KRELL FBP 200

[brian t]

Hi guys looking for some advice, i have a KRELL FBP 200 amp which is overheating on one channel it then cuts out on its protection system would be grateful for any advice you can give to repair it. cheers brian

 

[tiefbassuebertr]

Without schematic diagram it is nearly impossible to give you some advices. Some models use a MCU controlled VBE multiplier, so you need additional a software refresh.
Because Dan d'Agostiono now have his own company, you can ask there about the manuals instead by Krell. Perhaps he send the necessary schematic diagrams to you.
Check out the URL's in this case by post #1 about
http://www.diyaudio.com/forums/soli...ke-pure-classa-se-despite-low-idle-power.html

 

[brian t]

thanks for the reply and pictures the service manager at krell [nice chap] has advised me to change a couple of op amps to resolve problem and has sent me a full circuit diagram,excellent customer service from krell.

 

[tiefbassuebertr]

in the meantime a lot of Krell audio amplifier models listed about youtube with repair/maintenance instruction steps and good pictures of the faulty components (some examples):
Krell KSA-150 Repair and Restoration - avoid Trevor Lees Audio... - YouTube
Kosol KRELL KSA-50 Amplifier Repair and Restoration August 2011 - YouTube
Krell KSA-250 recapping - YouTube