Hi, I have a TM16 that is SN: LLE0G1192, which I believe indicates it was manufactured in Dec 2014. I bought it used about a year ago and soon discovered Aux 3 had little to no output, so I simply didn't use that output when gigging. I finally decided to tackle the Aux 3 issue and discovered this thread. I'm glad I did!! The info here has been invaluable to me. I opened my TM16 up and found not only a bad cap (bulging) on Aux 3's output, but bulging caps on both the left and right Mains (all 4 caps). The Mains have been working ok as far as I know but I'm pretty sure it was just a matter of time before I would have had a failure and most likely at a gig! Anyway, I have new caps on order, and I've removed all the output caps for the Mains and Auxes 1 thru 6, while I wait for the new caps to come in. I have pics to post of the bad caps and PCB where they were removed from, plus pics of the display ribbon cables and Master Controller connector J1401. Disconnecting J1401 was not easy as it's been connected for 9+ years. I'm thinking that the plastic on the connector and surface mounted socket it goes into have been baked by the above average heat that the TM16 generates and they more or less fused together. I worked them apart little by little using two jeweler's screwdrivers (one on each side of the connector) and luckily nothing broke. Pulling on the wires like I saw in a You Tube video was not an option to me because the wires would not take the strain of the pulling given how tightly fused together the connector and socket had become. Anyway, that's it for now. Once I get the new caps installed, the unit put back together, fired up and checked out, I will return to post the outcome of my repair endeavor.
QSC TouchMix 16 sound problem fixed (other touchmix versions may also get this)
- Thread starter Paul Lewendon
- Start date
Great info here. Can anyone offer a link to which capacitors I should get to replace my blown ones?
https://www.digikey.com in USA (USA company in Minnesota )
https://www.digikey.ca ( if you are in Canada, a loophole to save brokerage)
Great company and prices, quick delivery, then just use the websites sorting algorithm to find the same value of the caps.
Hello Brian, apparently like many others I have low output problems, probably caused by the caps of the QSC Touchmix 16. In your message you indicate that mainboards with the number PC 610303-00 should have the poles reversed. My mainboard shows PC 610303 REV C. Would this board be OK, so replace the caps as they are now on the board?
Thank you in advance for your answer and kind regards
Hans Hulsenboom
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H, all I just found my old post von exactly one year ago.At the I got a qualified contact via the German headquarter of course see here and I sent a mixer to the European self-center in the Netherlands. Costs me around 150 Euros to fix the problem incl.delivery.
More less one year after the last problem I have the next mega issue with the TM 16. After a sudden power loss the touch display did not react anymore.
God bless that I have control with a tablet to the mixer. What a poor design. To send the mixer in Standby you can press the hardware Button but you have to confirm with the Touch Display. This makes absolutely no sense.
All this is happened before a gig. In 2 days I have the next next gig and I need a mixer. I have enough now. I think I will again fix the mixer via a service center and then try to sell it.
I'm playing music over 30 years now. I clearly have to say that this is the worst piece of gear I've ever had. It would be perfect if it would constantly work. But you can not trust this peace of gear. I'm totally disappointed.
More less one year after the last problem I have the next mega issue with the TM 16. After a sudden power loss the touch display did not react anymore.
God bless that I have control with a tablet to the mixer. What a poor design. To send the mixer in Standby you can press the hardware Button but you have to confirm with the Touch Display. This makes absolutely no sense.
All this is happened before a gig. In 2 days I have the next next gig and I need a mixer. I have enough now. I think I will again fix the mixer via a service center and then try to sell it.
I'm playing music over 30 years now. I clearly have to say that this is the worst piece of gear I've ever had. It would be perfect if it would constantly work. But you can not trust this peace of gear. I'm totally disappointed.
Pop the back off and see if the ribbon cable came unplugged. We had that happen on a few touchmix 8 units and it was a really easy fix.
Disclaimer: I probably qualify for "caveman" (as defined in #27).
My TM16 was randomly rebooting (started during a live session with 250+ audience... ouch!). I figured I would "reflow" the power connector soldering points. After doing so I could not get connector j1402 back again... Threading it through the slot was hardly possible. In fact I didn't have to disconnect it in the first place, I just did so in order to "have a closer look". Searching for a video on someone reassembling a TM16 I stumbled upon this thread...
Then reading post #10 I realized that I didn't have to go to all this trouble in the first place! It's that 6-pin connector!
While "reflowing" the power connector I did see some boiling and even splatter of flux trapped inside so maybe it wasn't completely useless.
However the reason I'm reacting here is my great surprise and disappointment... I always had the impression that this mixer had balanced outputs, and that balanced outputs would by nature eliminate problems with unintended phantom power due to a built-in transformer (similar to a ground-loop filter)... So either the TM16 does not have balanced outputs or my perception on balanced out/in is wrong... Could someone enlighten me?
My TM16 was randomly rebooting (started during a live session with 250+ audience... ouch!). I figured I would "reflow" the power connector soldering points. After doing so I could not get connector j1402 back again... Threading it through the slot was hardly possible. In fact I didn't have to disconnect it in the first place, I just did so in order to "have a closer look". Searching for a video on someone reassembling a TM16 I stumbled upon this thread...
Then reading post #10 I realized that I didn't have to go to all this trouble in the first place! It's that 6-pin connector!
While "reflowing" the power connector I did see some boiling and even splatter of flux trapped inside so maybe it wasn't completely useless.
However the reason I'm reacting here is my great surprise and disappointment... I always had the impression that this mixer had balanced outputs, and that balanced outputs would by nature eliminate problems with unintended phantom power due to a built-in transformer (similar to a ground-loop filter)... So either the TM16 does not have balanced outputs or my perception on balanced out/in is wrong... Could someone enlighten me?
Hello Guys
I will kindly ask you for help with the Main Out Smd Transistors. The Singnal has asymetric amount. So i searched the problem at the Kondensators. They are working good. ESR is in good way. The SMD Transistors Label is 'WM5 B' and he is shortened. What kind of Type should i try to exchange the damaged ? This is very less Information. If there anyone knows a good Database, let me know.
I will kindly ask you for help with the Main Out Smd Transistors. The Singnal has asymetric amount. So i searched the problem at the Kondensators. They are working good. ESR is in good way. The SMD Transistors Label is 'WM5 B' and he is shortened. What kind of Type should i try to exchange the damaged ? This is very less Information. If there anyone knows a good Database, let me know.
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Capacitors issues, looking to purchase one of these desks, if the serial number is 2022, if that safe?
I’m so appreciative of this entire string of comments. I’m not handy with electronics by any means, and understand very little - but from y’all I understood enough to know where I need to take my 16 for fixing. Moreover, in a way I’m frustrated there’s been no official release by QSC addressing this. Has it been remedied in newer models? Seems to me such a blatant error in production would justify a recall or at least an extended warranty period. At this point I have one working aux and one working main out, and running sound for my band in 3 days. Gonna have to be creative I suppose. Appreciate the information provided herein so that I may explain to a repair person exactly what I’m encountering and the proper fix. Have a great 2025!