Hello Friends,
I would like to get advice, how can I find the problem in my Marantz.
The problem is - Front-Channel not working good. There are only very low freq. to the right speaker. not mid or high. sometimes there are but really crunchy.
I found the AMP circuit (bellow the file - page 14). I checked with my FLUK and found that both of the power transistors (the D2390 and the B1560) or acting good (voltage is ok). (BTW how is that I have 0.7 between Collector and Emitter? is it ok? it is the same in all of the channels transistors)
The truth is that I have an general electrical knowledge but I never touch in hands and never really fixed things. so I dont know what is the next step.
How can I check and find the bad part in my amp?
Thanks a lot for any help or advice, even a link to some guide will be helpful.
Best wishes,
Alon
I would like to get advice, how can I find the problem in my Marantz.
The problem is - Front-Channel not working good. There are only very low freq. to the right speaker. not mid or high. sometimes there are but really crunchy.
I found the AMP circuit (bellow the file - page 14). I checked with my FLUK and found that both of the power transistors (the D2390 and the B1560) or acting good (voltage is ok). (BTW how is that I have 0.7 between Collector and Emitter? is it ok? it is the same in all of the channels transistors)
The truth is that I have an general electrical knowledge but I never touch in hands and never really fixed things. so I dont know what is the next step.
How can I check and find the bad part in my amp?
Thanks a lot for any help or advice, even a link to some guide will be helpful.
Best wishes,
Alon