• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

Marantz 4400 - Scope turned on at first time after 8 years

Thanks Freddy
Understood yout post
Yes, I know the 4 pots on the Scope board. I tried to regulate them, but apparently it didn't fixthe problem. But I will try again
Yes, I have the service manual and the schematic. The 4400's layout is extremely complicated. It's almost impossible to read ... almost ... it takes me a while, but I get it. I've already did a complete recap 9except tuner), and change those infinite small transitors. :bowdown:
Good components are hard to find here. The C1507 I can find. Maybe I'll replace the 4.
The 2sk30 is more difficult. So, I will try to find then from a reliable source.
But, thank you very much for your help.
regards
 
Hi guys
I still can't fix the scope problem on my marantz 4400
As long as I don't fix this problem, is there any way I can use the 4400 with scope completely disconected?
I read in some forums here that the filament has a useful life (just like a tube), so I'm wondering if that would really be necessary.
Is a good idea to remove the FP02 in power supply, and move the socket behind the scope to save filaments? or unnecessary?
regards
 
You must log in or register to reply here.
Back
Top Bottom