Hi everybody :
this is my first post and this is my first project .my Calreq EQ dos not work and I need your help.
I am completely novice in electronics and if I ask some simple questions, it is because of that and thank you to all of you.
also my English is not good and I am sorry about that, I am trying to improve it.
ok, at first I should said that the problem is when I push the bypass button to activating EQ , I dont have any sound and I only have some kind of noise like woooooooo!!!!!
I dont know I should start finding mistakes from where !!!I checked all part of PCB and I found 3 extra shorts connections and I fixed them but it is steel has the WOWWW sound instead of music.
please tell me, what can I do for finding problems ??any voltage measurement ??where?? testing resistors, Caps and ICs ???is it possible to say voltage of every pin of ICs and I check it to know that witch part has problem??
I made power supply board with 7918 and 7818 and in my output of power supply, I have 17.5 DC voltage .has it any problem or it is ok??