SKIdaho Posted October 19, 2024 Share Posted October 19, 2024 On 5/13/2022 at 9:29 PM, JeffC said: Fixed a set of ProMedia 2.1 BT that stopped producing any stereo output. Hope this can help someone else. Klipsch Promedia 2.1 BT Amplifier Repair.pdf 1.81 MB · 332 downloads Jeff, thanks a bunch. I enjoyed your writeup. Now I'm off to get some 50V 22uF caps and try to repair. Thanks again for doing this. Quote Link to comment Share on other sites More sharing options...
SKIdaho Posted October 24, 2024 Share Posted October 24, 2024 On 10/18/2024 at 6:06 PM, SKIdaho said: Jeff, thanks a bunch. I enjoyed your writeup. Now I'm off to get some 50V 22uF caps and try to repair. Thanks again for doing this. Aargh. I went to the trouble to change the capacitor C22, and then hooked up the power supply leads backwards. Burned a trace on the board, and even when a bridge to replace the trace was installed, still didn't work. Oh well. Shouldn't have been so hasty. The blue-wire power connector goes next to the heat sink. Curses to Klipsch for putting on two pin-compatible power supply connectors. Quote Link to comment Share on other sites More sharing options...
iPankrub Posted October 27, 2024 Share Posted October 27, 2024 On 7/28/2023 at 9:41 AM, daniel86 said: Hi Jeff, my promedia 2.1 BT no power supply, and noticed the capacitor blown off , could you pleas advise whats the code for this please, appreciate. Exactly same problem here. Blown Cap and burnt relay. Got mine repaired once, blown again after 3 months. Cap is 472M 1 KV (I asked authorized dealer repairman, replaced the cap but still not working) I traced the circuit and also replaced OB2333CP, still not working. Now I suspect the ferrite core transformer as I checked there is around 290 Vdc in the primary winding but nothing came out at the secondary side. Seem to be a dead end for me as I searched label on transformer, but nothing came up on Google Quote Link to comment Share on other sites More sharing options...
ChefJ Posted October 31, 2024 Share Posted October 31, 2024 I found this thread while researching the issue with my Klipsch ProMedia Heritage 2.1 speakers. After disassembly to look for any burn marks, or cracked solders, i have not been able to identify the specific problem. The speaker system functioned very well for about a year. After that one of the speakers stopped working. Doesn't appear to be a DIM issue, or external wiring. Does anyone here have any experience or a similar fix for the Heritage system? After searching, the internals of the Heritage vs the ProMedia 2.1 are not the same, google seems to have issues locating any schematics/wiring diagrams specific to the Heritage system, and instead provides diagrams for the system referenced in this thread. Quote Link to comment Share on other sites More sharing options...
jeffw123 Posted November 13, 2024 Share Posted November 13, 2024 JeffC is the man - I added a new Nichicon 22uF 50V cap on the back side of the board for C22 - I'm back in the saddle - total kudos to JeffC for the work spent on identifying the issue - I'd buy him a drink if I could.... Quote Link to comment Share on other sites More sharing options...
Astro25 Posted January 13 Share Posted January 13 This right here just fixed mine. I just ran into this issue, sub only working, so I found this thread and just replaced my cap with a 10uf 50v cap to see if it fixed it and boom it did. So the 22uf cap has been ordered. Thank you for this fix. Quote Link to comment Share on other sites More sharing options...
n1peccadillo Posted February 2 Share Posted February 2 JeffC, you the man! C22 was definitely the culprit on my set of 2.1's as well. Thank you for the T-shooting and isolation. It is weird that my C22 was not totally sorted either, I was getting a hair over 7µF when I pulled and tested it. Makes you wonder if that C22, should have a cap with a lower ripple current than it does. Quote Link to comment Share on other sites More sharing options...
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