Hiya
I am repairing a Dynacord Powermate 1000-2 mixer/amp and have a question about DC blocking capacitors in the signal path.
I am getting a slowly dropping DC on the DISP1 node (output of I6AA op-amp) on switch-on. This is causing the green "signal present" LED to come on on that channel which takes about 30 seconds to turn off. It seems to be caused by a charge on C35A that dissipates slowly through R54A (1M Ohm).
It seems to me, it would have been better to put the C35A on the output of I5AA with a resistor to ground. Is there a reason why this would not work.
I have checked all relevant components and power supplies and I cannot find any faults but I'm sure this is not normal behaviour.
Any help greatly appreciated.




Üdvözlet!
Dynacord L1600-os végfok gyári (szervizkönyvi) nyugalmi áram értékét szeretném megtudni,VR1,VR2 trimmer kontakt hibája miatt.(közel 30 éves a cucc)A CNSERV 2,3 és 5,6 pontokon beállítandó mV-értéket.A rajzot megtaláltam a tanyán.
Köszönöm a segítséget!
Hi, need help get service manual for Dynacord CMS1600-3 a very wanted audio mixer in India. I don't know why company does not publish schematic diagrams of the machines. Tried all web sites, could not find anything helpful. It has smps with microprocessor, available in the market but the software is not. Effect board is also costly. I will be very much thankful to get help. Thanks again.
Sziasztok!
Szükségem lenne a dynacord gigant v kapcsolási rajzára
Szereztem egy ilyen szép példányt, de hiányzik egy bemeneti, kimeneti panel a hátuljáról. Sajnos az adatbázisban csak a gigant 1 található, ami csöves, ez pedig MJ15003-MJ15004 komplementerrel megy.
Előre is köszi