Re: TC Electronic Studio Konnekt 48 revival

You are right, you should get 3,3V here. Replace both C488 and C489.
Concerning Q1 on the psu i can't tell you, i never paid attention to it's temperature...

Re: TC Electronic Studio Konnekt 48 revival

Today i had time to spend on my second faulty SK48.
I checked the 3,3v rail again, but this time i set my multimeter before starting the board.
And guess what?^^ 1,7v during the first few second, then 3,29v!
I changed C489 and C488 and here we go, "TC" logo
I guess the 3,3v was too long to come and it prevented the board from booting normally. Or maybe the faulty capacitors were draining too much current to the GND.
It was quite vicious because only few seconds after powering the board the...

Re: TC Electronic Studio Konnekt 48 revival

I have a UT81B digital scope/multimeter, it is limited to 10Mhz, but i will try to check the crystal anyway.
Yes, "no boot" does means no LED animation on front panel at startup. Only the blue ring around power switch. (no led on motherbord as well)
Repairing theses SK48 was a bit a challenge for me as it is a bit beyond my skills, but it helps me to improve ;-)
Thank you again for your assistance, it is great to share your knowmedge!

Re: TC Electronic Studio Konnekt 48 revival

I changed both C489 and C488, and it works!! Thank you very much Khron!! Now i feel a bit stupid, it was easy...^^
I will now have to check all I/O sound but it should work :-)
I have a second SK48 that not boot, but all voltages are OK, spent a lot of time on it and my opinion is that the main DICE chip is dead...

Re: TC Electronic Studio Konnekt 48 revival

Hi all, i see there are specialists of the SK48 here! Would you accept to help me with my dead interface? It does not boot :-(
The main power supply seems to works fine (+14v, -14v, +7v OK) but i noticed a problem on the 3,3v: it shows 1,6v (but sometimes increases slowly few minutes after powering the board, up to 3,2v but no boot).
1,8v is provided using the 3,3v via a 1117-18 regulator (witch works well, tested)
I tested the board using external 3,3v power supply (800mAh required) and it started correctly and i...

Re: New Members - please post your introductions here

Hello everyone, i am Remi, from France (sorry for my poor English^^)!
I like DIY and electronic repair.
I already fixed many devices such as laptop computers, synths, digital audio mixers, audio interfaces, and many more... Also made several DIY projects (my favourite is the Shruhi-1 from Mutable Instruments).