Schematics for Krell KSA200S

[Rainer Weber]

Hello everybody,
has someone the schematics of this Krell amp. (or similar)
Im interested who the different bias level is working in detail.
regards
Rainer

 

[ricbed]

Hi I am looking for the Krell Ksa200S schematics, I have a rare problem, driver transistors are hot very quickly and relays in both channels are sounding click and click.

Any help will be apreciate.

Thanks

 

[computerwala]

Sounds like you have have a thermal overload / DC voltage on output issue. You need to check all the Power transistors and also reseat them on the Heat sink with new washers. The old washers become brittle after 20+ years of use. You can also measure the DC on the Output Relay to see if the clicking happens when the offset voltage reaches a certain limit.

 

[AudioSan]

i have the service manual with schematic for Ksa200B
send me PM with mail.

 

[Dr.H]

the ksa200S and ksa200B are two very different amplifiers...
the s used sliding bias while the b was a simple class A design

 

[CarCar]

Hi ,Sorry my english, I Had krell amplifier, bias is very high, need schematics for fix it,
my Email is ccarrascal@hotmail.com
Thanks