Telefunken issues

I have a telefunken radio out if a console. I do not know the model. it was working fine with a bit of hum, however when some old caps were half disconnected to read their values the radio stopped working after they were reconnected. i can hear the radio working but very faintly even if the volume is pegged. also no change after replacing most of the volume and output transformer caps. to clarify, it sounds fine except that the volume is very low with the volume knob turned all the way up.

I switched it to AM and SW and it works fine. more importantly FM works now but only in mono, when switched to stereo it becomes very quiet. i will clean the switch and update if that does not work. if anyone has any other suggestions they would be appreciated