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Marantz 2325 amp diodes

blhagstrom

blhagstrom

Mad Scientist, fixer.
Subscriber
SO, my beloved 2325 blew a set of outputs a while ago.
Tried to find all the AK threads and read them while I worked on it.

Long story so far but I have diodes from J702/J708 to R749/R750 that are not on the schematic. I thought they were the VD1122 that should be replaced. Nope.

What are they? (lthey look like glass diodes but ?)
 
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Those are fly back diodes to prevent output transistor destruction.
Read post 17 here. Don't miss EchoWars post down the page a bit.
The diodes you may want to replace are H718 and H719, VD1122.
These can be replaced with 1S1555 or 1N4448 types.

Tom
 
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