Service manual for Kenwood KAC-1023

[sdoom]

Does anyone have a KAC-1023 Service manual ?
Thx ,

sdoom

[i-b-z]

Vielleich hier:
http://www.eserviceinfo.com/index.php

dort nach KAC suchen, oder Kenwood
der DL-Linl ist etwas versteckt, aber die Seite ist gut bestückt

[ppia600]

Very nice amp, hope you get it running well

[sdoom]

Yes got the baby running again

defective parts:

-flat cable (connecting the small low pass filter sub board to the main board)
-both protection relays fried internally
- 3 small thinn lines on the RCA / preamp board broken
-4 large DC/DC capacitors out off tolerance (~4300µF instead of 5600µF)
- 2 small capacitors leaking (could smell the bad stuff during resoldering)
and as always a large number of "cold" solder joints


Way of fixing.

- Resoldered all boards (power parts were resoldered using "silver" tin-solder (has a higher solder temp)
- checked major caps with a cap. meter
- followed the input signal (sine generator) through all sections finding the broken curcuit lines and the faulty relays and that damn flat cable.

I guess the amp gets too hot inside for some parts although the amp has two small fans.

[Gizmotech]

The best stereo in my opinion