Harman Kardon HK680 blowing fuses

[hifisucks]

Hello, first please dont hit me...
While adjusting the TM404 idle current with my multimeter I slipped off and touched a jumper JP439... the jumper has a mark and some black stuff around... F4 and F5 blown...
Worst of all is that F4 and F5 is now always blowing...
No idle current at all... :-(
Does somebody know what I grilled? Maybe a transister?
Last time I did this free hand... without clamps...

 

[JonSnell Electronic]

Unfortunately you are going to have to test all of the output/driver and pre driver semiconductors on the affected channel before going any further.
Then, check/replace all components that have a safety triangle logo next to them in the schematics.
HARMAN-KARDON HK-680 SM Service Manual download, schematics, eeprom, repair info for electronics experts

 

[hifisucks]

Thanks for the quick answer... But I'm afraid, I cannot manage these things...
Well, atleast I will think it over...
Thanks again and all the best!