Sansui Audio Players & Recorders - Page 6 - Recent Questions, Troubleshooting & Support

most multimeters today have transistor testing functions and plugs. use one

Look for a bad fuse on the chassis main board.

When you need to replace the output transistors, do them both at the same time with a matched pair. That way you won't unbalance the power supply and will be assured of the same power out is available on both channels.

http://www.hifiengine.com/manual_library/sansui/g-6700.shtml check the link to the service manual

So you're saying ac doesn't get very far into the unit. THAT should be easy to diagnose with CARE since ac is usually passed unmodified to the fuses and power supplies, maybe through a relay. Get a digital voltmeter and find out where it disappears after getting into the unit.

Did you check to see if the subwoofer is receiving a signal? If signal is there could be the electronics are ng.

If you still do not get the schematic, please provide your email. I will send you for free.

Your filter capacitors in the power supply section are to blame and they need to be replaced.

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/ Type in the brand name of your device, in the search box [at the top right] of the display window and the Search will start at once as you type in, and will show you all the related posts. It will make surf easy.

Let me guess...you took it somewhere for repair, and they told you it had a bad transformer and they couldn't fix it (after they took your money). Sansui began life as a transformer company, and unless something really silly was done (like replacing the stock fuse, which is probably 3 or 4A with a 15A fuse of something). I might mention that 'some' units sold for various locations have a thermal fuse installed internally to the transformer. I dunno if your model has this or not. I mention all of this because often times the phrase 'it has a bad transformer' is lame techspeak for 'I don't wanna fool with this thing'. If it blows the mains fuse on power up, then the most likely fault is that it has blown power transistors at the output of the amplifier. If it 'really' has an open primary winding in the power transformer, then it may well have a thermal fuse that has opened. Gary Brown in Orono, ME has fixed a few transformers for me with this issue. Google can help you find him.

Digikey.com

Hi i know this is off the topic but,do you have a remote for your reciever if possible will you upload a picture and model number of the remote please

If the fuse was blown on the 220-250 V side, I am assuming that you are in the UK, if you aren't , but are in the US, change the power setting dial/switch on the back to 100-120v and you might be good to go. Also, I know this may sound silly, but make sure that the speaker selector switch is pressed in or set to a speaker set ( A or B). Love the Sansui gear, have many complete systems myself!