Help with my Sansui G-3000

[Mark Costa]

Hello;
First of all; i buy the receiver with the left channel don't working.
I changed the transistors 15, 16, 17, 18. (not for the original). And some os others components for another same.

The problem it's: when i plug the channel transistors, the fusible blows up, and the headphone don't work.
When i put off the transistors, the fusible don't blows up and the headphone works but just the right channel.

I'm not in home right now, latter i post some photos.
Any tips?
thank you.

 

[cademan]

You really shouldn't just guess what the problem might be as it usually leads to more headaches. It certainly sounds like it could be a shorted output transistor or more, or an associated driver transistor(s). To make sure, you will need to have and know how to use a digital volt meter. I don't know your level of expertise so if you don't feel comfortable doing this yourself, then have a professional take a look at it.

I don't believe that it is a power supply issue as you say that one channel still works so I would confine my search to the one bad channel that keeps blowing its fuse. Don't keep replacing the transistors that you think are bad as they will probably just keep blowing.

 

[Mark Costa]

I have one volt meter. i'll read more the manual and see. thanks for the help.

 

[slimecity]

Suggest you move your query or request it be moved to the sansui forum - plenty of specialists there. How did you research what replacement transistors to use and did you ensure the pinout of the replacements was correct before putting them in?

 

[Mark Costa]

Yes. Not the usual for use forever, but for test works fine.
I'll ask for someone to move this post.