help with Sansui BA5000 - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 9th September 2004, 08:28 PM   #1
diyAudio Member
 
Join Date: Sep 2004
Location: detroit MI
Default help with Sansui BA5000

Hello,

I have a strange problem with a BA5000. When you initially fire up the amp the right channel functions properly but the left channel does not product sound.

If you unplug the input conectors and switch the left and right channels back and forth causing a ground "pop" the amp functions perfecly. It may stay fixed for 1/2 hour or it may be fine all day.

It seems if you keep the levels up tis will be better longer.

Any idas.

Thaknks for your input

Russ
  Reply With Quote
Old 9th September 2004, 10:12 PM   #2
diyAudio Member
 
Join Date: Jun 2004
Location: Knoxville
sounds like a loose wire or component to me. If a componant was damaged, it probably would have this problem all the time.
  Reply With Quote
Old 10th September 2004, 02:27 AM   #3
jleaman is offline jleaman  Belgium
Banned
 
Join Date: Apr 2002
Send a message via AIM to jleaman
start with pulling it apart to the rca section and resolder the rca conectors on the back maybe around the circuit boards too. : O ) got a picture too ?
  Reply With Quote
Old 10th September 2004, 03:58 AM   #4
anatech is offline anatech  Canada
diyAudio Moderator
 
anatech's Avatar
 
Join Date: Jun 2004
Location: Georgetown, On
Methinks you may have oxidized relay contacts. With any luck, not burned yet. Check by turning the unit on and tapping the speaker relay. If this is it then ....

Take the top off the relay, release the spring carefully. Remove the moving contact (attached by wires, do not detach). Get a business card and soak with contact cleaner, not tuner cleaner. Rub the contacts, both moving and stationary. Follow up with cleaner such as Electrowash 2000 (non-residue) and reassemble. If the fault is still there, replace the relay.
-Chris
  Reply With Quote
Old 10th September 2004, 04:29 PM   #5
diyAudio Member
 
Join Date: Sep 2004
Location: detroit MI
Thank you for the input. I will try those things. Are the meters before or after the output relays? The meter on the bad channel does not read. This may tie down the problem. I will let you know how the suggestions work. Keep them coming.

Thanks

Russ
  Reply With Quote
Old 10th September 2004, 08:35 PM   #6
anatech is offline anatech  Canada
diyAudio Moderator
 
anatech's Avatar
 
Join Date: Jun 2004
Location: Georgetown, On
Hi Russ,
It souds like the meters are after the output relay. I don't have the schematic so I can't say for sure.
-Chris
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
sansui R70 maxpou Solid State 2 1st November 2009 10:21 PM
FS : Sansui AU-317 Bee C. Swap Meet 1 2nd April 2009 01:08 PM
WTD ~ Sansui AU-111 TheMooN Swap Meet 2 6th March 2009 11:34 AM
Sansui AU-111 stonehome Swap Meet 1 14th June 2006 02:37 PM
Sansui Au-517&au-717 ManUtd Solid State 4 29th March 2004 01:13 AM


New To Site? Need Help?

All times are GMT. The time now is 07:42 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2