To all of you last geniuses of the analog era.
I have a Kasino Concert Guitar Head that I am trying to restore. The reverb is not working. The pan is OK everything is connected and I am able to hear the reverb output but the input is not being fed into the unit. The reverb works great if I feed it from an external device... Also the tremolo section is not working. All I get is a few db volume increase when I turn the depth potentiometer.
I got the feeling that a chip is dead or a capacitor...
Any suggestion?
The chip says 5558. Where can I find a replacement?
Any input would be greatly appreciated.