Klein & Hummel UE 400 schematics

[sonicmook56]

Hi. first post. I lurk around on this form often to collect the knowlage from all you folks. thanks..

anyways, I have a K+H UE 400 on my bench that does not pass audio. The owner pluged the unit into a power converter not knowing that it was wired for US mains.



Im feeling a bit lost inside this box without a schematic, and was thinking one of you could point me into the right direction in finding one.

 

[gyraf]

Added it to my Gyraf/resources webpage:

http://www.gyraf.dk/schematics/schematics.html

The powersupply is based on the old '723 voltage regulator controller.

Jakob E.

 

[sonicmook56]

thanks! It lives again!

 

[dirty1_1garry]

any body knows what IC’s are on schematic?

 

[dirty1_1garry]

any body knows what IC’s are on schematic?

Will answer myself)
opamps - uA709. Pretty old thing.
Pretty unstandard in our days - freqency compensation pins.
Is it right to say that if I want  replace uM709 for modern opamp in UE 400 schematic frequency compensation pins should be just ignored?

It's always interesting to get some interesting information from schematics

 

[gyraf]

NE5534 has compensation pins too..

http://www.ti.com/lit/ds/symlink/ne5534.pdf

Jakob E.