Klappt das denn in diesem Fall?
Ich hatte schon Wirewrap-Pfosten, die saßen bombenfest in der Platine...
In diesem Fall würde ich dann bevorzugen, die Drahtspirale abzuwickeln und später zu einer einfachen Schlaufe verkürzt herumzulegen + zu verlöten.
Gruß Eberhard
Dürfte klappen, die Lötstellen sehen praktikabel aus. Zu mal ich nur 5 Lötstellen trennen muss um die Vorstufe/EQ vom Netzteil zu trennen.
Werde aber wohl erst nächste Woche weiter machen können...
Hi Friedrich,
First of all greetings from Czech Republic, to you and all the members of this forum.
My name is Andrej, and i'm a big fan of vintage hi fi.
I apologize for using English, my German language is very limited .
I am currently in the process of fixing a Wega 42V amplifier with the same symptoms as yours had - the relay would not engage at the beginning.
Following your thread, I managed to make it sing again after replacing all 120 ohm resistors fuse Especially R509 and Q201 transistor on the preamplifier power supply, but I got stuck on the same problem with the quiescent current. I get ~ 8mV on left and ~ 2mv on right.
I wanted to ask you, did you manage in the end to fix this problem? And if yes, what what the solution applied?
Thank you in advance for your help!
Hello Andrej,
Welcome to our board!
I solved the mentioned problem by replacing the complete PCB, since I got my hands on a spare amp with different faults. I think the reason for the weird idle current problem have been drifting resistors , but I am not hundred percent sure, because I somewhere created a short while working on the PCB. Since I found another dead spare amp, I just solved the problem by swapping the PCB.
Did you already check the values of R414, R415, R420, R421, R464, R465, R470, R471? I would recommend checking them first. They might be the reason.
I hope it helps and feel free to keep us posted about your progress. I am very interested in your repair! The first WEGA was actually a gift for my sister and I somehow managed to get my hands on a third amp for myself. Its also not working, yet...