link to comment Share on other sites More sharing options...
ngen33r Posted January 24, 2020 Author Share Posted January 24, 2020 RT10 Plate serial number A908400036 This amp has some nice browning glue causing all sorts of havoc on the power supply. The glue all has to be removed and the whole amp needed to be rebuilt and recapped. Quote Link to comment Share on other sites More sharing options...
ngen33r Posted March 13, 2020 Author Share Posted March 13, 2020 (edited) RT?? Here is another that I am working on. It really sucks to see work that is this bad. I had to replace 20 thru holes on this power supply section, because whoever attempted the first repair didn't have the proper tools. $3 a thru hole starts to add up. I am about 40% through this one so more to come. BEFORE AFTER Edited March 13, 2020 by ngen33r 1 Quote Link to comment Share on other sites More sharing options...
ngen33r Posted April 12, 2020 Author Share Posted April 12, 2020 Well it is time for new control boards. Some of these 660045-1 boards are too far gone to repair. Here is my prototype that I am ordering to try out. I rolled my own layout on the board to reduce traces going under parts. More to come when boards arrive. 1 Quote Link to comment Share on other sites More sharing options...
Dejan Posted April 18, 2020 Share Posted April 18, 2020 Hi Wayne i have a similar amp that is popping fuse on my rt-10d. Are you able and willing to Help with the troubleshooting? I have the board out of the the sub Quote Link to comment Share on other sites More sharing options...
ngen33r Posted April 28, 2020 Author Share Posted April 28, 2020 On 4/18/2020 at 10:41 AM, Dejan said: Hi Wayne i have a similar amp that is popping fuse on my rt-10d. Are you able and willing to Help with the troubleshooting? I have the board out of the the sub I can try, but it will be like a blind man throwing darts. Quote Link to comment Share on other sites More sharing options...
ngen33r Posted May 12, 2020 Author Share Posted May 12, 2020 I have received some messages about the control board, so I will share this with everyone. This has all of the unmarked component values on the control board. 1 Quote Link to comment Share on other sites More sharing options...
ngen33r Posted June 28, 2020 Author Share Posted June 28, 2020 Finally got around to assembling one of these boards and testing. Worked great the first time so I will post the schematic for some of you. I am currently on summer break from repairs so my posts will be less frequent. Quote Link to comment Share on other sites More sharing options...
Tommy L Newton Posted August 27, 2020 Share Posted August 27, 2020 I have one of these in need of repair. Would you be interested in doing that for me? It has no power and the fuse is good. Quote Link to comment Share on other sites More sharing options...
ngen33r Posted September 4, 2020 Author Share Posted September 4, 2020 Can anyone get me a closeup of the resistors on the vertical amp board. R102 R103 R104 R105. I have a board with these failed and they are burnt to a crisp and I can't identify them. Quote Link to comment Share on other sites More sharing options...
Dale_128 Posted September 16, 2020 Share Posted September 16, 2020 ngen33r, I have a Klipsch Sub 10 needs amp repaired. What are your prices? Where are you located? Do you have a website or how can I contact you Direct. Quote Link to comment Share on other sites More sharing options...
Tommy L Newton Posted September 19, 2020 Share Posted September 19, 2020 (edited) Is this what you needed? That’s about the best I can get. If you want me to ship this board to you, I can along with the ps board that I’ve got that won’t power up (as long as you let me pay you for it). Tommy. Edited September 20, 2020 by Tommy L Newton Quote Link to comment Share on other sites More sharing options...
Tommy L Newton Posted September 19, 2020 Share Posted September 19, 2020 Quote Link to comment Share on other sites More sharing options...
ngen33r Posted September 21, 2020 Author Share Posted September 21, 2020 Tommy, I need the big pink ones that are on the board that is standing up on the triangular shaped plate. If you want to send it out for science and the good of the repair community, PM me. Quote Link to comment Share on other sites More sharing options...
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